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Method for measuring 32 volatile substances in plastic product with gas chromatography/mass spectrometry

A technology for volatile substances and plastic products, which is applied in the field of chemical detection, and can solve problems such as residues, hidden dangers to consumer safety, and lack of detection methods

Active Publication Date: 2015-11-18
TAIZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these volatile substances used may remain in the final product, causing safety hazards to consumers
The European Union (EU) NO10 / 2011 regulations stipulate that the limit of these volatile substances migrating into food or food simulants shall not exceed 60mg / kg, but no corresponding detection method is provided

Method used

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  • Method for measuring 32 volatile substances in plastic product with gas chromatography/mass spectrometry
  • Method for measuring 32 volatile substances in plastic product with gas chromatography/mass spectrometry
  • Method for measuring 32 volatile substances in plastic product with gas chromatography/mass spectrometry

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Embodiment 1

[0020] The headspace gas chromatography-mass spectrometry method of the present invention measures 32 kinds of volatile substances in plastic products of food contact materials, and the method comprises the following steps:

[0021] 1. Sample pretreatment

[0022] (1) Use special scissors to cut the food-contact plastic products of the sample to be tested into particles below 2mm×2mm. Cut at least 3-5g of each sample, and mix it uniformly as the sample to be tested.

[0023] (2) Take 0.1 g (accurate to 0.1 mg) of the sample to be tested in a headspace bottle, add 50 μL of chromatographically pure methanol, and immediately tighten the cap of the bottle to be tested.

[0024] 3. Blank test: No sample is added to the headspace bottle, and 0 μL of chromatographically pure methanol is directly added, and the bottle cap is tightened immediately for testing.

[0025] 2. Headspace-gas chromatography / mass spectrometry (HS-GC / MS) conditions

[0026] 1. Headspace-gas chromatography / mas...

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Abstract

The invention provides an HS-GC-MS (head space-gas chromatography-mass spectrometry) method for measuring 32 volatile substances in a food contact plastic product simultaneously. The food contact plastic product is sheared into granules, and the granules are subjected to static HS treatment at the temperature of 90 DEG C for 40 minutes, measured with GC-MS and quantified with an external standard method. According to the method, the limits of quantitation of different volatile substances are all under 5 mg / kg, the linearity range is from 0.5 mu g to 10 mu g, the linearly dependent coefficients are all larger than 0.9975, the average recovery rate ranges from 75.2% to 108%, and the RSD (relative standard deviation) ranges from 0.4%-9.7% (n is equal to 6). The method is simple and convenient to operate, high in sensitivity and good in accuracy and can be better applied to detection of the volatile substances in the food contact plastic product.

Description

technical field [0001] The invention belongs to the field of chemical substance detection, and relates to a method for detecting 32 kinds of volatile substances in plastic products of food contact materials, in particular to a headspace gas chromatography-mass spectrometry (HS-GC / MS method) for detecting volatile substances in plastic products of food contact materials. 32 detection methods for volatile substances. Background technique [0002] In the modern food production and distribution system, food contact materials play an extremely important role. They can be called the "coat" of food and are closely related to our daily life. Especially plastic products of food contact materials are loved by consumers because of their light weight, beautiful appearance, low cost, insulation, drop resistance, and corrosion resistance. However, while these various plastic products bring convenience to our lives, they also bring corresponding safety problems, such as bisphenol A and pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 刘艇飞王建玲孙春燕肖晓峰陈彤何军邓弘毅
Owner TAIZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU PEOPLES REPUBLIC OF CHINA
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