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Method of quantitatively detecting contents of endocrine disrupters in water in different occurrence modes

A technology for quantitative detection of endocrine disruptors, applied in the field of environmental analytical chemistry, can solve the problems of unclear distribution mechanism and regulation principle, and achieve good application value

Inactive Publication Date: 2018-10-02
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are very few studies on the distribution behavior of EDCs in three different phases of particle phase, colloid and true solution phase in water at home and abroad, and the distribution mechanism and regulation principle of its form are still unclear.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Determination of the content of ethinyl estradiol (EE2) in the granular phase, colloidal phase and true soluble phase of biochemical tail water of a city sewage

[0020] 1) Separation of different forms of EE2: Take 10L of urban sewage biochemical tail water, use 1μm pore size ceramic ultrafiltration membrane, the retentate phase liquid is vacuum freeze-dried and then used as particle phase for further analysis; the filtrate obtained above is further analyzed by TiO2 ceramic nanofiltration membrane (1nm pore size) high-pressure separation, the filtrate is used as the true dissolved phase, and the retentate is saved as the colloidal phase for analysis.

[0021] 2) Extraction of granular phase EE2: Weigh 2 g of the vacuum freeze-dried granular phase sample and place it in a 30 mL round-bottomed test tube, add 100 μL of internal standard (1.0 mg / L), then add 10 mL of methanol and 10 mL of dichloromethane and mix in a vortex Shake on the shaker for 10 minutes. A...

Embodiment 2

[0026] Example 2: Determination of the content of bisphenol A (BPA) in the granular phase, colloidal phase and true soluble phase of a heavily polluted river water body

[0027] 1) Separation of different forms of BPA: Take 10L river water samples, use 1μm pore size ceramic ultrafiltration membrane, and the retentate phase liquid is further analyzed as particle phase after vacuum freeze-drying; pore size) high-pressure separation, the filtrate is used as the true dissolved phase, and the retentate is saved as the colloidal phase for analysis.

[0028] 2) Extraction of granular phase BPA: Weigh 2 grams of vacuum freeze-dried granular phase sample and place it in a 30 mL round bottom test tube, add 100 μL of internal standard (1.0 mg / L), then add 10 mL of methanol and 10 mL of dichloromethane and mix in a vortex Shake on the shaker for 10 minutes. After shaking, ultrasonic for 15min, centrifuged at 3024g for 10min, the separated supernatant was put into a 200mL round-bottomed f...

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Abstract

The invention relates to a separation and detection method for organic pollutants, in different forms, in water body and belongs to the field of environmental analytical chemistry and particularly relates to a method of quantitatively detecting contents of endocrine disrupters (EDCs) in water in different occurrence modes. In the researching in prior art, it is generally assumed that after treatment via a filter membrane, the pollutant are in dissolved state in water body, and different forms that the pollutant are combined with colloidal microparticles are ignored; in the invention, through apre-treatment method of ceramic membrane filtration, ultrasonic-assisted extraction and solid-phase extraction for sequential extraction and with combination of analytic technology of high performance liquid chromatography-mass spectrum (HPLC-MS), contents of EDCs in particle phase, colloid combination phase and true-solution phase can be detected. The method can accurately quantitatively analyzecontents of the EDCs in water in different occurrence modes and has great application value of risk evaluation and controlling operation for the EDCs in water.

Description

technical field [0001] The invention relates to a method for separating and detecting different forms of organic pollutants in water in the field of environmental analytical chemistry, in particular to a method for quantitatively detecting the content of different forms of endocrine disruptors (EDCs) in water. Background technique [0002] Endocrine Disrupting Chemicals (EDCs) pollution has become the third largest global environmental hazard after the greenhouse effect and the destruction of the ozone layer. According to reports, the United States needs to spend 340 billion U.S. dollars every year to solve the health problems caused by long-term exposure to low concentrations of endocrine disrupting compounds, which is equivalent to 2.3% of the national GDP. The situation in Europe is also not optimistic, and it will cost 217 billion US dollars per year, accounting for 1.3% of European GDP. A large number of studies have shown that a wide variety of EDCs can be detected in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02C02F1/44B01D11/02B01D11/04B01D15/08
CPCB01D11/0265B01D11/04B01D15/08G01N30/02C02F1/44
Inventor 谢显传黄玉秦龙李爱民
Owner NANJING UNIV
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