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Method for measuring trace polybrominated diphenyl ether in high concentration chemical oxygen demand (COD) landfill leachate

A technology for landfill leachate and polybrominated diphenyl ethers, which can be applied to measurement devices, instruments, scientific instruments and other directions, can solve the problems of inability to accurately detect high-concentration COD trace polybrominated diphenyl ethers, etc., and achieves low cost and a determination method. simple effect

Active Publication Date: 2013-08-07
CSD IDEA BEIJING INST OF ENVIRONMENTAL INNOVATION
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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a method for measuring trace polybrominated diphenyl ethers in landfill leachate with high concentration COD, which can accurately measure trace polybrominated diphenyl ethers in landfill leachate with high concentration COD , so as to solve the problem that the current determination method cannot accurately detect trace polybrominated diphenyl ethers in landfill leachate with high concentration of COD

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  • Method for measuring trace polybrominated diphenyl ether in high concentration chemical oxygen demand (COD) landfill leachate
  • Method for measuring trace polybrominated diphenyl ether in high concentration chemical oxygen demand (COD) landfill leachate
  • Method for measuring trace polybrominated diphenyl ether in high concentration chemical oxygen demand (COD) landfill leachate

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Embodiment Construction

[0018] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The embodiments of the present invention are further described in detail below.

[0020] The embodiments of the present invention provide a method for determining trace amounts of polybrominated diphenyl ethers in landfill leachate with a high concentration of COD, comprising the following steps:

[0021] Continuous liquid-liquid extraction step: continuous liquid extraction of the landfill leachate stock solution with a COD concentration of not less than 2000 mg / L (the landfill leachate stock solution with a COD concentratio...

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Abstract

The invention discloses a method for measuring trace polybrominated diphenyl ether in high concentration chemical oxygen demand (COD) landfill leachate, belonging to the detection field. The method comprises the steps of: continuously carrying out liquid-liquid extraction, carrying out rotary evaporation concentration, treating the liquid by concentrated sulfuric acid until the liquid is colorless, washing the liquid by water until the liquid is neutral, purifying by a multilayer silica gel column, concentrating by blowing nitrogen, carrying out gas chromatography (GC), carrying out negative chemical ionization mass spectrometry (NCIMS) analysis, and the like; due to the organic coordination of all the steps, the trace polybrominated diphenyl ether in high-concentration COD landfill leachate can be measured; and the target substance can be accurately analyzed by utilizing the conditions of extraction, purification and instruments, so that good recovery rate and purification effect can be obtained.

Description

technical field [0001] The present invention relates to the determination method of polybrominated diphenyl ethers (PBDEs) in leachate stock solution, particularly relate to a kind of chemical oxygen demand (COD) concentration not less than 2000mg / L high concentration COD in landfill leachate trace polybromine Determination method of diphenyl ether. Background technique [0002] At present, the assay method of trace PBDEs in the landfill leachate stock solution is by adopting the method of dichloromethane liquid-liquid extraction, but generally measured COD concentration is 31-580mg / L (Japan) or 210-412mg / L (South Africa ) PBDEs in the landfill leachate stock solution, but the problem is: when the COD is greater than 2000mg / L, the use of dichloromethane liquid-liquid extraction will cause serious emulsification, and various damages such as ultrasonication, heating, standing, and filtration However, in the literature, glass fiber membrane filtration followed by C18 membrane ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 陆勇吴昌敏盛守祥山崎教正杨静徐建培
Owner CSD IDEA BEIJING INST OF ENVIRONMENTAL INNOVATION
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