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Determination method for bromo-dioxin in environment sample

A technology for brominated dioxins and environmental samples, which is applied in the field of determination of brominated dioxins in environmental samples, can solve the problems of inability to accurately measure the brominated dioxin content of environmental samples and the like, and achieves a method of improving accuracy and sensitivity. Effect

Active Publication Date: 2015-07-01
CSD IDEA BEIJING INST OF ENVIRONMENTAL INNOVATION
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for the determination of brominated dioxins in environmental samples, which can effectively remove the interference of substances such as polybrominated diphenyl ethers on the determination of brominated dioxins in environmental samples, thereby solving the current Some determination methods cannot accurately determine the content of brominated dioxins in environmental samples

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  • Determination method for bromo-dioxin in environment sample
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Embodiment Construction

[0017] 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.

[0018] Such as figure 1 As shown, the embodiment of the present invention provides a method for the determination of brominated dioxins in environmental samples, which is an accurate determination of the content of brominated dioxins in the atmosphere, soil and sediment, especially polybrominated diphenyl ethers and A method for accurately determining brominated dioxins when brominated dioxins coexist, the method comprises the following steps:

[0019] Extraction step: the environmental sample to be tested is subjected to Soxhlet e...

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Abstract

The invention discloses a determination method for bromo-dioxin in an environment sample, particularly relates to determination of the bromo-dioxin in coexistence of polybrominated diphenyl ethers and the bromo-dioxin, and belongs to the field of detection of the bromo-dioxin. The determination method comprises pre-treatment of the sample and instrument analysis. The pre-treatment of the sample comprises Soxhlet extraction-sulfuric acid treatment-purification by multilayered silica gel columns-purification by an active carbon silica gel column-nitrogen blowing concentration; and the determination is as follows: an isotope dilution-high resolution gas chromatography-high resolution mass spectrometry (HRGC-HRMS) is used for determining the test sample. The problems that the polybrominated diphenyl ethers and the bromo-dioxin are difficult to separate when the polybrominated diphenyl ethers and the bromo-dioxin coexist, and the bromo-dioxin is decomposed into the polybrominated diphenyl ethers in the instrument analysis process are solved, so that the method is a high-sensitivity and high-accuracy analysis method for determining the bromo-dioxin in the sample.

Description

technical field [0001] The invention relates to the determination of brominated dioxins in environmental samples, in particular to a method for accurately determining the content of brominated dioxins when polybrominated diphenyl ethers and brominated dioxins coexist. Background technique [0002] Brominated dioxins (PBDD / Fs) are a new type of persistent organic pollutants (POPs), which have similar physical and chemical properties and toxic effects to chlorinated dioxins, mainly derived from the synthesis of brominated flame retardants, In the process of production, use and recycling, with the widespread use of brominated flame retardants, the environmental and health risks of brominated dioxins are increasing, and the research on their environmental problems has become a hot spot in the field of environmental science research. [0003] With the widespread use of brominated flame retardants, brominated dioxins that exist in the environment at ultra-trace levels, chlorinated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 江伟山崎教正陆勇李文超杨静
Owner CSD IDEA BEIJING INST OF ENVIRONMENTAL INNOVATION
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