CN102252869A - Passive sampler for organic pollutants in sediments based on ionic liquid - Google Patents
Passive sampler for organic pollutants in sediments based on ionic liquid Download PDFInfo
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- CN102252869A CN102252869A CN2011100609798A CN201110060979A CN102252869A CN 102252869 A CN102252869 A CN 102252869A CN 2011100609798 A CN2011100609798 A CN 2011100609798A CN 201110060979 A CN201110060979 A CN 201110060979A CN 102252869 A CN102252869 A CN 102252869A
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Abstract
The invention discloses a new passive sampling device which uses an ionic liquid as a receiving phase and can be used for monitoring the concentration of organic pollutants in sediments. The ionic liquid is filled in a low-density polyethylene film pipe; the film pipe is fixed by an organic glass frame with a wedge-shaped sharp point; the device can be vertically inserted into the sediments of a water body; and the pollutants in the interstitial water of the sediments are passively collected. The ionic liquid has designability, and different types of ionic liquids can be selected according to the difference of monitored target organic pollutants, thereby improving the bearing capability of a receiving phase on target pollutants. After passive sampling is completed, the ionic liquid of the receiving phase can be directly dissolved in an organic solvent with low dosage; and then, instrument analysis is carried out, thereby reducing the consumption of volatile organic solvents in the elution loop of the receiving phase. An analog experiment result indicates that a logarithm value of the enriched concentration of target pollutants in the sampling device and a logarithm value of the concentration of the pollutants in the sediments have better relativity when the sampling is completed.
Description
Technical field
The present invention relates to a kind of with ionic liquid as accepting phase, in order to gather the passive sampling new equipment that there is level in organic contaminant in the monitoring sediment.
Background technology
Sediment is organic contaminant in the water environment " remittance ", and most organic contaminants all can finally enter in the sediment in the natural water body.And when environment changed, the part pollutant may reenter water again, formed secondary pollution.Therefore, to the environmental monitoring work of organic contaminant in the sediment, to ensureing human health and safeguarding that environmental ecology all has very important significance.
Initiatively there are many limiting factors in the sampling monitoring method, the transient state that for example, gather that volume of water sample is limited, cycles of concentration is not high, the removal complex steps of interfering material, expense costliness, analysis result often can only be represented organic contaminant in the water environment.Therefore, but the passive sampling technology of the pollutant IC in the surrounding medium in the continuous acquisition sampling period is widely used in the monitoring and environmental process research of organic micro-pollutant in the environment.Yet, widely used acceptance mostly is neutral lipoid (at nonpolar organic matter) or exchange resin (at polar organic matter) mutually in the organic contaminant passive sampling technology at present, often needs to use a large amount of volatile organic solvents bigger to environmental hazard in its pre-treatment process after sampling; And the passive sampling technology that is used for the monitoring of sediment organic contaminant passive sampling is still waiting exploitation.
Ionic liquid is meant room temperature or is bordering on and be the salt of liquid under the room temperature (being lower than 100 ℃), is made of the organic cation of nitrogenous, phosphorus and inorganic or organic anion usually.Some unique physicochemical property that it has, for example: vapor pressure is minimum, the many organism of solubilized, inorganics and macromolecular material; Have thermal stability preferably, not flammable; Fusing point, viscosity, density and the dissolubility in water and other organic solvent etc. that can regulate it by the composition of regulating the yin, yang ion.These unique character make it might replace conventional organic solvents fully in a lot of fields, become safety, eco-friendly novel dissolvent.Because ionic liquid has " can design " property of above-mentioned eco-friendly characteristics and structure, make it have the possibility that is applied to the monitoring of sediment Semi-polarity organic pollutant enrichment.At present, ionic liquid by successful Application in the liquid-liquid extraction of materials such as polar/non-polar organism, metallic ion research; Also there is a small amount of employing ionic liquid that the research work that each pollutant in the soils extracts is delivered.
Summary of the invention
It is the passive sampling device of accepting phase with ionic liquid that the present invention aims to provide a kind of, and it can carry out continuous acquisition to the organic contaminant in the sediment interstitial water, thus the level of pollution of this pollutant in the reflection sediment.This technology is easy, economical, efficient, and consumes less to organic solvent.
Passive sampling apparatus structure provided by the invention is as follows: passive sampling device integral body is dull and stereotyped vertical insertion type, is made up of the organic glass fixed frame two parts of filling ion liquid low density polyethylene films pipe and band wedge shape tip.Organic glass fixed frame main body is that two block lengths are 120mm, wide hollow space is a sample window in the plate for 40mm, thickness are the poly (methyl methacrylate) plate of 3mm, sample window long for 70mm, wide be 20mm, i.e. useful area 14cm
2, the wedge shape tip bottom surface of fixed frame front end is the rectangle of long 40mm, wide 9mm, the high 16mm of tip.Wedge shape tip material is an organic glass, with glue and fixed frame main body bonding (as shown in Figure 1).Taking by weighing the 100mg ionic liquid, to be filled into length be that 80mm, width are in the low density polyethylene films pipe of 25mm, with the heat-sealing instrument each 5mm of film pipe two ends partly carried out hot-press sealed, accepts phase (as shown in Figure 2) with this as the passive sampling device.To accept phase film pipe and place between two organic glass fixed frames, the film pipe be fixed by stainless steel packing ring, screw and nut.
This passive sampling device can directly insert and carry out passive sampling monitoring in the water body deposit, according to the difference as the target compound of monitoring target, can select to fill ionic liquid of different nature as accepting phase.The cycle of monitoring according to actual needs, the character of target compound and level of pollution and decide.
The pre-treating method of passive sampling gained sample is: after sampling thief reclaims, with clean absorbent cotton the film tube outer surface is dried.Cut off the film pipe, ionic liquid is transferred to test tube, and with 5ml acetonitrile gradation flushing membrane pipe internal surface, washing fluid also is transferred in the test tube, and invisible spectro acetonitrile nitrogen is blown to 1ml, can adopt instrument that the pollutant in the sample is carried out analyzing and testing.
Prove through laboratory study, use the passive sampling apparatus that ionic liquid 1-cetyl-3-methylimidazole hexafluorophosphate is set up, can realize effective collection (Fig. 3) 2 kinds of incretion interferent class organic contaminants (17 beta estradiols and bisphenol-A) in the polluted river sediment of Tianjin; Sampling thief is positioned over 4 respectively to be picked up from the polluted river sediment that diverse location, level of pollution have nothing in common with each other, the logarithm value of target contaminant bisphenol-A and 17 beta estradiol concentration in the sampling thief after 7 days has correlativity (Fig. 4 and Fig. 5) preferably with the logarithm value of pollutant levels in the sediment that extracts test through soxhlet extraction.
Description of drawings
The organic glass fixed frame synoptic diagram of Fig. 1 band wedge shape tip
Fig. 2 fills ion liquid low density polyethylene films pipe and accepts the phase synoptic diagram
Fig. 3 based on ion liquid passive sampling apparatus to 2 kinds of incretion interferents---the static enrichment curve of the passive sampling of bisphenol-A and 17 beta estradiols
Fig. 4 is based on the passive sampling apparatus of ionic liquid 1-cetyl-3-methylimidazole hexafluorophosphate enrichment concentration logarithm value (the log C on the 7th to bisphenol-A in 4 diverse location sediments of Tianjin polluted river
The P_ bisphenol-A) with sediment in bisphenol A concentration logarithm value (log C
The S_ bisphenol-A) linear relationship chart
Fig. 5 is based on the passive sampling apparatus of ionic liquid 1-cetyl-3-methylimidazole hexafluorophosphate enrichment concentration logarithm value (the log C on the 7th to 17 beta estradiols in 4 diverse location sediments of Tianjin polluted river
The P_ estradiol) with sediment in 17 beta estradiol concentration logarithm value (log C
The S_ estradiol) linear relationship chart
Claims (5)
- The present invention for a kind of with ionic liquid as the passive sampling apparatus of accepting phase, this device is monitored organic contaminant in the sediment in order to enrichment.
- 2. the integral body of the passive sampling device in the right 1 is dull and stereotyped vertical insertion type, forms with organic glass fixed frame 2 parts that have the wedge shape tip by filling ion liquid semi-permeable diaphragm pipe.After filling ionic liquid in the semi-permeable diaphragm pipe, two ends place between two organic glass fixed frames through hot-press sealed, by screw and nut the film pipe are fixed.
- 3. 2 organic glass fixed frame main bodys in the right 2 are long is 120mm, and wide is 40mm, and thickness is 3mm, the long 70mm of hollow space, wide 20mm, efficiently sampling area 14cm 2, wedge shape tip bottom surface is the rectangle of long 40mm, wide 9mm, the high 16mm of tip.
- 4. the semi-permeable diaphragm pipe in the right 2 adopts the low density polyethylene films pipe, the wide 25mm of film pipe, and the film length of tube that each sampling apparatus uses is 80mm, evenly loads ionic liquid 100mg in the film pipe, the ratio of sampling thief effective surface area and ionic liquid quality is 140cm 2/ g.
- 5. the ionic liquid in the right 2 is that kation is the imidazole type ion liquid of imidazoles or substituted imidazole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100609798A CN102252869A (en) | 2011-03-15 | 2011-03-15 | Passive sampler for organic pollutants in sediments based on ionic liquid |
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| CN2011100609798A CN102252869A (en) | 2011-03-15 | 2011-03-15 | Passive sampler for organic pollutants in sediments based on ionic liquid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729878A (en) * | 2013-12-24 | 2015-06-24 | 南开大学 | Novel passive water body sampling technique based on supported ionic liquid |
| CN105241723A (en) * | 2015-10-27 | 2016-01-13 | 中国科学院生态环境研究中心 | Adsorption rod passive sampler for measuring concentrations of water pollutants |
| CN107219344A (en) * | 2017-06-02 | 2017-09-29 | 南开大学 | A kind of method for predicting PAHs in soil biological effectiveness |
| CN108507830A (en) * | 2018-07-16 | 2018-09-07 | 未名环境分子诊断（常熟）有限公司 | A kind of Passive sampler and the method for sampling for nonpolar organic pollutants acquisition in sewer |
| CN110621973A (en) * | 2017-05-19 | 2019-12-27 | 乔治洛德方法研究和开发液化空气有限公司 | Method for analyzing a cryogenic liquid for trace contaminants |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804575A (en) * | 2005-12-27 | 2006-07-19 | 南开大学 | Semipermeable membrane for sampling organic contaminant in enriched water environment |
| CN101038249A (en) * | 2006-03-14 | 2007-09-19 | 中国科学院过程工程研究所 | Method and device for measuring absorbing capacity of organic solvent volatile gas in ion liquid |
-
2011
- 2011-03-15 CN CN2011100609798A patent/CN102252869A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804575A (en) * | 2005-12-27 | 2006-07-19 | 南开大学 | Semipermeable membrane for sampling organic contaminant in enriched water environment |
| CN101038249A (en) * | 2006-03-14 | 2007-09-19 | 中国科学院过程工程研究所 | Method and device for measuring absorbing capacity of organic solvent volatile gas in ion liquid |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729878A (en) * | 2013-12-24 | 2015-06-24 | 南开大学 | Novel passive water body sampling technique based on supported ionic liquid |
| CN105241723A (en) * | 2015-10-27 | 2016-01-13 | 中国科学院生态环境研究中心 | Adsorption rod passive sampler for measuring concentrations of water pollutants |
| CN110621973A (en) * | 2017-05-19 | 2019-12-27 | 乔治洛德方法研究和开发液化空气有限公司 | Method for analyzing a cryogenic liquid for trace contaminants |
| CN107219344A (en) * | 2017-06-02 | 2017-09-29 | 南开大学 | A kind of method for predicting PAHs in soil biological effectiveness |
| CN108507830A (en) * | 2018-07-16 | 2018-09-07 | 未名环境分子诊断（常熟）有限公司 | A kind of Passive sampler and the method for sampling for nonpolar organic pollutants acquisition in sewer |
| CN108507830B (en) * | 2018-07-16 | 2024-03-26 | 未名环境分子诊断（常熟）有限公司 | Passive sampler and sampling method for collecting nonpolar organic pollutants in sewer |
| 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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Application publication date: 20111123 |