CN106769235A - A kind of environmental contaminants time series concentration passive type sampling apparatus - Google Patents
A kind of environmental contaminants time series concentration passive type sampling apparatus Download PDFInfo
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- CN106769235A CN106769235A CN201611037115.3A CN201611037115A CN106769235A CN 106769235 A CN106769235 A CN 106769235A CN 201611037115 A CN201611037115 A CN 201611037115A CN 106769235 A CN106769235 A CN 106769235A
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- time series
- coil pipe
- phase coil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a kind of environmental contaminants time series concentration passive type sampling apparatus, including the preceding reception phase coil pipe, the rear reception phase coil pipe of FEP, a PTFE or stainless steel and a ceramics or plastic material of an osmotic pumps, FEP, a PTFE or stainless steel antipriming pipe.The present invention is with osmotic pumps as power, driving receives the reception phase in phase coil pipe before being stored in, it is set to continue to flow through antipriming pipe, absorb the pollutant in air or water body, reception after absorption pollutant is received in phase coil pipe after being mutually stored in, the continuous absorption to pollutant and preservation are realized, the amount of the pollutant in the reception phase in phase coil pipe is received after being stored in eventually through analysis, so as to obtain the data i.e. time series data of the concentration changes with time of pollutant in air or water body.
Description
Technical field
The invention belongs to enviromental monitoring equipment technical field, and in particular to a kind of environmental contaminants time series concentration is passive
Formula sampling apparatus.
Background technology
Passive sample devices are general to be constituted by receiving phase and diffusion restricting membrane.Receive mutually can be solvent, chemical reagent or
Solid absorbent.Diffusion restricting membrane can slow down accumulative speed of the target compound on phase is received, and limit Cucumber transmission,
Make sampler that there is certain selectivity.Passive sample devices are based on the freedom that pollutant receives phase from surrounding medium to sampler
Diffusion process, its driving force is the difference of chemical potential of the pollutant between surrounding medium and reception phase.Sampler cloth is placed on
Reclaimed after a period of time in environment, determine the total amount of pollutant for receiving and being enriched with phase, with reference to the sampling time and in advance in laboratory
The sampling rate for measuring, can be calculated the time mean concentration of sampling period pollutant.Existing passive sample devices are main
Including semipermeable membrane devices (SPMD), diffusion film (DGT), chemical collecting devicePolarity is organic
Thing integrated sampling device (POCIS) etc..Passive sampler can carry out continuous monitoring, without external impetus, lay conveniently,
Various pollutants in water body or atmospheric environment such as trace metal, polycyclic aromatic hydrocarbon have been widely used at present, all kinds of agricultural chemicals, resisted
The sampling monitoring of raw element, ammonia, formaldehyde and VOC etc..
Pollutant concentration in the environment changes at any time, and the data for obtaining concentration changes with time are dense time series
Degrees of data could exactly characterize the change procedure of pollutant in environment.However, the reception in existing Passive sampler exists
Sampling period is non-renewable, often lays and once can only obtain a time mean concentration, and environment can not possibly be obtained using them
The time series concentration of middle pollutant, it is impossible to realize to some fast-changing processes as happen suddenly contamination accident, Solar diurnal variation,
The accurate measurements of flood, storm, wawter bloom event, tide etc..
The content of the invention
It is an object of the invention to overcome prior art defect, there is provided a kind of environmental contaminants time series concentration passive type
Sampling apparatus.
Technical scheme is as follows：
A kind of environmental contaminants time series concentration passive type sampling apparatus, including
One osmotic pumps, including a lucite material seal casinghousing, there is in the seal casinghousing reverse osmosis membrane, will be close
Capsule body is divided into the output cavity and for filling saturated nacl aqueous solution and solid sodium chloride and fills distilled water and ion exchange
The input cavity of resin；
The preceding reception phase coil pipe of one FEP, PTFE or stainless steel, its liquid feeding end connects the output cavity of osmotic pumps, in it
Store reception phase in advance；
The rear reception phase coil pipe of one FEP, PTFE or stainless steel, its outlet end connects the input cavity of osmotic pumps, in it
Store distilled water in advance；
With a porous ceramics or the antipriming pipe of plastic material, the outlet end of phase coil pipe is received before connection and phase coil pipe is received afterwards
Liquid feeding end.
In a preferred embodiment of the invention, the reception is mutually acid or the aqueous solution of alkali, is used to gather environment
In inorganic pollution.
It is further preferred that it is described receive phase in it is spaced with reception phase physicochemical properties it is different between
Parting matter.
In a preferred embodiment of the invention, the reception is mutually alkane or aromatic hydrocarbons, in being used to gather environment
Organic pollution.
It is further preferred that it is described receive phase in it is spaced with reception phase physicochemical properties it is different between
Parting matter.
It is further preferred that received after described between phase coil pipe liquid feeding end and the antipriming pipe being provided with a detection unit, use
To determine to receive mutually and be spaced the time that material stream crosses detection unit.
It is further preferred that the detection unit is micro conductivity instrument or microspectrophotometer.
Beneficial effects of the present invention：
1st, with osmotic pumps as power, driving receives the reception phase in phase coil pipe to the present invention before being stored in, continue to flow through it
Antipriming pipe, absorbs the pollutant in air or water body, absorbs after the reception after pollutant is mutually stored in reception phase coil pipe, real
The continuous absorption to pollutant and preservation are showed, the pollution in the reception phase in phase coil pipe have been received after being stored in eventually through analysis
The amount of thing, so as to obtain the data i.e. time series data of the concentration changes with time of pollutant.
2nd, the present invention uses osmotic pumps, and without external power supply, small volume is lightweight, it is adaptable to prolonged field
Sampling.
3rd, the reception in preceding reception phase coil pipe is mutually separated into section by the present invention using interval material, and in rear reception phase coil pipe
Entrance install detection unit, using be spaced material and receive phase physicochemical properties difference, accurate measurements receive mutually flow
Spend the time of antipriming pipe, i.e. sampling time.
Brief description of the drawings
Fig. 1 is the structural representation of the environmental contaminants time series concentration passive type sampling apparatus of the embodiment of the present invention 1 and 2
Figure.
Fig. 2 is the structural representation of the environmental contaminants time series concentration passive type sampling apparatus of the embodiment of the present invention 3 and 4
Figure.
Specific embodiment
Technical scheme is further detailed and described below by way of specific embodiment combination accompanying drawing.
Embodiment 1
As shown in figure 1, a kind of environmental contaminants time series concentration passive type sampling apparatus, including an osmotic pumps 1,
The rear reception phase coil pipe 3 and of the preceding reception phase coil pipe 2, FEP, a PTFE or stainless steel of FEP, PTFE or stainless steel
The antipriming pipe 4 of porous ceramics or plastic material (preferably AF2400).
Osmotic pumps 1, including a lucite material seal casinghousing 10, there is in the seal casinghousing 10 reverse osmosis membrane
11, by 10 points of seal casinghousing for an output cavity 15 and for filling saturated nacl aqueous solution 12 fills distilled water and amberlite
The input cavity 16 of fat 13, wherein, the specification of reverse osmosis membrane 11 is determined by the sampling flow velocity for needing, and is contained in saturated nacl aqueous solution 12
There are a large amount of solid sodium chlorides, preferred polishing resin (such as Tao Shi DOWEX of ion exchange resin 13TM)；
Preceding reception phase coil pipe 2, its liquid feeding end connects the output cavity 15 of osmotic pumps 1, stores reception phase 21 in it in advance, should
Reception phase 21 is alkane (such as n-hexane) or aromatic hydrocarbons (such as toluene), that is to say, that the present embodiment is used to detect the organic dirt in environment
Dye thing；
Phase coil pipe 3 is received afterwards, and its outlet end connects the input cavity 16 of osmotic pumps 1, distilled water is stored in advance in it；
Antipriming pipe 4, receives the outlet end and the rear liquid feeding end for receiving phase coil pipe 3 of phase coil pipe 2 before connection.
The course of work is specific as follows：Ion exchange resin 13 and distilled water are put into the input cavity 16 of osmotic pumps 1, are being oozed
Saturated nacl aqueous solution and solid sodium chloride 12 are put into the output cavity 15 of saturating pump 1, reception phase is filled with preceding reception phase coil pipe 2
21, distilled water is filled with rear reception phase coil pipe 3, connect all parts.In placing this invention into tested water body or air,
Under the driving of osmotic pumps 1, receive phase 21 and continuously flow through antipriming pipe 4, the pollutant in tested water body or air is passed through
The micropore of antipriming pipe 4 is absorbed by reception phase 21, absorb pollutant reception phase 21 enter after receive in phase coil pipe 3 and be stored in
This.After sampling terminates, the reception phase 21 in rear reception phase coil pipe 3 is divided into some sections, by each section in rear reception phase coil pipe 3
Position determines that this section flows through the time of antipriming pipe 4, i.e. sampling time.The concentration of pollutant in each section is analyzed with analytical instrument, and
The time series concentration of pollutant in environment is just obtained with reference to each section of sampling time.
Embodiment 2
As shown in figure 1, concrete structure is same as Example 1, except that it is the aqueous solution of sour or alkali to receive phase 21,
That is, the present embodiment is used to detect the inorganic pollution (such as ammonia and hydrogen sulfide) in environment.
Embodiment 3
As shown in Fig. 2 the structure of the present embodiment and reception phase 21 are same as Example 1, except that, receiving phase 21
It is interior with spaced from the different interval material 22 (preferred aqueous solutions) of physicochemical properties that is receiving phase 21, being used to will be preceding
The reception phase 21 received in phase coil pipe 2 is divided into section.Meanwhile, between the liquid feeding end and the antipriming pipe 4 of rear reception phase coil pipe 3
It is provided with a detection unit 5.Interval material 22 is different with the physicochemical properties for receiving phase 21, when they flow through detection unit 5,
Detectable different signal, the sampling time of sampler can be accurately determined according to this signal.
Preferably, the interval material 22 is the coloured aqueous solution, and the detection unit 5 is microspectrophotometer.
Preferably, the interval material 22 is salting liquid, and the detection unit 5 is micro conductivity meter.
Embodiment 4
As shown in Fig. 2 the structure of the present embodiment and reception phase 21 are same as Example 2, except that, receiving phase 21
It is interior with spaced from the different interval material 22 (preferably air) of physicochemical properties that is receiving phase 21, be used to preceding to connect
The reception phase 21 received in phase coil pipe 2 is divided into section.Meanwhile, set between the liquid feeding end and the antipriming pipe 4 of rear reception phase coil pipe 3
There is a detection unit 5.Interval material 22 is different with the physicochemical properties for receiving phase 21, when they flow through detection unit 5, can
Different signals are detected, the sampling time of sampler can be accurately determined according to this signal.
Preferably, the detection unit 5 is microspectrophotometer or micro conductivity meter.
The above, only presently preferred embodiments of the present invention, therefore can not according to this limit the scope of present invention implementation, i.e.,
The equivalence changes made according to the scope of the claims of the present invention and description and modification, all should still belong in the range of the present invention covers.
Claims (7)
1. a kind of environmental contaminants time series concentration passive type sampling apparatus, it is characterised in that：Including
One osmotic pumps, including a lucite material seal casinghousing, there is a reverse osmosis membrane, by capsul in the seal casinghousing
Body is divided into the output cavity and for filling saturated nacl aqueous solution and solid sodium chloride and fills distilled water and ion exchange resin
Input cavity；
The preceding reception phase coil pipe of one FEP, PTFE or stainless steel, its liquid feeding end connects the output cavity of osmotic pumps, in it in advance
Store reception phase；
The rear reception phase coil pipe of one FEP, PTFE or stainless steel, its outlet end connects the input cavity of osmotic pumps, in it in advance
Store distilled water；
With a porous ceramics or the antipriming pipe of plastic material, the outlet end of phase coil pipe is received before connection and entering for phase coil pipe is received afterwards
Liquid end.
2. a kind of environmental contaminants time series concentration passive type sampling apparatus as claimed in claim 1, it is characterised in that：Institute
The aqueous solution for receiving mutually for acid or alkali is stated, is used to gather the inorganic pollution in environment.
3. a kind of environmental contaminants time series concentration passive type sampling apparatus as claimed in claim 2, it is characterised in that：Institute
State and receive in phase with the spaced interval material different from physicochemical properties that are receiving phase.
4. a kind of environmental contaminants time series concentration passive type sampling apparatus as claimed in claim 1, it is characterised in that：Institute
It is mutually alkane or aromatic hydrocarbons to state reception, is used to gather the organic pollution in environment.
5. a kind of environmental contaminants time series concentration passive type sampling apparatus as claimed in claim 4, it is characterised in that：Institute
State and receive in phase with the spaced interval material different from physicochemical properties that are receiving phase.
6. any one environmental contaminants time series concentration passive type as described in any claim in claim 1 to 5
Sampling apparatus, it is characterised in that：Received after described between phase coil pipe liquid feeding end and the antipriming pipe and be provided with a detection unit, be used to
It is determined that receiving mutually and being spaced the time that material stream crosses detection unit.
7. a kind of environmental contaminants time series concentration passive type sampling apparatus as claimed in claim 6, it is characterised in that：Institute
Detection unit is stated for micro conductivity instrument or microspectrophotometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037115.3A CN106769235B (en) | 2016-11-23 | 2016-11-23 | A kind of environmental contaminants time series concentration passive type sampling apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037115.3A CN106769235B (en) | 2016-11-23 | 2016-11-23 | A kind of environmental contaminants time series concentration passive type sampling apparatus |
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| CN106769235A true CN106769235A (en) | 2017-05-31 |
| CN106769235B CN106769235B (en) | 2019-07-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108256197A (en) * | 2018-01-10 | 2018-07-06 | 四川大学 | The determining method of water body residence time in energy dissipation tank |
| CN113358423A (en) * | 2021-05-20 | 2021-09-07 | 合肥学院 | Quasi-continuous environment atmospheric gas sampling device |
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| CN105784415A (en) * | 2016-03-08 | 2016-07-20 | 中国科学院生态环境研究中心 | Passive sampler for high-resolution determination of freely dissolved pollutant concentration of pore water |
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| CN101532921A (en) * | 2008-03-11 | 2009-09-16 | 中国科学院生态环境研究中心 | Passive sampling device with hollow fiber membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108256197A (en) * | 2018-01-10 | 2018-07-06 | 四川大学 | The determining method of water body residence time in energy dissipation tank |
| CN113358423A (en) * | 2021-05-20 | 2021-09-07 | 合肥学院 | Quasi-continuous environment atmospheric gas sampling device |
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| Publication number | Publication date |
|---|---|
| CN106769235B (en) | 2019-07-30 |
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