CN203385613U - Portable type field online solid-phase membrane extraction device - Google Patents
Portable type field online solid-phase membrane extraction device Download PDFInfo
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- CN203385613U CN203385613U CN201320477590.8U CN201320477590U CN203385613U CN 203385613 U CN203385613 U CN 203385613U CN 201320477590 U CN201320477590 U CN 201320477590U CN 203385613 U CN203385613 U CN 203385613U
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Abstract
The utility model relates to a portable type field online solid-phase membrane extraction device. The portable type filed online solid-phase membrane extraction device comprises an extraction device box body, and is internally provided with a solid-phase extraction assembly, a power supply, a control module, a first peristaltic pump, a second peristaltic pump, a substitution container, a waste liquid container and a sample liquid container, wherein the solid-phase extraction assembly comprises a solid-phase extraction membrane supporting piece and a flow guide cover; a liquid inlet of the first peristaltic pump is connected with the substitution container by a pipeline; a liquid outlet of the first peristaltic pump is connected with a first liquid inlet of the flow guide cover by a pipeline; a liquid inlet of the second peristaltic pump is connected with the sample liquid container by a pipeline; a liquid outlet of the second peristaltic pump is connected with a second liquid inlet of the flow guide cover by a pipeline; the sample liquid container is connected with a sample liquid supplying pipeline; the control module controls the operation and flow speeds of the first peristaltic pump and the second peristaltic pump. According to the portable type field online solid-phase membrane extraction device, the problems that the time for an extraction process of a solid-phase extraction column is long, the device is easily blocked and the quality is uncontrollable are solved, and the timeliness of an organic analysis and the accurate adding of substitutions are achieved.
Description
Technical field
The utility model relates to Analysis of Organic Substances technical field in water, relates to more specifically the online immobilon-p extraction equipment of a kind of Portable field.
Background technology
The organic water sample storage of tradition, transportation existing problems.In water, organic analysis has long-term our bottleneck of puzzlement, be that organism can keep relative stability in water body environment, once but enter in this subenvironment of sampling bottle, will change rapidly, so in a lot of water, the Analysis of Organic Substances method requires to adopt i.e. analysis, at most can not be over 4 hours, but generalized case is, water sample is got back to the time in laboratory just considerably beyond 4 hours, and water sample is put for a long time, affected by following factors, some component may change.Biodyne: the metabolic activity of microorganism, as the effect of bacterium, algae and other biological can change the chemical form of many measured objects, can affect the concentration of many testing indexs.Chemical factor: measuring component may be oxidated or reduced, and may cause measurement result and water sample actual conditions not to be inconsistent.Physical factor: measure component be attracted on container or the surface of suspension on, the volatilization loss of some organic compound and some volatile components.The tradition Methods To Preserve Water Samples, adopt 4 ℃ of refrigerations, is stored in dark place, can suppress biological activity, slows down physical action and chemical reaction velocity, but can not stop sample property to change.And the transportation of traditional organic sample, sample storage, in the 1L Brown Glass Brown glass bottles and jars only, need be placed in special congealer, puts into ice bag.Volume is comparatively huge, careless slightly, and broken bottle easily occurs, and conevying efficiency is low, causes transportation cost high.
Day by day flourishing at the scientific analysis instrument, today that the organism quantitative analysis method is gradually perfect, affect in the factor that the accurate quantitative analysis of organic water sample analyzes, scientific instrument and pre-treating method have been withdrawn to back burner, and the negative issue that the links such as the storage time of water sample before sending into laboratory, transportation exist is exaggerated.Variation has occurred in properties of samples, and the reliability of analysis result will be under suspicion.How can adopt rapidly the problem that laboratory has become many brainstrust headaches of delivering to of representative sample and safety.
Since later stage seventies Solid-Phase Extraction method (Solid Phase extraction, SPE) since coming out, developed comparatively rapidly, SPE is that a kind of use solid-phase adsorbent is extracted, not only be suitable for Trace Organic Compounds in the extracting and enriching air, and be widely used in the pre-service of water sample.Do solid phase extraction techniques abroad and preserved organic research work, report is arranged, organism is preserved 180 days in solid phase extraction column or solid-phase extraction membrane under 4 ℃ of environment, and the recovery of object still can, 79% to 93%, still be studied as a sampling technique.At present domestic enrichment extracting method and the device that also is not applicable to the trace materials of extensive field sampling.The Gao Hong of Tongji University literary composition utility model " method for extracting trace substances in filed and portable solid-phase extractor " (patent No.: 201010100226), this device comprises stirrer, peristaltic pump, example reaction groove, mozzle and extraction column, the example reaction groove is placed on stirrer, mozzle one end is inserted in the example reaction groove, be connected the other end and extraction column are suitable for reading, the extraction column lower end connects the peristaltic pump water inlet.This device is used solid-phase extraction column to carry out field extraction work, have in actual use some problems, such as the post footpath of solid-phase extraction column is narrower, flow velocity can not be too large, extraction time is oversize, the easy obstructions of cylinder etc., the existence of these problems causes it to be not suitable for large-scale field on-line extraction.And, due to environmental sample substrate complexity, the content of object is low, need to removes and disturb and enrichment concentrates by pre-service.Pretreatment operation is loaded down with trivial details, slips up also many, and the analytical error of introduction is also more.If there is no data quality control method, whether the analyst is difficult to learn with the verification sample analysis accurate.Usually in laboratory, by adding substitute, pretreatment process is monitored.And the accurate interpolation problem of above utility model patent unresolved substitute, so even if device can be used in the field extraction, but the process of extraction is uncontrollable, the result finally recorded is also uncontrollable.
The utility model content
The utility model provides a kind of Portable field online immobilon-p extraction equipment.The solid-phase extraction membrane of the utility model device adopts the film of disk-like structure as extraction carrier, specific surface area is large, and back-pressure reduces, and can adopt higher flow velocity, can effectively avoid the blockage problem of solid-phase extraction column, there is the incomparable advantage of solid phase extraction column the on-line extraction aspect in the wild.Because this device has been used solid-phase extraction membrane, rate of extraction can reach 200mL/min, can by the peristaltic pump of two platform independent, make water sample and substitute cross membrane extraction so simultaneously, can realize the accurate interpolation of substitute, and then make whole field extraction process quality controllable.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
The online immobilon-p extraction equipment of a kind of Portable field, comprise the extraction equipment casing, described extraction equipment box house is equipped with: Solid-Phase Extraction assembly, the first peristaltic pump, the second peristaltic pump, substitute container, waste fluid container, sample liquid container, power supply, control module;
Described Solid-Phase Extraction assembly comprises Solid-Phase Extraction membrane support and fairing cap,
The lower end of described Solid-Phase Extraction membrane support is provided with the liquid effuser, and described liquid effuser is connected by pipeline with waste fluid container; The inside of described Solid-Phase Extraction membrane support is provided with the first support member and the second support member, and the first support member is positioned at the top of the second support member; Be respectively equipped with supporting network on the first support member and the second support member; Lay solid-phase extraction membrane on the supporting network of the second support member;
Described fairing cap is provided with the first inlet opening and the second inlet opening, and described fairing cap is sealably coupled to the upper end of described Solid-Phase Extraction membrane support;
The inlet of described the first peristaltic pump is connected by pipeline with the substitute container, and the liquid outlet of the first peristaltic pump is connected by pipeline with the first inlet opening of fairing cap;
The inlet of described the second peristaltic pump is connected by pipeline with the sample liquid container, and the liquid outlet of the second peristaltic pump is connected by pipeline with the second inlet opening of fairing cap;
Described sample liquid container is connected with the sample liquid feeding pipe;
Described control module is electrically connected to power supply, the first peristaltic pump, the second peristaltic pump respectively, and control module is controlled operation and the flow velocity of the first peristaltic pump and the second peristaltic pump.
Further, described Solid-Phase Extraction membrane support is cylindrical, it comprises the first cylindrical body, the second cylindrical body and the 3rd cylindrical body be connected successively, the inside of the first cylindrical body has the first column cavity, the inside of the second cylindrical body has the second column cavity, the inside of the 3rd cylindrical body has the 3rd column cavity, and the lower end of the 3rd section cylindrical body is communicated with the liquid effuser; The diameter of the first column cavity, the second column cavity and the 3rd column cavity reduces successively, and the joining place of the first cylindrical body and the second cylindrical body is the first support member, and the joining place of the second cylindrical body and the 3rd cylindrical body is the second support member.Be provided with the film of disk-like structure on described the first support member and the second support member.
The film that adopts disk-like structure due to solid-phase extraction membrane is as extraction carrier, and specific surface area is large, and back-pressure reduces, and can adopt higher flow velocity, can effectively avoid the blockage problem of solid-phase extraction column.
Further, described control module comprises the first peristaltic pump flow velocity setting apparatus, the first peristaltic pump flow speed controller, the second peristaltic pump flow velocity setting apparatus, the second peristaltic pump flow speed controller;
Input the first flow rate information to the first peristaltic pump flow speed controller by the first peristaltic pump flow velocity setting apparatus, the first peristaltic pump flow speed controller is controlled the first peristaltic pump flow velocity; Input the second flow rate information to the second peristaltic pump flow speed controller by the second peristaltic pump flow velocity setting apparatus, the second peristaltic pump flow speed controller is controlled the second peristaltic pump flow velocity.
Further, the diameter of described the second column cavity is 48mm, and the diameter of described solid phase extraction film is 47mm.
Further, place filtration aid on the supporting network of the first support member.
The beneficial effects of the utility model are: realized the extraction of online field, the time that overcome in the solid-phase extraction column extraction process is long, easily stop up, the uncontrollable problem of quality, solved organic analysis ageing and substitute accurately add problem, this device simplifies the structure, is easy to manufacture, volume is little, lightweight, is easy to carry and operates.
The accompanying drawing explanation
The online immobilon-p extraction equipment of the Portable field that Fig. 1 is a kind of embodiment of the utility model schematic diagram;
Fig. 2 is the utility model Solid-Phase Extraction membrane support schematic diagram;
The A-A sectional view that Fig. 3 is Fig. 2;
The tangent plane schematic diagram that Fig. 4 is the utility model Solid-Phase Extraction membrane support;
The tangent plane schematic diagram that Fig. 5 is the utility model fairing cap.
Fig. 6 is the utility model battery, control module, the first peristaltic pump, the second peristaltic pump connection diagram.
In accompanying drawing, the list of parts of each label representative is as follows:
1, the extraction equipment casing, 2, the Solid-Phase Extraction assembly, 21, the Solid-Phase Extraction membrane support, 211, the first cylindrical body, 212, the second cylindrical body, 213, the 3rd cylindrical body, 214, the liquid effuser, 215, supporting network, 216, solid-phase extraction membrane, 22, fairing cap, 221, the first inlet opening, 222, the second feed liquor, 3, the first peristaltic pump, 4, the second peristaltic pump, 5, the substitute container, 6, waste fluid container, 7, the sample liquid container, 8, power supply, 9, control module, 91, the first peristaltic pump flow velocity setting apparatus, 92, the second peristaltic pump flow velocity setting apparatus, 93, the first peristaltic pump flow speed controller, 94, the second peristaltic pump flow speed controller.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, the online immobilon-p extraction equipment of the Portable field of a kind of embodiment of the utility model, comprise extraction equipment casing 1, the extraction equipment box house is equipped with: Solid-Phase Extraction assembly 2, the first peristaltic pump 3, the second peristaltic pump 4, substitute container 5, waste fluid container 6, sample liquid container 7, power supply 8, control module 9.
Solid-Phase Extraction assembly 2 comprises Solid-Phase Extraction membrane support 21 and fairing cap 22,
The lower end of Solid-Phase Extraction membrane support is provided with liquid effuser 214, and liquid effuser 214 is connected by pipeline with waste fluid container 6; The inside of Solid-Phase Extraction membrane support is provided with the first support member and the second support member, and the first support member is positioned at the top of the second support member; Be respectively equipped with supporting network 215 on the first support member and the second support member; Lay solid-phase extraction membrane 216 on the supporting network of the second support member.When being detected, on the supporting network 215 of the first support member, optionally place filtration aid.
On fairing cap, 22 are provided with the first inlet opening 221 and the second inlet opening 222, and fairing cap 22 is sealably coupled to the upper end of Solid-Phase Extraction membrane support 21;
The inlet of the first peristaltic pump 3 is connected by pipeline with substitute container 5, and the liquid outlet of the first peristaltic pump 3 is connected by pipeline with the first inlet opening 221 of fairing cap;
The inlet of the second peristaltic pump 4 is connected by pipeline with sample liquid container 7, and the liquid outlet of the second peristaltic pump 4 is connected by pipeline with the second inlet opening 222 of fairing cap;
Sample liquid container 7 is connected with the sample liquid feeding pipe;
As shown in Fig. 2 to Fig. 5, the Solid-Phase Extraction membrane support 21 of a kind of embodiment of the utility model is cylindrical, it comprises the first cylindrical body 211, the second cylindrical body 212 and the 3rd cylindrical body 213 be connected successively, the first cylindrical body 211, the second cylindrical body 212 and the 3rd cylindrical body 213 are preferably cylindrical column body, and external diameter is identical.The inside of the first cylindrical body 211 has the first column cavity, the inside of the second cylindrical body 212 has the second column cavity, the inside of the 3rd cylindrical body 213 has the 3rd column cavity, and the lower end of the 3rd section cylindrical body 213 is communicated with liquid effuser 214; The diameter of the first column cavity, the second column cavity and the 3rd column cavity reduces successively, the joining place of the first cylindrical body 211 and the second cylindrical body 212 is the first support member, and the joining place of the second cylindrical body 212 and the 3rd cylindrical body 213 is the second support member.
The first cylindrical body 211 upper end-face edges are provided with screw thread in the present embodiment, and the relevant position of fairing cap 22 is provided with the circular hole passed for screw, by screw by Solid-Phase Extraction membrane support 21 with together with fairing cap 22 is sealingly clamped to.Adopt that this to be fixedly connected with the mode manufacturing processing technic simple, convenient disassembly in follow-up use.
The control module 9 of another kind of embodiment comprises the first peristaltic pump flow velocity setting apparatus 91, the first peristaltic pump flow speed controller 93, the second peristaltic pump flow velocity setting apparatus 92, the second peristaltic pump flow speed controller 94;
By first peristaltic pump flow velocity setting apparatus 91 input the first flow rate information, control the first peristaltic pump 3 flow velocitys to the first peristaltic pump flow speed controller 93, the first peristaltic pump flow speed controllers 93; By second peristaltic pump flow velocity setting apparatus 92 input the second flow rate information, control the second peristaltic pump 4 flow velocitys to the second peristaltic pump flow speed controller 94, the second peristaltic pump flow speed controllers 94.
Owing to being provided with above-mentioned control module 9, can set respectively the flow velocity of the first peristaltic pump and the second peristaltic pump, and then in testing process, according to detecting the addition that needs to control accurately replacement liquid and sample liquid, adition process is simple, does not need manually-operated.
Above-described embodiment is further improved, and the diameter of described the second column cavity is 48mm, and the diameter of solid phase extraction film is 47mm.
Adopting the solid phase extraction film of above-mentioned diameter can the sample liquid feed liquor to solve flow velocity can not be too large, and extraction time is oversize, and cylinder holds susceptible to plugging problem.
Use procedure and the principle of work of the online immobilon-p extraction equipment of the Portable field in above-described embodiment are as follows:
The amount that substitute adds in testing process is generally considerably less (as the concentration of substitute is 1.0mg/L, addition is about 50 μ L left and right), in laboratory, normally first to the substitute that adds 50 μ L in the 1L water sample, after mixing, by solid phase extraction column, extracted again.If the field on-line extraction, so little volume is difficult to accurately add, thus can pass through the concentration of dilution substitute, thus the volume added, as: the concentration that can adjust substitute is 1.0 μ g/L, and the volume added so is just 50mL.The sample volume of general water sample is 1L, and the loading speed of the utility model Solid-Phase Extraction membrane module 2 can reach 200mL/min, and the loading time is 5min like this; Substitute and water sample should be controlled as far as possible and start to add simultaneously, and add simultaneously, can guarantee that like this substitute and sample are to pass through more uniformly solid-phase extraction membrane; Flow velocity with solid-phase extraction membrane 200mL/min completes and is complementary within 5min, and the flow velocity of substitute need to reach 10mL/min, and this flow velocity adopts peristaltic pump of the present utility model accurately to control, and than being easier to, realizes.If extracted with solid phase extraction column, this point can't realize.Because, with solid phase extraction column extraction 1L water sample, generally need the left and right with 1h, if sample is more muddy, pillar stops up, and likely required time is more, in order to be complementary with it, the flow velocity of substitute need to reach 50mL/60min=0.83mL/min, and so little flow velocity is difficult to accurately control.Therefore solid-phase extraction membrane has the incomparable advantage of solid phase extraction column in the on-line extraction aspect in the wild.
With sample liquid volume 1L; it is 200mL/min that sample liquid adds flow velocity; it is that 10mL/min is that example describes that replacement liquid adds flow velocity; those skilled in the art are according to the difference of working sample liquid and replacement liquid ratio; can calculate other concrete flow parameters, all fall into protection domain of the present utility model.
1, by the flow rate information of the first peristaltic pump flow velocity setting apparatus 91 input 10mL/min; Flow rate information by the second peristaltic pump flow velocity setting apparatus 92 input 200mL/min.2, replacement liquid is added in substitute container 5, the sample liquid feeding pipe is communicated with the sample liquid water source.3, open peristaltic pump, the first peristaltic pump and the second peristaltic pump pump into replacement liquid and sample liquid in Solid-Phase Extraction membrane support 21 according to setting flow velocity, are extracted.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. the online immobilon-p extraction equipment of Portable field, comprise extraction equipment casing (1), it is characterized in that, described extraction equipment box house is equipped with: Solid-Phase Extraction assembly (2), the first peristaltic pump (3), the second peristaltic pump (4), substitute container (5), waste fluid container (6), sample liquid container (7), power supply (8), control module (9);
Described Solid-Phase Extraction assembly (2) comprises Solid-Phase Extraction membrane support (21) and fairing cap (22),
The lower end of described Solid-Phase Extraction membrane support is provided with liquid effuser (214), and described liquid effuser (214) is connected by pipeline with waste fluid container (6); The inside of described Solid-Phase Extraction membrane support is provided with the first support member and the second support member, and the first support member is positioned at the top of the second support member; Be respectively equipped with supporting network (215) on the first support member and the second support member; Lay solid-phase extraction membrane (216) on the supporting network of the second support member;
On described fairing cap, (22) are provided with the first inlet opening (221) and the second inlet opening (222), and described fairing cap (22) is sealably coupled to the upper end of described Solid-Phase Extraction membrane support (21);
The inlet of described the first peristaltic pump (3) is connected by pipeline with substitute container (5), and the liquid outlet of the first peristaltic pump (3) is connected by pipeline with first inlet opening (221) of fairing cap;
The inlet of described the second peristaltic pump (4) is connected by pipeline with sample liquid container (7), and the liquid outlet of the second peristaltic pump (4) is connected by pipeline with second inlet opening (222) of fairing cap;
Described sample liquid container (7) is connected with the sample liquid feeding pipe;
Described control module (9) is electrically connected to power supply (8), the first peristaltic pump (3), the second peristaltic pump (4) respectively, and control module (9) is controlled operation and the flow velocity of the first peristaltic pump (3) and the second peristaltic pump (4).
2. the online immobilon-p extraction equipment of Portable field according to claim 1, it is characterized in that, described Solid-Phase Extraction membrane support (21) is cylindrical, it comprises the first cylindrical body (211) be connected successively, the second cylindrical body (212) and the 3rd cylindrical body (213), the inside of the first cylindrical body (211) has the first column cavity, the inside of the second cylindrical body (212) has the second column cavity, the inside of the 3rd cylindrical body (213) has the 3rd column cavity, and the lower end of the 3rd section cylindrical body (213) is communicated with liquid effuser (214), the diameter of the first column cavity, the second column cavity and the 3rd column cavity reduces successively, the joining place of the first cylindrical body (211) and the second cylindrical body (212) is the first support member, and the joining place of the second cylindrical body (212) and the 3rd cylindrical body (213) is the second support member.
3. the online immobilon-p extraction equipment of Portable field according to claim 1 and 2, it is characterized in that, described control module (9) comprises the first peristaltic pump flow velocity setting apparatus (91), the first peristaltic pump flow speed controller (93), the second peristaltic pump flow velocity setting apparatus (92), the second peristaltic pump flow speed controller (94);
Input the first flow rate information to the first peristaltic pump flow speed controller (93) by the first peristaltic pump flow velocity setting apparatus (91), the first peristaltic pump flow speed controller (93) is controlled the first peristaltic pump (3) flow velocity; Input the second flow rate information to the second peristaltic pump flow speed controller (94) by the second peristaltic pump flow velocity setting apparatus (92), the second peristaltic pump flow speed controller (94) is controlled the second peristaltic pump (4) flow velocity.
4. the online immobilon-p extraction equipment of Portable field according to claim 2, is characterized in that, the diameter of described the second column cavity is 48mm, and the diameter of described solid phase extraction film is 47mm.
5. according to claim 1,2, the online immobilon-p extraction equipment of the described Portable field of 4 any one, it is characterized in that the upper filtration aid of placing of the supporting network of the first support member (215).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320477590.8U CN203385613U (en) | 2013-08-06 | 2013-08-06 | Portable type field online solid-phase membrane extraction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320477590.8U CN203385613U (en) | 2013-08-06 | 2013-08-06 | Portable type field online solid-phase membrane extraction device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984587A (en) * | 2015-07-10 | 2015-10-21 | 国家环境分析测试中心 | Portable wild water solid-phase extraction and enrichment device |
| CN103439171B (en) * | 2013-08-06 | 2015-11-18 | 李晓亚 | The online solid phase film extraction device of a kind of Portable field |
| CN105784455A (en) * | 2016-05-16 | 2016-07-20 | 张起香 | Extraction structure and liquid pretreatment device |
-
2013
- 2013-08-06 CN CN201320477590.8U patent/CN203385613U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439171B (en) * | 2013-08-06 | 2015-11-18 | 李晓亚 | The online solid phase film extraction device of a kind of Portable field |
| CN104984587A (en) * | 2015-07-10 | 2015-10-21 | 国家环境分析测试中心 | Portable wild water solid-phase extraction and enrichment device |
| CN105784455A (en) * | 2016-05-16 | 2016-07-20 | 张起香 | Extraction structure and liquid pretreatment device |
| CN105784455B (en) * | 2016-05-16 | 2018-08-17 | 张起香 | Extract structure and liquid preprocessing device |
| US10150065B2 (en) | 2016-05-16 | 2018-12-11 | Tianjin Anbang Jinahe Technology Co., Ltd. | Extraction structure, extraction module, and liquid pretreatment device |
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Granted publication date: 20140108 Effective date of abandoning: 20151118 |
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