CN108507830A - A kind of Passive sampler and the method for sampling for nonpolar organic pollutants acquisition in sewer - Google Patents
A kind of Passive sampler and the method for sampling for nonpolar organic pollutants acquisition in sewer Download PDFInfo
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- CN108507830A CN108507830A CN201810776519.7A CN201810776519A CN108507830A CN 108507830 A CN108507830 A CN 108507830A CN 201810776519 A CN201810776519 A CN 201810776519A CN 108507830 A CN108507830 A CN 108507830A
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- carrier shell
- filter bag
- passive sampler
- organic pollutants
- nonpolar organic
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- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 16
- 238000005070 sampling Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003463 adsorbent Substances 0.000 claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 239000002033 PVDF binder Substances 0.000 claims abstract description 12
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000010865 sewage Substances 0.000 claims description 30
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000003480 eluent Substances 0.000 claims description 9
- 229920006221 acetate fiber Polymers 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 229920003053 polystyrene-divinylbenzene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 208000004141 microcephaly Diseases 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 3
- 239000012498 ultrapure water Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 11
- 231100000719 pollutant Toxicity 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- USSIQXCVUWKGNF-UHFFFAOYSA-N 6-(dimethylamino)-4,4-diphenylheptan-3-one Chemical compound C=1C=CC=CC=1C(CC(C)N(C)C)(C(=O)CC)C1=CC=CC=C1 USSIQXCVUWKGNF-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 229960001797 methadone Drugs 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- AOJJSUZBOXZQNB-TZSSRYMLSA-N Doxorubicin Chemical compound O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@H](O)[C@H](C)O1 AOJJSUZBOXZQNB-TZSSRYMLSA-N 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- PQIOSYKVBBWRRI-UHFFFAOYSA-N methylphosphonyl difluoride Chemical group CP(F)(F)=O PQIOSYKVBBWRRI-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229940009456 adriamycin Drugs 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001408 amides Chemical group 0.000 description 1
- 150000001412 amines Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of Passive samplers and the method for sampling for nonpolar organic pollutants in sewer, the Passive sampler includes carrier shell, the carrier shell is the small spindle-type in both ends broad in the middle, including upper and lower two separate structures, the top and bottom end of the carrier shell are plane, and it is evenly arranged multiple circular holes respectively in the plane of top and bottom end, a piece of polyvinylidene fluoride microporous barrier is stained on the inner wall of the carrier shell upper and lower ends respectively, and it is provided with filter bag between two panels polyvinylidene fluoride microporous barrier, adsorbent is filled in the filter bag.The Passive sampler of the present invention, carrier shell are designed using separate structure, easy to disassemble and installation, by double-filtration and absorption, the pollutant of enough detection limits can be enriched in 12 hours, by the amount for increasing sorbing material, the sampling time can also be extended, be suitable for long term monitoring.
Description
Technical field
The invention belongs to environmental pollution acquisition technique fields, and in particular to one kind is for nonpolar organic contamination in sewer
The Passive sampler of object acquisition and the method for sampling using the Passive sampler.
Background technology
The sizable part of pollutant in environment water comes from sanitary sewage, in city, due to people's daily life
Used various chemicals, including cosmetics, cosmetology articles for use, detergent, detergent, drug etc., all can be with life
Sewage is discharged into sewage network, after sewage treatment plant, into surface water body.The conventional treatment work of current sewage treatment plant
Skill can not completely remove these chemical substances, to an important sources of environmental pollution.Therefore, for city dirt
The acquisition of water sample is an important technological problems of environmental monitoring.Traditional method of sampling, using automatic sampler or
Person samples manually, can not long term monitoring need the sample quantity arranged simultaneously because the node of municipal sewage pipe network
Greatly, conventional method needs the on duty of personnel, and human cost is high, performance difficulty.
In the common organic pollution of sanitary sewage, some be belong to nonpolar organic compound, such as
Drugs such as surfactant, polyamide-based coating, adriamycin in polycyclic aromatic hydrocarbon, detergent etc..Nonpolarity in environment is organic
Compound usually contains the groups such as aryl, ester, ether, amine, amide, in water quality sampling, is passively adopted with traditional hydrophilic material
Sample device, it is difficult to which high efficiency completes sample collection, therefore the present invention specially develops one kind and being suitable for nonpolar organic pollutants acquisition
Passive sampler, fill up a blank of passive sampling technology.
Invention content
In view of the deficiencies of the prior art, the purpose of the present invention is to provide one kind for nonpolar organic contamination in sewer
The Passive sampler and the method for sampling of object acquisition, using the Fick's law of diffusion of pollutant as theoretical foundation, to realize that nonpolarity has
The high efficiency of machine pollutant sampling.
To achieve the above object, the technical solution adopted by the present invention is：One kind is for nonpolar organic contamination in sewer
The Passive sampler of object, including carrier shell, the carrier shell design for upper and lower two panels separate structure, and the two can be detained mutually
Tightly, the top and bottom end of the carrier shell are plane, and have been evenly arranged multiple circles respectively in the plane of top and bottom end
Hole is stained with a piece of polyvinylidene fluoride microporous barrier on the inner wall of the carrier shell upper and lower ends, for further going respectively
Except the fine particle impurity in sewage, the aperture of the polyvinylidene fluoride microporous barrier is 0.45 micron, and two panels gathers inclined difluoro
It is provided with filter bag between ethylene microporous barrier, adsorbent is filled in the filter bag, for the organic dirt of hydrophobicity in absorption effluent
Contaminate object.
Further, two separate structures up and down of the carrier shell are using threaded connection.
Further, a diameter of 5cm of carrier shell centre major part, a diameter of 3.5cm of both ends microcephaly are highly
3cm is specifically made of polytetrafluoroethylene (PTFE), convenient for being put into sewer, and takes into account the capacity of open ended sorbing material.
Further, the circular hole of 24 a diameter of 2mm is evenly arranged in the plane of the housing top end and bottom end respectively,
For the acquisition of sewage, while filtering out the large granular impurity in sewage.
Further, the filter bag selects acetate fiber to be made, and filter bag size is the cm of 4cm × 3, is filled in the filter bag
Adsorbent be non-polar absorbent material, specially polystyrene-divinylbenzene adsorbs resin, and the weight of adsorbent is
0.1g。
Using the Passive sampler, the present invention also provides a kind of technical solutions：One kind is organic for nonpolarity in sewer
The method of sampling of pollutant, includes the following steps：
（1）The polystyrene-divinylbenzene for weighing 0.1g adsorbs resin as adsorbent, is placed in the filter bag of acetate fiber；
（2）The filter bag for installing adsorbent is sealed in the carrier shell for being placed in sampler, and by two parts above and below carrier shell
Fastening, then be positioned in sewage conduct；
（3）It is placed in sewage conduct at least 12 hours, Passive sampler is made to be come into full contact with sewage；
（4）After 12 hours, Passive sampler is taken out, opens carrier shell, filter bag is taken out, is placed after cleaning surface with ultra-pure water
In clean small beaker；
（5）The hydrochloric acid eluent of 0.08 mol/L is added into small beaker, completely submerges filter bag；
（6）Beaker mouth is wrapped with aluminium foil, small beaker is placed in supersonic cleaning machine, extraction 20 minutes is carried out using ultrasound；
（7）Filter bag is taken out, is put into another clean small beaker, the methanol of chromatographically pure is added, then be positioned over supersonic cleaning machine
In, carry out extraction 10 minutes using ultrasound；
（8）Eluent after extracting twice is sufficiently mixed, stands 3 minutes, it is accurate to draw upper layer eluent 2mL, with 0.2 μm
The centrifugal filtration tube in aperture filters, and takes filtered liquid, carries out experimental analysis.
Compared with prior art, the beneficial effects of the invention are as follows：The Passive sampler of the present invention, carrier shell is using seperated
Structure design, easy to disassemble and installation, and the top of carrier shell and bottom end are plane, and multiple circular holes are provided in plane,
Entered inside carrier shell by circular hole convenient for sewage, using the filtering of polyvinylidene fluoride microporous barrier, and gathers inclined difluoro second
Alkene microporous barrier can also further remove the fine particle impurity in sewage, until adsorbent of the target contaminant in filter bag is rich
Collection；In addition, filter bag selects acetate fiber material to be made, because acetate fiber is stablized in sewage, and have with most of hydrophobicity
Machine pollutant does not react, while having preferable water penetration, is conducive to water pollutant and penetrates filter bag, in sorbing material
Enrichment.In addition, the Passive sampler of the present invention is convenient for being placed on the front end of sewage conduct, conveniently pick and place.By double-filtration and suction
It is attached, the pollutant of enough detection limits can be enriched in 12 hours, by increasing the amount of sorbing material, when can also extend sampling
Between, it is suitable for long term monitoring.
Description of the drawings
Fig. 1 is the carrier shell external structure of the present invention；
Fig. 2 is the carrier shell end face structure figure of the present invention；
Fig. 3 is the internal structure chart of the present invention；
In figure：1- carrier shells, 2- circular holes, 3- polyvinylidene fluoride microporous barriers, 4- filter bags.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.It is described below for disclosing this
Invention is so that those skilled in the art can realize the present invention.Preferred embodiment in being described below is only used as illustrating, this field
Technical staff is contemplated that other obvious modifications.
In the present invention, it is non-polar adsorbent that embodiment, which selects stryrene divinyl absorption resin, using methadone as target
Pollutant.Wherein, stryrene divinyl absorption resin is non-polar adsorbent, and purchase is convenient, at low cost.Methadone is city
A kind of novel organic pollution, has hydrophobic character, the target contaminant of the present embodiment is selected as, to verify in sanitary sewage
Collection effect and acquisition method of the Passive sampler of the present invention to the pollutant.
As shown in Figs. 1-3：A kind of Passive sampler for nonpolar organic pollutants in sewer, including carrier shell
1, the carrier shell 1 designs for upper and lower two panels separate structure, and the two can be fastened mutually, using being threadedly coupled outside the carrier
The top and bottom end of shell 1 are plane, and have been evenly arranged multiple circular holes 2, the carrier in the plane of top and bottom end respectively
A piece of polyvinylidene fluoride microporous barrier 3 is stained on the inner wall of 1 upper and lower ends of shell respectively, for further removing in sewage
The aperture of fine particle impurity, the polyvinylidene fluoride microporous barrier 3 is 0.45 micron, and two panels polyvinylidene fluoride microporous barrier
It is provided with filter bag 4 between 3, adsorbent is filled in the filter bag 4, for the hydrophobic organic pollutant in absorption effluent.
Specifically, a diameter of 5cm of 1 intermediate major part of the carrier shell, a diameter of 3.5cm of both ends microcephaly are highly
3cm is specifically made of polytetrafluoroethylene (PTFE), convenient for being put into sewer, and takes into account the capacity of open ended sorbing material.The carrier
The circular hole of 24 a diameter of 2mm is evenly arranged in the plane of 1 top of shell and bottom end respectively, is used for the acquisition of sewage, simultaneously
Filter out the large granular impurity in sewage.The filter bag 4 selects acetate fiber to be made, and 4 size of filter bag is the cm of 4cm × 3, described
The adsorbent filled in filter bag 4 is non-polar absorbent material, and specially polystyrene-divinylbenzene adsorbs resin, and adsorbent
Weight be 0.1g.
Using the Passive sampler, the present invention also provides a kind of technical solutions：One kind is organic for nonpolarity in sewer
The method of sampling of pollutant, includes the following steps：
（1）The polystyrene-divinylbenzene for weighing 0.1g adsorbs resin as adsorbent, is placed in the filter bag 4 of acetate fiber；
（2）The filter bag for installing adsorbent is sealed in the carrier shell 1 for being placed in sampler, and by carrier shell about 1 two
Divide fastening, then is positioned in sewage conduct；
（3）It is placed in sewage conduct at least 12 hours, Passive sampler is made to be come into full contact with sewage；
（4）After 12 hours, Passive sampler is taken out, opens carrier shell 1, filter bag 4 is taken out, is put after cleaning surface with ultra-pure water
It is placed in clean small beaker；
（5）The hydrochloric acid eluent of 0.08 mol/L is added into small beaker, completely submerges filter bag；
（6）Beaker mouth is wrapped with aluminium foil, small beaker is placed in supersonic cleaning machine, extraction 20 minutes is carried out using ultrasound；
（7）Filter bag is taken out, is put into another clean small beaker, the methanol of chromatographically pure is added, then be positioned over supersonic cleaning machine
In, carry out extraction 10 minutes using ultrasound；
（8）Eluent after extracting twice is sufficiently mixed, stands 3 minutes, it is accurate to draw upper layer eluent 2mL, with 0.2 μm
The centrifugal filtration tube in aperture filters, and takes filtered liquid, carries out experimental analysis.
Confirmatory experiment has been carried out to the present invention.Use methadone as representative target contaminant, in simulation sewage conduct
Middle carry out confirmatory experiment, tests 5 batches of Passive samplers, as a result shows altogether：Sewage containing 30 microgram methadones is slowly noted
Entering pipeline, stops 12 hours in the duct, the amount of the methadone finally eluted from adsorbent is 18.5 ± 2.1 micrograms,
Absorption-elution efficiency is 55-69%, and 12 hours adsorbances fully achieve the quantitative requirement of experiment detection.
It is target contaminant that micro methadone is used in this confirmatory experiment, under practical situations, sewage and earth's surface
The content of other pollutants can be far above this confirmatory experiment in water, while the time sampled in practical applications can be longer, rich
The amount of collection also bigger.Therefore, this Passive sampler in practical applications, can meet and be adopted to nonpolar organic pollutants in water
Collection demand.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and its
Equivalent defines.
Claims (8)
1. a kind of Passive sampler for nonpolar organic pollutants in sewer, including carrier shell（1）, feature exists
In：The carrier shell（1）It can mutually be fastened for the small spindle-type in both ends broad in the middle, including upper and lower two separate structures, the two,
The carrier shell（1）Top and bottom end be plane, and be evenly arranged multiple circles respectively in the plane of top and bottom end
Hole（2）, the carrier shell（1）A piece of polyvinylidene fluoride microporous barrier is stained on the inner wall of upper and lower ends respectively（3）, described
Polyvinylidene fluoride microporous barrier（3）Aperture be 0.45 micron, and two panels polyvinylidene fluoride microporous barrier（3）Between be provided with filter
Bag（4）, the filter bag（4）It is interior to be filled with adsorbent, for the hydrophobic organic pollutant in absorption effluent.
2. a kind of Passive sampler for nonpolar organic pollutants in sewer according to claim 1, feature
It is：The carrier shell（1）Two separate structures up and down using being threadedly coupled.
3. a kind of Passive sampler for nonpolar organic pollutants in sewer according to claim 2, feature
It is：The carrier shell（1）A diameter of 5cm of intermediate major part, a diameter of 3.5cm of both ends microcephaly are highly 3cm.
4. a kind of Passive sampler for nonpolar organic pollutants in sewer according to claim 3, feature
It is：The carrier shell（1）The circular hole of 24 a diameter of 2mm is evenly arranged in the plane of top and bottom end respectively（2）.
5. a kind of Passive sampler for nonpolar organic pollutants in sewer according to claim 4, feature
It is：The carrier shell（1）Specifically it is made of polytetrafluoroethylene (PTFE).
6. a kind of Passive sampler for nonpolar organic pollutants in sewer according to claim 5, feature
It is：The filter bag（4）Acetate fiber is selected to be made, filter bag（4）Size be the cm of 4cm × 3.
7. a kind of Passive sampler for nonpolar organic pollutants in sewer according to claim 6, feature
It is：The filter bag（4）The adsorbent of middle filling is non-polar absorbent material, specially polystyrene-divinylbenzene absorption tree
Fat, and the weight of adsorbent is 0.1g.
8. a kind of method of sampling for nonpolar organic pollutants in sewer includes the following steps：
（1）The polystyrene-divinylbenzene for weighing 0.1g adsorbs resin as adsorbent, is placed in the filter bag of acetate fiber（4）In；
（2）The filter bag for installing adsorbent is sealed to the carrier shell for being placed in sampler（1）It is interior, and by carrier shell（1）Up and down
Two parts fasten, then are positioned in sewage conduct；
（3）It is placed in sewage conduct at least 12 hours, Passive sampler is made to be come into full contact with sewage；
（4）After 12 hours, Passive sampler is taken out, opens carrier shell（1）, take out filter bag（4）, surface is cleaned with ultra-pure water
It is positioned over afterwards in clean small beaker；
（5）The hydrochloric acid eluent of 0.08 mol/L is added into small beaker, completely submerges filter bag；
（6）Beaker mouth is wrapped with aluminium foil, small beaker is placed in supersonic cleaning machine, extraction 20 minutes is carried out using ultrasound；
（7）Filter bag is taken out, is put into another clean small beaker, the methanol of chromatographically pure is added, then be positioned over supersonic cleaning machine
In, carry out extraction 10 minutes using ultrasound；
（8）Eluent after extracting twice is sufficiently mixed, stands 3 minutes, it is accurate to draw upper layer eluent 2mL, with 0.2 μm
The centrifugal filtration tube in aperture filters, and takes filtered liquid, carries out experimental analysis.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810776519.7A CN108507830B (en) | 2018-07-16 | 2018-07-16 | Passive sampler and sampling method for collecting nonpolar organic pollutants in sewer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810776519.7A CN108507830B (en) | 2018-07-16 | 2018-07-16 | Passive sampler and sampling method for collecting nonpolar organic pollutants in sewer |
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| CN108507830B CN108507830B (en) | 2024-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508475A (en) * | 2022-11-01 | 2022-12-23 | 未名环境分子诊断(广东)有限公司 | Method for detecting content of diphenoxylate in sewage |
| CN117129273A (en) * | 2023-10-24 | 2023-11-28 | 扬州市疾病预防控制中心 | Sewage passive sampling device and sampling method thereof |
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2018
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|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508475A (en) * | 2022-11-01 | 2022-12-23 | 未名环境分子诊断(广东)有限公司 | Method for detecting content of diphenoxylate in sewage |
| CN117129273A (en) * | 2023-10-24 | 2023-11-28 | 扬州市疾病预防控制中心 | Sewage passive sampling device and sampling method thereof |
| CN117129273B (en) * | 2023-10-24 | 2024-03-01 | 扬州市疾病预防控制中心 | Sewage passive sampling device and sampling method thereof |
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