Detection and analysis method of short-chain chlorinated paraffin

A technology of short-chain chlorinated paraffin and an analytical method, which is applied to the detection field of paraffin, can solve the problems of non-unique extraction of ions and inability to accurately quantify short-chain chlorinated paraffin compounds, etc., and achieves comprehensive and low detection limit of extracted ion pairs. , Qualitatively accurate effect

Inactive Publication Date: 2016-05-18
上海英格尔认证有限公司 +1
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Problems solved by technology

[0008] GC-MS (EI source) analyzes short-chain chlorinated paraffins, qualitative and quantitative extraction ions also exist in medium-chain chlorinated paraffins and long-chain chlorinat

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  • Detection and analysis method of short-chain chlorinated paraffin
  • Detection and analysis method of short-chain chlorinated paraffin

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Embodiment Construction

[0028] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific diagrams.

[0029] refer to figure 1 , a method for detecting and analyzing short-chain chlorinated paraffins, comprising the following steps: step 1, sample processing, after the sample is ultrasonically extracted with tetrahydrofuran, shaken in acetonitrile, precipitated, and filtered to obtain a treated extraction solution; step Two, use high-performance liquid chromatography in series with triple quadrupole mass spectrometry to carry out qualitative analysis on the extracted solution after treatment; Step three, use high-performance liquid chromatography in series with triple quadrupole mass spectrometry to analyze the extracted solution after treatment quantitative analysis. The invention optimizes the detection and analysis method of the traditional short...

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Abstract

The invention relates to the technical field of chemical detection. A detection and analysis method of short-chain chlorinated paraffin includes the following steps of firstly, processing a sample, wherein the sample is put in acetonitrile to be shaken after being subjected to ultrasonic extraction through tetrahydrofuran, and a processed extraction solution is obtained after sedimentation and filtration; secondly, conducting quanlitative analysis on the processed extraction solution through a high performance liquid chromatography-tandem triple quadrupole mass spectrometer; thirdly, conducting quantitative analysis on the processed extraction solution through the high performance liquid chromatography-tandem triple quadrupole mass spectrometer. According to the method, by optimizing a traditional detection and analysis method of short-chain chlorinated paraffin, pretreatment extraction is improved under the condition of ensuring consistency of extraction effects, and therefore the extraction solution can be suitable for liquid-phase analysis. In addition, by means of the high performance liquid chromatography-tandem triple quadrupole mass spectrometer and through the combination with the advantages of the phase liquid and mass spectrums, detection and analysis on short-chain chlorinated paraffin are conveniently achieved, and a lower method detection limit is obtained.

Description

technical field [0001] The invention relates to the technical field of chemical detection, in particular to a paraffin detection method. Background technique [0002] Short-chain chlorinated paraffins are widely used as flame retardants, plasticizers, and treatment agents in textiles, clothing, rubber, and plastics. Short-chain chlorinated paraffins are currently banned worldwide. For the detection of short-chain chlorinated paraffins, conventional laboratory instrument methods include GC-ECD method and GC-MS (EI source) method, and the test and analysis process is as follows: [0003] 1. The sample is extracted by ultrasound, filtered through the filter membrane to the sample injection vial, and analyzed on the machine; [0004] 2. The GC-ECD method uses finger-shaped peaks for qualitative and quantitative analysis of short-chain chlorinated paraffins; [0005] The GC-MS (EI source) method uses mass spectrometry to extract ion spectra for the qualitative and quantitative...

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Application Information

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IPC IPC(8): G01N30/02
Inventor 韩娟
Owner 上海英格尔认证有限公司
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