CN212482974U

CN212482974U - Passive sampler and suspension bracket device for free dissolved organic pollutants in water body

Info

Publication number: CN212482974U
Application number: CN201922405000.0U
Authority: CN
Inventors: 尤进茂; 劳文剑; 宋翠华; 王博
Original assignee: Qufu Normal University
Current assignee: Qufu Normal University
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-02-05
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a passive sample thief and suspension support device for free dissolved state organic pollutant in water, include thin film piece (1) of placing in the water, set up to hookup and be used for forming thin film piece (1) frame (2) that are in different shape states with thin film piece (1), owing to designed thin film piece (1) and frame (2), through thin film piece (1), the sampling to free dissolved state organic pollutant in the water has been realized, through frame (2), the definition that thin film piece (1) is in the distribution state along the rivers direction has been realized, consequently, the sampling efficiency to free dissolved state organic pollutant in the water has been improved, reproducibility and stability.

Description

Passive sampler and suspension bracket device for free dissolved organic pollutants in water body

Technical Field

The utility model relates to a passive sample thief and suspension support device, especially a passive sample thief and suspension support device that is arranged in water free dissolved state organic pollutant.

Background

Due to human production and living activities, more and more pollutants of various types are emitted into the environment. Water is an important transport and occurrence medium for pollutants. As pollutants migrate, especially into large bodies of water, such as large lakes and oceans, the concentration of pollutants becomes lower and lower. It becomes increasingly difficult to detect ultra-low concentrations of contaminants, typically by taking small amounts of water (e.g., 1 to 5 liters) and then performing liquid-liquid extraction or solid phase extraction. And the result is only the instantaneous concentration of the contaminant at the time of sampling, and is not representative of the time-varying nature of the contaminant,

increasing the sampling density appears to solve some of the problems if one knows the average concentration level of the contaminant over a period of time (i.e., time-weighted average concentration). However, this is accompanied by a considerable increase in the overall monitoring effort and it is difficult to ensure the level and quality of detection of ultra-low concentrations of contaminants. Furthermore, only the absorption of the contaminant by the organism can have a negative effect on the organism, which in turn can lead to toxicity. This concentration is called bioavailable concentration or free dissolved concentration. The general method allows the detection of both the total concentration of contaminants and the dissolved concentration. These concentrations do not represent bioavailable concentrations. And the bioavailable concentration will be lower, detection will be more difficult,

organic contaminants are an important class of contaminants one is facing. It is desirable to measure their ultra-low concentration, time-weighted average concentration, and free-solution concentration. These problems are currently solved using passive sampling techniques. For Polar Organic contaminants, there have been devices and methods of Polar Organic Compound Integrated Samplers (POCIS), Chemical concentrators (Chemcather), and recently developed polymethylmethacrylate films (Poly (methyl methacrylate) (PMMA)). For non-polar organic contaminants, there have been Solid Phase Microextraction (SPME) methods of polysiloxane coating, semi-permeable Membrane passive Sampler (SPMD), and Low density Polyethylene (PE) film, Silicone Rubber (SR) film, polyoxymethylene (pom) film, and the like, which have appeared later.

For a passive sampler of a thin film type, a target compound enters the inside of a film through distribution to achieve the purpose of enrichment, and the current research still mainly focuses on characterization and correction of non-equilibrium concentration, comparison among samplers, toxicological interpretation of free dissolved state concentration and the like, and does not pay much attention to hydrodynamic conditions, configuration, application mode and the like which affect sampling efficiency, reproducibility, stability and the like of the sampler, so that the practical application of the passive sampler is limited.

The technical solution of the present invention is made based on the technical problems, technical features and technical effects of the applicant in the technical background.

Disclosure of Invention

The object of the utility model is a passive sampler for free dissolved organic pollutants in water,

the object of the utility model is a suspension bracket device for free dissolved organic pollutants in water.

In order to overcome the technical defect, the utility model aims at providing a passive sample thief and suspension support device for free dissolved state organic pollutant in the water, consequently improved sampling efficiency, reproducibility and stability to free dissolved state organic pollutant in the water.

In order to achieve the purpose, the utility model adopts the technical proposal that: a passive sampler for free dissolved organic pollutants in a water body comprises a thin film sheet placed in the water body and a frame which is arranged to be connected with the thin film sheet and used for forming the thin film sheet in different shapes.

Due to the design of the thin film sheet and the frame, the sampling of the free dissolved organic pollutants in the water body is realized through the thin film sheet, and the definition that the thin film sheet is in a distribution state along the water flow direction is realized through the frame, so that the sampling efficiency, the reproducibility and the stability of the free dissolved organic pollutants in the water body are improved.

The utility model discloses a, according to defining the mode that is in sampling state along the rivers direction to interconnect film piece and frame.

The utility model relates to a, film piece and frame set up to be the tubulose body and distribute.

The utility model relates to a, the film piece sets up on the frame.

The utility model relates to a, the film piece sets up to rectangle bar and the inner end terminal surface portion of film piece sets up to be connected with the frame.

The utility model designs a, film width W sets up to W = K X L, wherein L = (R X ν)/U, R is the kinematic viscosity (unit m) of reynolds number (dimensionless), ν for water²And U is the flow rate of water (in m/s), and the expansion correction coefficient K is set to 0.1 to 100.

The utility model designs, when R =45000, ν =1.0 × 10^-6 m²And/s, U =0.3 m/s and L =0.15 m, wherein W is set to be 0.015 m-1.5 m according to an expansion correction coefficient of 0.1-10, so as to ensure that the sampler can keep high sampling efficiency, repeatability and stability under different water flow rates.

The utility model relates to a, the film piece sets up to the foundation membrane.

The utility model relates to a, the thickness of film piece sets up to 5-1000 microns.

The utility model discloses a, the frame sets up to including main frame portion, go up couple portion and couple portion down and go up the inner end of couple portion and the inner end of couple portion down and set up respectively into the peripheral outside portion hookup with main frame portion, and main frame portion sets up to couple and go up couple portion and couple portion down and set up respectively into the rod-shaped body that has the ring with the film piece hookup.

The utility model discloses a, the contour line of main frame portion sets up to sharp, open-ended curve, closed curve, polygonal line or these one kind or multiple combination line in the line segment.

The utility model discloses a, the outline line of main frame portion sets up to circular, triangle-shaped or quadrangle and the peripheral end terminal surface portion of main frame portion sets up to the inner end terminal surface portion hookup with the film piece, and main frame portion sets up to be the tube-shaped body with the film piece and distributes.

The utility model discloses a, frame and film piece set up to distribute according to the mode of single end hookup.

The utility model discloses a, a suspension support device that is arranged in freely dissolving attitude organic pollutant in water includes floater, hawser, bobbin, bracing piece, rotatory couple, anchor block and snak link and is provided with the hawser between floater and anchor block, is provided with the snak link between bobbin and hawser and is provided with the bracing piece between rotatory couple and bobbin.

The utility model relates to a, the lower end ring of floater is arranged to be connected with the mooring rope.

The utility model relates to a, the hawser sets up to weaving rope form and the top end of hawser sets up to hookup with the floater, and the lower extreme of hawser sets up to hookup with the anchor block and the hawser sets up to hookup with the snak link.

The utility model relates to an anchor block sets up to the iron chain and anchor block sets up to hookup with the hawser.

The utility model designs a, the snak link sets up to be coupleed and the snak link sets up to be coupleed with the bobbin through the chain link.

The utility model discloses a, the bobbin sets up to the siphonozooid and the side portion of bobbin sets up respectively to be linked with the bracing piece, through link chain and snak link.

The utility model relates to a, the bracing piece sets up to circular rod-shaped body and the inner end of bracing piece sets up to hookup with the bobbin, the outer end of bracing piece sets up to hookup with rotatory couple.

The utility model discloses a, rotatory couple's end sets up to hookup with the bracing piece and rotatory couple sets up to hookup formula hookup with last couple portion and lower couple portion.

The utility model discloses a, two bracing pieces, two rotatory couples of individual and a passive sample thief body set up to constitute a set of swing sampling part and multiunit swing sampling part sets up on the bobbin, and a bobbin, two snacks and at least a set of swing sampling part set up to constitute a set of water layer sampling part and multiunit water layer sampling part sets up on the hawser.

The technical effects of the utility model reside in that: the pretreated film is cut into a strip shape, the film is a low-density polyethylene film, the thickness of the film is 25 microns, and the width (w) of the strip film is calculated according to the following formula:

w=K× (R×ν)/U

preferably, R =45000, ν =1.0 × 10^-6 m²The preferred embodiment of the utility model is that the main bracket is made of polyvinyl chloride (PVC) pipe or Acrylonitrile Butadiene Styrene (ABS) pipe, the connecting arm on the main bracket is made of copper pipe, the connecting arm on the main bracket is provided with a rotary hook, the rotary hooks are respectively connected with the hooks at two ends of the frame, selecting a stainless steel rotary hook, installing a main body support on a cable through a spring fastener, selecting the length of the corresponding cable according to the water depth of a sampling point, adjusting the position of the main body support on the cable to enable the main body support to be thrown to the designed depth, selecting a stainless steel spring fastener, installing two passive samplers on one main body support, carrying out parallel sampling on the same depth, and comprising a film, a frame for supporting the film, and the main body support, wherein the length of the film along the water flow direction enables the flow pattern of water on the whole surface of the film to be kept to be laminar flow, the film is installed on the frame to form the passive samplers, the film can be completely extended along the water flow direction, the passive samplers are installed on the main body support, and the main body support is thrown into a water body to enable the passive samplers to reach and keep the designed sampling depth, and the stretching direction of the film can be kept consistent with the water flow directionThe length (L) of the membrane in the direction of the water flow is limited by hydrodynamic conditions so that the flow pattern of the water remains laminar over the entire surface of the membrane for variations in the flow rate of the water during sampling. The length (L) of the film in the direction of the water flow is calculated according to the following formula:

L=(R×ν)/U

wherein R is Reynolds number (dimensionless) and ν is kinematic viscosity of water (unit m)²U is the flow rate of water (in m/s), the shape of the frame supporting the membrane can be rectilinear, open curved, closed curved, circular, triangular, quadrilateral, other polygonal shapes, and combinations of one or more of these said shapes, the frame can be suspended, the membrane can be fixed to the frame along one edge, a passive sampler can be assembled, the membrane can be made to extend completely in the direction of the water flow, the frame supporting the membrane is a circular ring made of wire, at the outer edge of the ring there are symmetrically two hooks, the frame can be suspended, and the ring can be made to rotate 360 degrees around these two hooks, the membrane is an elongated quadrilateral, the width (w) of the elongated membrane is the length (L) of the membrane in the direction of the water flow when K =1, the elongated membrane is fixed to the wire frame along one long edge, the passive sampler is assembled to form a film into a cylinder with the width (w) of the film as the extension direction, so as to be beneficial to the extension of the film along with water flow, two rotary hooks are respectively connected with a shackle at two ends of a metal wire frame, the center of a main body support is a cylindrical body, an upper connecting arm and a lower connecting arm are arranged on the cylindrical body and are perpendicular to the cylindrical body, the distance between the upper connecting arm and the lower connecting arm corresponds to the height of the passive sampler with the rotary hooks, the passive sampler is connected to the connecting arm on the main body support by the rotary hooks, the length of the connecting arm can enable the passive sampler to rotate 360 degrees by taking the two rotary hooks as fulcrums, so that the circular ring of the frame of the passive sampler can automatically adjust the direction along with the change of the water flow direction, the extension direction of the film can be kept consistent with the water flow direction, and the cylindrical body of, the top end of the cable is connected with a floating body marker, and the lower end of the cable is connected with a floating body markerThe whole system is thrown into a water body of a sampling point, one or more main body supports can be arranged at different positions on a cable rope, one or more passive samplers can be further arranged, the passive samplers can be made of different films, passive sampling at one or more depths can be carried out on the water body at one sampling point, two to three passive samplers can be arranged on one columnar body, parallel sampling can be carried out at the same depth, and the films can be polyethylene, polypropylene, polymethacrylate, polydimethylsiloxane, silicon rubber, polyformaldehyde, ethylene/vinyl acetate copolymer, polyamide, polycarbonate, polyurethane urea, polyacrylonitrile, polyvinyl chloride, polyvinylidene fluoride, polyethylene terephthalate, polybutylene terephthalate, polyethylene glycol terephthalate, Polystyrene, polysulfone, polyethersulfone, cellulose ester and these the combination of one or more in the material that obtains after the polymer modification, the chooseing for use type of film is changed according to the kind of the target pollutant that awaits measuring and the sampling time that requires, can adjust the length and the thickness of film, can change the surface area, volume and the quality of film, and then changes the enrichment ability of film to the adaptation detects the different environmental concentration of target pollutant, the utility model discloses a passive sample thief of film type can make the film keep best sampling efficiency under natural hydrodynamic force condition, the utility model discloses a film, install on the frame, through the rotation of frame for the extension direction of film keeps unanimous with the direction of rivers all the time, controls the width of film, lets the flow pattern of film surface water keep for the laminar flow, can obtain minimum diffusion boundary layer thickness like this, thereby increasing the mass transfer efficiency, accelerating the standard compound to reach the distribution balance, shortening the sampling time, enabling the whole film to be capable of consistently following the change of the water flow direction by the film arranged on the frame, enabling each section of the film on the arranged frame to be under the same mass transfer condition, enabling each part of the film to obtain the same enrichment efficiency, improving the sampling stability and accuracy of a single film type passive sampler, and arranging a plurality of film type passive samplers on a main body supportThe sampling is carried out in parallel, and the application mode can ensure that each film is positioned at the same depth under the similar hydrodynamic and mass transfer conditions, thereby improving the reproducibility of passive sampling.

In the technical scheme, the base membrane is a membrane body of one or more of polyethylene, polypropylene, polymethacrylate, polydimethylsiloxane, silicon rubber, polyformaldehyde, ethylene/vinyl acetate copolymer, polyamide, polycarbonate, polyurethane urea, polyacrylonitrile, polyvinyl chloride, polyvinylidene fluoride, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polysulfone, polyether sulfone, cellulose ester or materials obtained by modifying the polymers.

In the technical scheme, the thin film sheet and the frame which are in a sampling state along the water flow direction are defined as important technical characteristics, and the technical scheme has novelty, creativity and practicability in the technical field of passive samplers and suspension bracket devices for organic pollutants in a free dissolved state in a water body, and terms in the technical scheme can be explained and understood by patent documents in the technical field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the passive sampler for free dissolved organic pollutants in water according to the present invention,

figure 2 is a schematic view of the structure of the membrane sheet 1,

figure 3 is a schematic view of the structure of the frame 2,

figure 4 is a schematic view of the mounting of the pellicle membrane 1 and the frame 2,

figure 5 is a schematic view of one of the first embodiments of the suspension bracket device for free dissolved organic pollutants in water body of the present invention,

FIG. 6 is a schematic view of a second embodiment of the suspension bracket assembly of the present invention for freely dissolved organic pollutants in a water body,

the passive sampler comprises a passive sampler body-3, a thin film sheet-1, a frame-2, a main frame part-21, an upper hook part-22, a lower hook part-23, a floating ball-4, a cable rope-5, a bobbin-6, a support rod-7, a rotary hook-8, an anchor block-9 and a spring buckle-10.

Detailed Description

Terms such as "having," "including," and "comprising," as used herein with respect to the present invention, are to be understood as not specifying the presence or addition of one or more other elements or combinations thereof.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other, and unless otherwise specified, the devices and materials used in the following examples are commercially available, and if the processing conditions are not explicitly stated, please refer to the purchased product specification or follow the conventional method in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A passive sampler for free dissolved organic pollutants in water, fig. 1 shows a first embodiment of the present invention, which is specifically described with reference to the accompanying drawings, wherein a passive sampler body 3 comprises a thin film sheet 1 and a frame 2, and the thin film sheet 1 is disposed on the frame 2.

In the present embodiment, the film sheet 1 is provided as a rectangular strip-like body and the inner end face portion of the film sheet 1 is provided to be coupled with the frame 2.

Through pellicle 1, formed the support tie point to frame 2, by pellicle 1, realized being connected with frame 2, its technical aim at: is used for collecting free dissolved organic pollutants in water.

In the present embodiment, the width W of the film sheet 1 is set to W = K × L, where L = (R × ν)/U, R is the reynolds number (dimensionless), ν is the kinematic viscosity of water (unit m)²U is the flow rate of water (unit m/s), the expansion correction coefficient K is set to be 0.1-100, so as to ensure that the sampler can keep high sampling efficiency, reproducibility and stability under different flow rates of water,

when R =45000, v =1.0 × 10^-6 m²U =0.3 m/s, L =0.15 m, W is set to 0.015 m-1.5 m according to an expansion correction factor of 0.1-10, and the thickness of the pellicle membrane 1 is set to 23-27 μm.

The technical purpose is as follows: the device is used for meeting the width requirement of collecting free dissolved organic pollutants in a water body.

In the present embodiment, the thin film sheet 1 is a film-shaped body made of one or more of polyethylene, polypropylene, polymethacrylate, polydimethylsiloxane, silicone rubber, polyoxymethylene, ethylene, vinyl acetate copolymer, polyamide, polycarbonate, polyurethane urea, polyacrylonitrile, polyvinyl chloride, polyvinylidene fluoride, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polysulfone, polyethersulfone, cellulose ester, and a material obtained by modifying these polymers.

The technical purpose is as follows: is used for ensuring the stability performance in the collecting water body.

In the present embodiment, the frame 2 is provided to include a main frame portion 21, an upper hook portion 22, and a lower hook portion 23, and an inner end of the upper hook portion 22 and an inner end of the lower hook portion 23 are respectively provided to be coupled to the peripheral outer side surface portion of the main frame portion 21, and the main frame portion 21 is provided to be coupled to the film sheet 1, and the upper hook portion 22 and the lower hook portion 23 are respectively provided as a rod-shaped body having a hanging ring.

Through frame 2, formed the support tie point to pellicle film 1, by pellicle film 1, realized being connected with pellicle film 1, by last couple portion 22 and lower couple portion 23, realized the hookup with suspension support device, its technical aim at: for serving as a support carrier for the foil sheet 1.

In the present embodiment, the contour line of main frame portion 21 is provided as a straight line, an open curve, a closed curve, a polygonal line, or a combination line of one or more of these line segments.

The technical purpose is as follows: for distributing the membrane sheet 1 in the direction of the water flow.

In the present embodiment, the contour line of main frame portion 21 is provided in a circular, triangular or quadrangular shape and the peripheral end surface portion of main frame portion 21 is provided to be coupled to the inner end surface portion of pellicle 1, and main frame portion 21 is provided to be distributed in a cylindrical shape with pellicle 1.

The technical purpose is as follows: for distributing the film sheet 1 in a tubular state along the water flow direction.

In the present embodiment, the frame 2 and the membrane sheet 1 are arranged to be distributed in a single end-to-end coupling.

In the second embodiment of the utility model, the film sheet 1 is made of polyethylene film, the thickness of the film sheet 1 is 5 μm,

the outline of main frame portion 21 is set to be circular.

In the third embodiment of the present invention, the film sheet 1 is made of polypropylene, the thickness of the film sheet 1 is 1000 μm,

the outline of main frame portion 21 is set to be triangular.

In the fourth embodiment of the present invention, the thin film sheet 1 is made of polymethacrylate, the thickness of the thin film sheet 1 is 500 μm,

the outline of main frame portion 21 is formed in a quadrangular shape.

In the fifth embodiment of the present invention, the film sheet 1 is a film body of cellulose ester, the thickness of the film sheet 1 is 5-1000 μm,

the contour line of main frame portion 21 is set to an open curve.

In a second embodiment of the invention, the pellicle membrane 1 and the frame 2 are coupled to each other in a manner defining a sampling situation along the water flow direction.

In this embodiment, the pellicle membrane 1 and the frame 2 are arranged in a tubular distribution.

The second embodiment of the present invention is based on the first embodiment.

After thin film piece 1 and main frame portion 21 are installed, passive sample thief body 3 is wrapped up with aluminium foil paper, preserves under the environment of 20 degrees below zero for use, puts passive sample thief body 3 into the water, is connected upper hook portion 22 and lower hook portion 23 with the suspension support device, makes thin film piece 1 distribute along the rivers direction, is collected the sampling by thin film piece 1 free dissolved state organic pollutant in to the water.

The method for calculating the extension length of the passive sampler comprises the following steps:

passive sampler run length refers to the width W of the membrane sheet 1,

the length L of the film sheet 1 along the water flow direction is set to be L = (R x v)/U, R as Reynolds number (dimensionless), v is kinematic viscosity of water (unit m)²In/s), U is the flow rate of water (in m/s),

the width W of the thin film sheet 1 is set to be W = K × L, and the expansion correction coefficient K is set to be 0.1-100, so that the sampler can keep high sampling efficiency, repeatability and stability under different water flow rates.

In this embodiment, when R =45000, ν =1.0 × 10^-6 m²And/s, U =0.3 m/s and L =0.15 m, wherein W is set to be 0.015 m-1.5 m according to an expansion correction coefficient of 0.1-10, so as to ensure that the sampler can keep high sampling efficiency, repeatability and stability under different water flow rates.

The utility model provides a suspension support device for free dissolved state organic pollutant in water, figure 5 is one of the first embodiment of the utility model, combine the figure to specifically describe this embodiment, include floater 4, hawser 5, bobbin 6, bracing piece 7, rotatory couple 8, anchor block 9 and snak link 10 and be provided with hawser 5 between floater 4 and anchor block 9, be provided with snak link 10 between bobbin 6 and hawser 5 and be provided with bracing piece 7 between rotatory couple 8 and bobbin 6.

In this embodiment, the lower end ring of the float 4 is arranged to be coupled to a cable 5.

Through floater 4, formed the support tie point to hawser 5, by floater 4, realized being connected with hawser 5, its technical aim at: for use as a buoyancy-generating member.

In this embodiment, the cable 5 is provided as a textile rope and the upper end of the cable 5 is provided to be coupled with the float ball 4, the lower end of the cable 5 is provided to be coupled with the anchor block 9 and the cable 5 is provided to be coupled with the spring buckle 10.

Through hawser 5, formed the support tie point to floater 4, anchor block 9 and snak link 10, by hawser 5, realized being connected with floater 4, realized being connected with anchor block 9, realized being connected with snak link 10, its technical aim at: for use as a vertical support carrier extending in a body of water.

In this embodiment, anchor blocks 9 are provided as iron chains and anchor blocks 9 are provided in connection with cable 5.

Through anchor block 9, formed the support tie point to hawser 5, by anchor block 9, realized being connected with hawser 5, its technical aim at is realized: for maintaining the cable 5 in a vertical position in the body of water.

In this embodiment, the spring catch 10 is arranged to be movably coupled with the cable 5 and the spring catch 10 is arranged to be coupled with the bobbin 6 by means of a chain link.

Through snak link 10, formed the support tie point to hawser 5 and bobbin 6, by snak link 10, realized being connected with hawser 5, realized being connected with bobbin 6, its technical aim at is realized: serving as an intermediate connection between the bobbin 6 and the cable 5.

In the present embodiment, the bobbin 6 is provided as a tubular body and side portions of the bobbin 6 are respectively provided to be coupled with the support bar 7, the spring buckle 10 through a link chain.

Through bobbin 6, formed the support tie point to vaulting pole 7 and snak link 10, by bobbin 6, realized being connected with vaulting pole 7, realized being connected with snak link 10, its technical aim at really: for serving as a support carrier for the struts 7.

In the present embodiment, the support rod 7 is provided as a circular rod-shaped body and the inner end of the support rod 7 is provided to be coupled with the bobbin 6 and the outer end of the support rod 7 is provided to be coupled with the swivel hanger 8.

Through bracing piece 7, formed the support tie point to bobbin 6 and swivel hook 8, by bracing piece 7, realized being connected with bobbin 6, realized being connected with swivel hook 8, its technical aim at is realized: for serving as a support carrier for the swivel hanger 8.

In the present embodiment, the end of the swivel hanger 8 is provided to be coupled with the support bar 7 and the swivel hanger 8 is provided to be coupled with the upper and

lower hanger parts

22 and 23 in a hitching manner.

Through swivel hook 8, formed the support tie point to bracing piece 7 and frame 2, by swivel hook 8, realized being connected with bracing piece 7, realized being connected with frame 2, its technical aim at is real: for acting as a supporting carrier for the passive sampler body 3.

The upper hook part 22 and the lower hook part 23 are installed with the rotary hook 8, the thin film sheet 1 is installed between the supporting rods 7 through the main frame part 21, the anchor block 9 is placed in the water body, the floating ball 4 floats on the water surface, the mooring rope 5 is placed in the water body, the bobbin 6 swings along the water flow direction, the thin film sheet 1 is distributed along the water flow direction, the position of the spring buckle 10 on the mooring rope 5 is adjusted, and the depth of the thin film sheet 1 in the water body is adjusted.

Fig. 6 shows a second embodiment of the present invention, in which two support rods 7, two rotating hooks 8 and a passive sampler body 3 are set to form a set of swing sampling components and multiple sets of swing sampling components are set on the bobbin 6, and one bobbin 6, two spring fasteners 10 and at least one set of swing sampling components are set to form a set of water layer sampling components and multiple sets of water layer sampling components are set on the cable 5.

The sampling of the free dissolved organic pollutants in different water depths is realized, and the multi-group sampling of the free dissolved organic pollutants in the same water depth is realized.

The utility model has the characteristics of down:

1. due to the design of the thin film sheet 1 and the frame 2, sampling of the organic pollutants in the water body in the free dissolved state is realized through the thin film sheet 1, and definition that the thin film sheet 1 is in a distribution state along the water flow direction is realized through the frame 2, so that the sampling efficiency, the reproducibility and the stability of the organic pollutants in the water body in the free dissolved state are improved.

2. Due to the design of the thin film sheet 1, sampling along the water flow direction is realized.

3. Due to the design of the floating ball 4, the mooring rope 5, the bobbin 6, the supporting rod 7, the rotating hook 8, the anchor block 9 and the spring fastener 10, the suspension connection of the passive sampler body 3 is realized.

4. Owing to designed and carried out numerical range's injecion to the knot configuration form, made numerical range do the utility model discloses a technical scheme in the technical scheme technical characteristics, not through the formula calculation or through the technical characteristics that the limited number of experiments reachs, the experiment shows that this numerical range's technical characteristics has obtained fine technological effect.

5. Owing to designed the utility model discloses a technical characteristic, in technical characteristic's the effect alone and mutual set, through experimental demonstration, the utility model discloses an each item performance index is 1.7 times at least for current each item performance index, has fine market value through the aassessment.

Still other features associated with the membrane 1 and the frame 2 defining the sampling position along the water flow are all embodiments of the present invention, and the features of the above-described embodiments may be combined in any combination, and in order to satisfy the requirements of patent laws, patent practice rules and examination guidelines, all possible combinations of the features of the above-described embodiments will not be described again.

Above-mentioned embodiment is only the utility model provides a passive sample thief and suspension support device's a realization form for free dissolved state organic pollutant in water, according to the utility model provides a scheme other warp, increase or reduce wherein composition or step, perhaps will the utility model is used for other with the utility model discloses the technical field who is close all belongs to the utility model discloses a protection scope.

Claims

1. A passive sampler for free dissolved organic pollutants in a water body is characterized in that: comprises a film sheet (1) placed in a water body and a frame (2) which is arranged to be connected with the film sheet (1) and is used for forming the film sheet (1) in different shapes.

2. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 1, wherein: the membrane (1) and the frame (2) are coupled to each other in such a way as to define a sampling condition in the direction of the water flow.

3. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 1, wherein: the thin film sheet (1) and the frame (2) are arranged to be distributed in a tubular shape.

4. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 1, wherein: the film sheet (1) is arranged on the frame (2).

5. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 4, wherein: the film sheet (1) is configured into a rectangular strip-shaped body and the inner end surface part of the film sheet (1) is configured to be connected with the frame (2).

6. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 4, wherein: the width W of the film sheet (1) is set as W = K x L, wherein L = (R x v)/U, R is a Reynolds number dimensionless unit, v is a kinematic viscosity unit m of water²U is the flow rate unit m/s of water, and the expansion correction coefficient K is set to 0.1 to 100.

7. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 4, wherein: when R =45000, v =1.0 × 10^-6 m²And/s, U =0.3 m/s, L =0.15 m, and W is set to 0.015 m to 1.5 m in accordance with an extension correction coefficient of 0.1 to 10.

8. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 4, wherein: the film sheet (1) is set as a base film.

9. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 4, wherein: the thickness of the thin film sheet (1) is set to be 5-1000 μm.

10. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 4, wherein: the frame (2) is arranged to comprise a main frame part (21), an upper hook part (22) and a lower hook part (23), the inner end of the upper hook part (22) and the inner end of the lower hook part (23) are respectively arranged to be connected with the peripheral outer side surface of the main frame part (21), the main frame part (21) is arranged to be connected with the film sheet (1), and the upper hook part (22) and the lower hook part (23) are respectively arranged to be rod-shaped bodies with hanging rings.

11. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 10, wherein: the contour line of the main frame part (21) is set to be an open curve, a closed curve or a polygonal line.

12. The passive sampler for organic contaminants in a free-soluble state in a body of water of claim 10, wherein: the contour line of the main frame part (21) is circular, triangular or quadrilateral, the end surface part of the periphery end of the main frame part (21) is connected with the end surface part of the inner end of the thin film sheet (1), and the main frame part (21) is distributed in a cylindrical shape with the thin film sheet (1).

13. A passive sampler for organic pollutants in a freely soluble state in a body of water as claimed in any one of claims 1 to 12, characterized by: the frame (2) and the film sheet (1) are distributed in a mode of single end connection.

14. A suspension support device for free dissolved organic pollutants in water is characterized in that: the passive sampler for organic pollutants in a freely dissolved state in a water body according to claims 1 to 12, further comprising a floating ball (4), a cable (5), a bobbin (6), a support rod (7), a rotating hook (8), an anchor block (9) and a spring buckle (10), wherein the cable (5) is arranged between the floating ball (4) and the anchor block (9), the spring buckle (10) is arranged between the bobbin (6) and the cable (5), and the support rod (7) is arranged between the rotating hook (8) and the bobbin (6).

15. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the lower end ring of the floating ball (4) is connected with the mooring rope (5).

16. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the mooring rope (5) is a textile rope-shaped body, the upper end of the mooring rope (5) is connected with the floating ball (4), the lower end of the mooring rope (5) is connected with the anchor block (9), and the mooring rope (5) is connected with the spring buckle (10).

17. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the anchor block (9) is arranged as a chain and the anchor block (9) is arranged to be coupled with the cable (5).

18. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the spring catch (10) is arranged to be movably coupled to the cable (5) and the spring catch (10) is arranged to be coupled to the bobbin (6) by means of a chain link.

19. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the bobbin (6) is arranged to be a tubular body, and the side surface parts of the bobbin (6) are respectively arranged to be connected with the supporting rod (7) and the spring buckle (10) through the chain ring strip.

20. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the supporting rod (7) is a round rod-shaped body, the inner end of the supporting rod (7) is connected with the bobbin (6), and the outer end of the supporting rod (7) is connected with the rotating hook (8).

21. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: the end of the rotating hook (8) is connected with the support rod (7) and the rotating hook (8) is connected with the upper hook part (22) and the lower hook part (23) in a hanging way.

22. The suspension bracket device for free dissolved organic pollutants in water body as claimed in claim 14, wherein: two bracing pieces (7), two swivel hook (8) and one passive sample thief body (3) set up to constitute a set of swing sampling part and multiunit swing sampling part sets up on bobbin (6), and a bobbin (6), two snacks (10) and at least a set of swing sampling part set up to constitute a set of water layer sampling part and multiunit water layer sampling part sets up on hawser (5).