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Method for determining VOCs in packaging material through purging and trapping-gas chromatography-mass spectrometry

A purge and trap and gas chromatography technology, which is applied in the field of packaging material detection, can solve the problems of inaccurate chemical characterization, increase of interference factors, loss of substances to be tested, etc., to reduce the risk of false positives, small sample area, and enhanced characterization effect of ability

Pending Publication Date: 2020-09-04
CHINA PACKAGING RES & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will result in the loss of the analyte in the sample and also increase the interference factor
Although the gas chromatography currently used can meet the needs of detection and prevention and control in terms of quantity, it has the defects of inaccurate and narrow coverage in the qualitative of chemicals, which needs to be improved

Method used

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  • Method for determining VOCs in packaging material through purging and trapping-gas chromatography-mass spectrometry
  • Method for determining VOCs in packaging material through purging and trapping-gas chromatography-mass spectrometry
  • Method for determining VOCs in packaging material through purging and trapping-gas chromatography-mass spectrometry

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Embodiment Construction

[0023] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0024] A method for measuring VOCs in packaging materials by purge and trap-gas chromatography-mass spectrometry, characterized in that: the steps of the method are:

[0025] 1) Sample preparation: sample: food packaging paper and plastic composite film bag; specification model: material: BOPET / PAPER / PE, size (mm): 380×295×0.145; sample description: incoming sample sealed package, sample surface Printed; test content: test food packaging materials VOCs. Cut out 10cm of the densely printed pattern area in the material 2 Sample, place the sample to be tested in a purge bottle, seal it and wait for the test;

[0026] 2) Purge and trap sampling: send the sample in step 1) into the purge and trap injector. The sampling conditions are: the tempe...

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Abstract

The invention relates to a method for determining VOCs in a packaging material through purging and trapping-gas chromatography-mass spectrometry. The method is characterized by comprising the steps ofsample preparation, purging and trapping and sample introduction, chromatography-mass spectrometry combined determination, qualitative confirmation, quantitative analysis and calculation result analysis. The method is scientific and reasonable in structural design, and the content of 25 kinds of volatile organic pollutants (VOCs) in the packaging material and products thereof can be determined bythe method for determining the VOCs in the packaging material through the purge-trap-gas chromatography-mass spectrometry; through the purging and trapping and sampling mode, extraction and concentration by using an organic solvent are avoided, so that the interference of an external solvent is reduced; compared with a headspace mode, the purging and trapping mode needs smaller area of the sample, and the sensitivity is higher; a gas chromatograph-mass spectrometer is used for detection, so that the qualitative ability of the method is enhanced, and the false positive risk is reduced; and patent test types are many, including alcohols, esters, ketones, benzenes, alkenes, halogenated hydrocarbons and the like, and the test requirements of VOCs in packaging materials at present are basically met.

Description

technical field [0001] The invention belongs to the technical field of packaging material detection, relates to the measurement of VOCs in packaging materials, in particular to a method for measuring VOCs in packaging materials by purge and trap-gas chromatography-mass spectrometry. Background technique [0002] At present, the raw materials used in the production and printing of packaging materials (including but not limited to inks, solvents, polymers, etc.) contain a large amount of volatile organic compounds (VOCs), including alcohols, ketones, alkenes, esters, benzene and benzene series These packaging materials may migrate to food, medical supplies or the environment during use, causing harm to human health. Therefore, an analytical method for the simultaneous determination of multiple volatile organic compounds in packaging materials is needed. [0003] At present, the pretreatment of VOCs detection mainly adopts the headspace method and solid phase microextraction me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/8809G01N2030/884G01N2030/8854
Inventor 杜悦刘智孟婕南洋张卫红
Owner CHINA PACKAGING RES & TEST CENT
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