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Method for predicating perdurable stability of organic pollutants

A technology for stability prediction and organic pollutants, which is applied in the field of environmental chemical detection, can solve expensive and time-consuming problems, and achieve the effects of increased voltage intensity, simple operation, and moderate price

Inactive Publication Date: 2015-10-14
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The stability, persistence and degradability of organic pollutants, including triclosan, etc. The process of pollutant stabilization does not require accurate half-life data, but only needs to quickly obtain intuitive stability results of organic pollutants. How to predict the persistent stability of organic pollutants such as triclosan in the environment through monitoring technology is the current monitoring technology. Hotspots and Difficulties

Method used

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  • Method for predicating perdurable stability of organic pollutants
  • Method for predicating perdurable stability of organic pollutants

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Experimental program
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Effect test

Embodiment 1

[0017] Ibuprofen, also known as ibuprofen, is a phenylpropionic acid anti-inflammatory drug that is widely used in daily life. It is currently widely distributed in various environmental media and has potential environmental risks.

[0018] Using the method of the present invention to predict the stability and persistence of ibuprofen in the environment, the ibuprofen standard compound is dissolved in the methanol solution containing 200 μmol / L of ammonium acetate and 40% (v / v) to make a concentration of 40 mmol / L reaction solution, the pH of the reaction solution was adjusted to 7, and entered the electrochemical reaction system through a 1 mL glass syringe at a flow rate of 20 μL / min, the working electrode was glassy carbon, and the reference electrode was Pd / H 2 , the mode of applying voltage on the electrodes is the scan mode. In scan mode, the voltage increases from 0 V to 3.0 V at a rate of 10 mV / s, and then increases from 0 V to -3.0 V at a rate of -10 mV / s. The mass s...

Embodiment 2

[0020] Triclosan (2,4,4'-trichloro-2'-hydroxyl-diphenyl ether, Triclosan, TCS) is a typical PPCPs, which is a synthetic chlorinated PPCP with ether and phenolic groups. Aromatic compounds, triclosan has lipophilicity and bioaccumulation effects, and more and more studies have shown that triclosan has certain acute toxicity, genotoxicity and endocrine disrupting effects on organisms.

[0021] Using the method of the present invention to predict the stability and persistence of triclosan in the environment, the triclosan standard compound is dissolved in the methanol solution containing 200 μmol / L ammonium acetate and 40% (v / v) to make a concentration of 40 mmol / L reaction solution, the pH of the reaction solution was adjusted to 7, and entered the electrochemical reaction system through a 1 mL glass syringe at a flow rate of 20 μL / min, the working electrode was boron cobalt, and the reference electrode was Pd / H 2 , the mode of applying voltage on the electrodes is the scanning...

Embodiment 3

[0023] The method of the present invention has been used to predict the stability and persistence of a series of organic pollutants in the environment. The experimental method is the same as above. The stability and persistence of the organic compound predicted by the method is consistent with that reported in the literature, and the method of the present invention is more convenient and faster than the traditional method, thus illustrating the practical effectiveness of the method of the present invention.

[0024] The initial reaction voltage of the organic pollutants tested in Table 1 is compared with the stable persistence reported in the literature

[0025] organic compound IS(V) DP(V) EC initial reaction voltage (mV) / electrode Predicted Stable Persistence Half-lives reported in the literature ibuprofen -4500 -40 960 / glassy carbon weak 1.8-2 hours Triclosan -4500 -45 1600 / boron drill stronger 20-58 days 17?-Estradiol -4500 ...

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Abstract

The invention provides a method for predicating the perdurable stability of organic pollutants. According to the method, an electrochemical reaction system and a mass spectrum detector are combined for use, the voltage applied when a mass spectrum signal of an organic compound has obvious drop for the first time is taken as a starting reaction voltage of the organic compound, and the perdurable stability of the organic compound is determined according to a result obtained by measurement. By virtue of the method provided by the invention, the perdurability of the organic pollutants, such as triclosan, the environment can be technically predicated easily, conveniently and effectively, and thus a basis is provided for evaluating the environmental risks of the pollutants.

Description

technical field [0001] The invention relates to the field of environmental chemical detection, in particular to a monitoring technology for predicting the persistence of organic pollutants in the actual environment, and in particular to a method for predicting the persistence of organic pollutants in the actual environment by using online electrochemical mass spectrometry technology. Background technique [0002] With the development of industry and agriculture and the improvement of people's living standards, the pollution problems caused by various pollutants have become more and more prominent, and the rapid development of the chemical industry has increased the types and quantities of artificially synthesized organic substances. Some organic pollutants are difficult to absorb in the environment. Degradation, widely exists in various environmental media such as air, water, sediment, soil, etc., as well as food, animals, plants, and human body, and can be transferred and en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N27/62
Inventor 陈蕾荆肇乾王郑周旻旻
Owner NANJING FORESTRY UNIV