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Epichlorohydrin extraction reagent, preparation method and detection method

A technology for epichlorohydrin and a detection method, which is applied in the directions of measuring devices, instruments, scientific instruments, etc., can solve problems such as difficulty in effectively extracting epichlorohydrin, and achieve the effects of promoting extraction efficiency and improving sensitivity

Pending Publication Date: 2021-06-01
深圳市水文水质中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an epichlorohydrin extraction reagent and a preparation method and a detection method, aiming at solving the problem that the prior art is difficult to effectively extract epichlorohydrin

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  • Epichlorohydrin extraction reagent, preparation method and detection method
  • Epichlorohydrin extraction reagent, preparation method and detection method
  • Epichlorohydrin extraction reagent, preparation method and detection method

Examples

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Embodiment 1

[0069] 1), preparation of epichlorohydrin extraction reagent pack

[0070] Dry sodium sulfate, disodium hydrogen phosphate and sodium dihydrogen phosphate respectively;

[0071] Accurately weigh 3 grams of sodium sulfate, 4.44 mg of disodium hydrogen phosphate, and 1.18 mg of sodium dihydrogen phosphate and mix them to obtain a mixture;

[0072] The mixture was packaged with a 3.5×3.5 cm paper lined with a waterproof layer, and heat-sealed to obtain an epichlorohydrin extraction reagent package.

[0073] 2), detection of epichlorohydrin

[0074] Open the epichlorohydrin extraction reagent bag and pour it into a 20mL solid-phase microextraction headspace bottle;

[0075] Fill the above headspace vial with 10mL sample;

[0076] Immediately add 40 μL epichlorohydrin internal standard (the internal standard is pure epichlorohydrin with known mass and no impurities in the sample, which is used to compare and determine the content of the components to be tested), close the cap ti...

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Abstract

The invention discloses an epichlorohydrin extraction reagent, a preparation method and a detection method. The epichlorohydrin extraction reagent is prepared from the following components in parts by weight: 1 to 4 parts of sulfate and 0.005 to 0.007 part of a phosphate buffer agent. Researches show that sulfate in the epichlorohydrin extraction reagent can greatly promote the extraction efficiency of epichlorohydrin, so that the sensitivity of epichlorohydrin detection can be improved.

Description

technical field [0001] The invention relates to the technical field of epichlorohydrin detection, in particular to an epichlorohydrin extraction reagent, a preparation method and a detection method. Background technique [0002] Epichlorohydrin is one of the widely used chemical intermediates for the synthesis of chemical products such as epoxy resins. Epichlorohydrin can damage the central nervous system, induce tumors, and have genotoxicity in vitro and in vivo. Therefore, WHO lists it as a 2A substance (possibly carcinogenic), with a guideline value of 0.0004mg / L. [0003] Because epichlorohydrin in the environment may enter the municipal water supply system to cause pollution and endanger the health of the population, it is necessary to limit its content in drinking water. Usually, the standard limit of epichlorohydrin in drinking water is set as 0.0004mg / L, and more strictly, the limit of epichlorohydrin in drinking water is 0.0001mg / L. The U.S. EPA believes that if ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/30G01N30/32G01N30/72
CPCG01N30/02G01N30/06G01N30/30G01N30/32G01N30/72G01N2030/062G01N2030/324
Inventor 雷萍王路高静思黄少波陈庚
Owner 深圳市水文水质中心
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