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A method for the simultaneous determination of 12 opes residues in soil samples

A soil sample and stock solution technology, applied in the field of organic phosphate determination in soil, can solve the problems of low detection limit, poor anti-interference ability, and insufficient sensitivity, and achieve low detection limit, good stability, and high detection sensitivity high effect

Inactive Publication Date: 2019-07-19
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for simultaneously measuring 12 kinds of OPEs residues in soil samples, which has a low detection limit and is aimed at problems such as existing detection methods with certain limitations, insufficient sensitivity, and poor anti-interference ability. Good stability, basically able to meet the detection requirements of 12 kinds of OPEs residues in soil

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  • A method for the simultaneous determination of 12 opes residues in soil samples
  • A method for the simultaneous determination of 12 opes residues in soil samples
  • A method for the simultaneous determination of 12 opes residues in soil samples

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Embodiment Construction

[0034] Taking soil samples collected at 25 sampling points in a farmland in Jiangsu Province as an example, the following 12 OPEs residues in soil samples were simultaneously determined. The 12 OPEs included trimethyl phosphate (TMP) and trimethyl phosphate (TMP). Ethyl (Triethyl phosphate, TEP), Tri-n-butyl phosphate (TnBP), Tributoxyethyl phosphate (TBEP), tris (2-chloro phosphate) Isopropyl) ester (Tri(chloropropyl)phosphate, TCPP), Tri(dichloropropyl)phosphate (TDCP), Triphenyl phosphate (TPhP) ), Tricresylphosphate (TCrP), Tri(2-chloroethyl)phosphate (TCEP), Tri(2-ethylhexyl) phosphate (Tri(2-ethylhexyl) )phosphate, TEHP), tris(2,3-Dibromopropyl)phosphate (TDBPP), 2-Ethylhexyldiphenyl phosphate (EHDPP) ); The determination method includes the following steps:

[0035] A method for simultaneous determination of 12 OPEs residues in soil samples includes the following steps:

[0036] S1: Prepare mixed standard solution:

[0037] a. Prepare a single standard stock solution (10mg...

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Abstract

The invention relates to the technical field of the determination of organophosphorus esters in soil, in particular to a method for simultaneously determining 12 types of OPEs residues in soil samples. The method for detecting 12 types of OPEs residues in soil samples employs a high performance liquid chromatography-mass spectrometry and liquid-liquid extraction and solid phase extraction. The soil samples are extracted by liquid-liquid extraction and solid phase extraction, high performance liquid chromatography-mass spectrometry (MRM) is used to monitor ion pattern analysis, and an external standard method is used for quantitative analysis. The method of the invention has the advantages of low detection limit, good stability and high sensitivity for most OPEs, is used for rapidly screening OPEs in the soil, and can basically satisfy the detection requirement of 12 types of OPEs residues in soil samples.

Description

Technical field [0001] The invention relates to the technical field of determination of organic phosphates in soil, in particular to a method for simultaneously determining 12 kinds of OPEs residues in soil samples. Background technique [0002] In recent years, due to the biological toxicity and environmental risks of polybrominated diphenyl ethers (PBDEs) flame retardants, countries around the world have gradually restricted and banned the production and application of polybrominated diphenyl ethers. Organophosphate esters (OPEs), as the main substitutes for brominated flame retardants, have been widely used in plastics, textiles, electronic equipment and household products, and their production and consumption have increased significantly. Because OPEs are mainly added to products in a simple physical way, they inevitably enter the environment through various channels during their production, use, and disposal. Currently, they have been detected in farmland soil. Compared wit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/72G01N30/06G01N30/12
CPCG01N30/02G01N30/06G01N30/12G01N30/72G01N2030/062G01N2030/126
Inventor 徐怀洲宋宁慧张圣虎韩志华吴晟旻张芹陈玫宏
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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