CN106986406A - A kind of minimizing technology of pair of rubigan trichloroethanes - Google Patents
A kind of minimizing technology of pair of rubigan trichloroethanes Download PDFInfo
- Publication number
- CN106986406A CN106986406A CN201710247118.8A CN201710247118A CN106986406A CN 106986406 A CN106986406 A CN 106986406A CN 201710247118 A CN201710247118 A CN 201710247118A CN 106986406 A CN106986406 A CN 106986406A
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- Prior art keywords
- organic solvent
- silicone polymer
- dimethyl silicone
- adsorbed
- porous
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/306—Pesticides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The minimizing technology of a kind of pair of rubigan trichloroethanes, comprises the following steps：The first step：Porous dimethyl silicone polymer is immersed the porous dimethyl silicone polymer that organic solvent obtains being adsorbed with organic solvent is inserted in the hole for making the porous dimethyl silicone polymer in organic solvent, the organic solvent is toluene, n-hexane or chloroform；Second step：The porous dimethyl silicone polymer for being adsorbed with organic solvent is put into pending water, stirring makes double rubigan trichloroethanes in water be adsorbed to the porous dimethyl silicone polymer for being adsorbed with organic solvent.The present invention establishes DDT micro in porous PDMS liquid phases restraint system enrichment water sample, establishes methods of the DDT in efficient, fast enriching water to remove DDT.
Description
Technical field
The invention belongs to water-treatment technology field, it is related to the minimizing technology of a kind of pair of rubigan trichloroethanes.
Background technology
DDT Chinese name DDT, chemical name is double rubigan trichloroethanes, is a kind of widely used organochlorine agriculture
Medicine.It is a kind of odorless, tasteless white crystal, water insoluble, is dissolved in most organic solvent, grease and fat, is especially held
Enrichment effect is easily produced in the ecosystem.DDT has physiological effect and " three cause " effect, can be to ecological environment and health
There is extremely serious injury, DDT and similar compound DDD, DDE are 20 kinds be classified as by U.S. EPA in priority pollutant
3 kinds therein of agricultural chemicals, while being also the international first batch of persistence organic pollutant of pops pacts.Although in the 1950s, very
Many countries all start that DDT has been started to be prevented or restricted from using, but malaria, dengue fever, yellow fever etc. are in worldwide volume
Soil comes again, the World Health Organization（WHO）Declaration reactivates DDT to tackle this problem.Due to phenyl ring and substituent chlorine atom
Structure, the anti-light solutions of DDT class compounds, chemical breakdown and biological degradability ability are superpower.Traditional physics and chemical method
Less desirable always to DDT treatment effect, biological adsorption is to solve DDT to pollute one of most potential method with degraded,
But biological high to compound selectivity, time-consuming, biological prosthetic especially when the content of the DDT in water sample is very low
Effect is relatively more almost.
The content of the invention
Present invention aims at the minimizing technology for providing a kind of pair of rubigan trichloroethanes.
To achieve the above object, the technical scheme that provides of the present invention is：A kind of removal side of pair of rubigan trichloroethanes
Method, comprises the following steps：
The first step：Porous dimethyl silicone polymer is immersed to be made in the hole of the porous dimethyl silicone polymer in organic solvent
The porous dimethyl silicone polymer that organic solvent obtains being adsorbed with organic solvent is inserted, the organic solvent is toluene, n-hexane
Or chloroform；
Second step：The porous dimethyl silicone polymer for being adsorbed with organic solvent is put into pending water, stirring makes water
In double rubigan trichloroethanes be adsorbed to the porous dimethyl silicone polymer for being adsorbed with organic solvent.
It is preferred that technical scheme be：The organic solvent is n-hexane.
It is preferred that technical scheme be：The time of second step processing is more than or equal to 2.5 hours.
It is preferred that technical scheme be：Sodium chloride is added into the water, the addition of the sodium chloride is more than or equal to water
Quality 20%.
Because above-mentioned technical proposal is used, the present invention this have the advantage that compared with prior art：
The present invention establishes DDT micro in porous PDMS liquid phases restraint system enrichment water sample, establishes efficient, fast enriching water
In methods of the DDT to remove DDT.
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Embodiment one：A kind of minimizing technology of pair of rubigan trichloroethanes
The minimizing technology of a kind of pair of rubigan trichloroethanes, comprises the following steps：
The first step：Porous dimethyl silicone polymer is immersed to be made in the hole of the porous dimethyl silicone polymer in organic solvent
The porous dimethyl silicone polymer that organic solvent obtains being adsorbed with organic solvent is inserted, the organic solvent is toluene；
Second step：The porous dimethyl silicone polymer for being adsorbed with organic solvent is put into pending water, stirring makes water
In double rubigan trichloroethanes be adsorbed to the porous dimethyl silicone polymer for being adsorbed with organic solvent.
It is preferred embodiment：The time of second step processing is 3 hours.
It is preferred embodiment：Sodium chloride is added into the water, the addition of the sodium chloride is the quality of water
20%。
It is enriched with after a period of time, takes out porous PDMS material, after extruding, is put into centrifuge tube, 4000r/min centrifuges 5 points
Clock, takes organic solvent, and porous PDMS can be recycled.As a result show：The rate of recovery of toluene is 23.5%.
Embodiment two：A kind of minimizing technology of pair of rubigan trichloroethanes
The minimizing technology of a kind of pair of rubigan trichloroethanes, comprises the following steps：
The first step：Porous dimethyl silicone polymer is immersed to be made in the hole of the porous dimethyl silicone polymer in organic solvent
The porous dimethyl silicone polymer that organic solvent obtains being adsorbed with organic solvent is inserted, the organic solvent is n-hexane；
Second step：The porous dimethyl silicone polymer for being adsorbed with organic solvent is put into pending water, stirring makes water
In double rubigan trichloroethanes be adsorbed to the porous dimethyl silicone polymer for being adsorbed with organic solvent.
It is preferred embodiment：The time of second step processing is 2.5 hours.
It is preferred embodiment：Sodium chloride is added into the water, the addition of the sodium chloride is the quality of water
25%。
As a result show：The rate of recovery of n-hexane is 108.32%.
As a result show：Because NaCl is a kind of polarity very strong compound, the polarity of solution can be increased, so as to allow DDT to exist
The solubility reduction of the aqueous solution.When the concentration of the NaCl in the aqueous solution is continuously increased, the Van der Waals force of DDT and NaCl ion concentrations
Increase, reduces transmission rate between the two, therefore downward trend is presented in bioaccumulation efficiency after 20%.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (4)
1. the minimizing technology of a kind of pair of rubigan trichloroethanes, it is characterised in that：Comprise the following steps：
The first step：Porous dimethyl silicone polymer is immersed to be made in the hole of the porous dimethyl silicone polymer in organic solvent
The porous dimethyl silicone polymer that organic solvent obtains being adsorbed with organic solvent is inserted, the organic solvent is toluene, n-hexane
Or chloroform；
Second step：The porous dimethyl silicone polymer for being adsorbed with organic solvent is put into pending water, stirring makes water
In double rubigan trichloroethanes be adsorbed to the porous dimethyl silicone polymer for being adsorbed with organic solvent.
2. the minimizing technology of according to claim 1 pair of rubigan trichloroethanes, it is characterised in that：It is described organic molten
Agent is n-hexane.
3. the minimizing technology of according to claim 1 pair of rubigan trichloroethanes, it is characterised in that：Second step processing
Time be more than or equal to 2.5 hours.
4. the minimizing technology of according to claim 1 pair of rubigan trichloroethanes, it is characterised in that：Into the water
Sodium chloride is added, the addition of the sodium chloride is 20% of the quality more than or equal to water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247118.8A CN106986406B (en) | 2017-04-17 | 2017-04-17 | Method for removing bis-p-chlorophenyl trichloroethane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247118.8A CN106986406B (en) | 2017-04-17 | 2017-04-17 | Method for removing bis-p-chlorophenyl trichloroethane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106986406A true CN106986406A (en) | 2017-07-28 |
| CN106986406B CN106986406B (en) | 2021-01-05 |
Family
ID=59415182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710247118.8A Active CN106986406B (en) | 2017-04-17 | 2017-04-17 | Method for removing bis-p-chlorophenyl trichloroethane |
Country Status (1)
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| CN (1) | CN106986406B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024527A (en) * | 2007-02-06 | 2007-08-29 | 天津大学 | Use of modified montmorillonite as organic chlorine farm chemicals adsorbant in dewatering system |
| WO2013068026A1 (en) * | 2011-11-07 | 2013-05-16 | Tehran University Of Medical Sciences (Tums), Faculty Of Environmental University Of Tehran | Development of a new coating for sorptive extraction by stir bars |
-
2017
- 2017-04-17 CN CN201710247118.8A patent/CN106986406B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024527A (en) * | 2007-02-06 | 2007-08-29 | 天津大学 | Use of modified montmorillonite as organic chlorine farm chemicals adsorbant in dewatering system |
| WO2013068026A1 (en) * | 2011-11-07 | 2013-05-16 | Tehran University Of Medical Sciences (Tums), Faculty Of Environmental University Of Tehran | Development of a new coating for sorptive extraction by stir bars |
Non-Patent Citations (3)
| Title |
|---|
| NOBUO OCHIAI等: "Solvent-assisted stir bar sorptive extraction by using swollen polydimethylsiloxane for enhanced recovery of polar solutes in aqueous samples Application to aroma compounds in beer and pesticides in wine", 《JOURNAL OF CHROMATOGRAPHY A》 * |
| 王彦娟等: "固态萃取搅拌棒技术与气相色谱联用测定植物中的有机氯农药", 《分析化学》 * |
| 边照阳主编: "《烟草农药残留分析技术》", 31 January 2015 * |
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| Publication number | Publication date |
|---|---|
| CN106986406B (en) | 2021-01-05 |
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