Method for measuring transfer volume of epoxy chloropropane in food contact material

A food contact material, epichlorohydrin technology, applied in the field of determination of epichlorohydrin migration, can solve the problems of inability to meet the detection requirements, low limit of epichlorohydrin, volatile compounds, etc., and achieve strong practicability of the method , Quantitatively accurate, reliable, and reproducible results

Active Publication Date: 2014-04-30
常州工业及消费品检验有限公司
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Problems solved by technology

The limit of epichlorohydrin is extremely low, and the compound is volatile and easy to decompose at room temperature, and ordinary instruments cannot meet the relevant dete

Method used

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  • Method for measuring transfer volume of epoxy chloropropane in food contact material
  • Method for measuring transfer volume of epoxy chloropropane in food contact material
  • Method for measuring transfer volume of epoxy chloropropane in food contact material

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Embodiment Construction

[0016] The food simulants involved in this embodiment include: 3% (W / V) acetic acid solution, 10% (V / V) ethanol solution, 20% (V / V) ethanol solution, n-pentane, n-heptane.

[0017] The method for determining the migration of epichlorohydrin in food contact materials includes the following steps:

[0018] Step 1: Prepare standard working solution, food simulant test solution and blank test solution: the standard working solution is water-based standard working solution with six concentrations prepared by epichlorohydrin and oily (n-pentane) with five concentrations or n-heptane) standard working solution; the food simulant test solution is composed of food contact materials and food simulants according to the test conditions of GB / T23296.1-2009 or the Japanese Ministry of Health and Welfare Notice No. 370 or Korean KFDA regulations 2-6 "each material Preparation method of migration test solution "Preparation of test solutions, including water-based food simulant test solution a...

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Abstract

The invention discloses a method for measuring the transfer volume of epoxy chloropropane in a food contact material. The method comprises the following steps: 1, preparing a standard working solution, a food simulant test solution and a blank test solution; 2, performing gas chromatography-tandem mass spectrum test on the three solutions in the step 1 by a gas chromatography-tandem triple quadrupole mass spectrum combined instrument respectively; drawing a standard working solution regression curve by taking the concentration x of epoxy chloropropane in the standard working solution as a horizontal coordinate and the corresponding measured quantitative ion peak area y as a longitudinal coordinate, and calculating the slope a and the intercept b of the regression curve according to a linear equation y=a*x+b obtained by the curve; 3, calculating the concentration of epoxy chloropropane in the food simulant test solution according to a formula c=[(y(simulant)-y(blank)-b]/a. The method can be used for accurately measuring the transfer volume of epoxy chloropropane in the food contact material, and is accurate and reliable in quantification and good in repeatability.

Description

technical field [0001] The invention relates to a method for measuring the migration amount of epichlorohydrin in food contact materials. Background technique [0002] Epichlorohydrin (also known as epichlorohydrin) is an important organic chemical raw material and fine chemical product with a wide range of uses. The epoxy resin prepared from it has the characteristics of strong adhesion, chemical medium corrosion resistance, good chemical stability, high impact strength and excellent dielectric and electrical properties. It is used in coatings, adhesives, reinforcing materials and food contact materials. and other industries have a wide range of applications. Epichlorohydrin is a highly toxic and harmful substance. Its vapor is highly irritating to the eyes and respiratory tract. Repeated and long-term inhalation can cause damage to the lungs, liver and kidneys; direct skin contact with the liquid can cause burns. Inhalation can also cause central nervous system depressio...

Claims

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Application Information

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IPC IPC(8): G01N30/88
Inventor 罗世鹏商贵芹刘君峰吴泽颖赵敏周雅静
Owner 常州工业及消费品检验有限公司
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