Method for detecting plasticizing agent

A technology for plasticizers and dairy products, which is applied in the field of gas chromatography-mass spectrometry detection of plasticizers in dairy products, can solve problems such as inability to detect plasticizers, save testing costs, have high accuracy, and reduce testing costs. Effect

Active Publication Date: 2014-07-09
SICHUAN NEW HOPE DAIRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiency in the prior art that some enterprises are temporarily unable to detect plasticizers due to objective conditions due to the need to use two different chromatographic systems (gel permeation chromatography and gas chromatography), Provides a rapid method for the detection of plasticizers in milk

Method used

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  • Method for detecting plasticizing agent
  • Method for detecting plasticizing agent
  • Method for detecting plasticizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Recovery test

[0078] Phthalates contain a variety of substances with similar chemical properties. According to the requirements of the Ministry of Health [2011] No. 551 Announcement, the limit value regulations for the content of three plasticizers in food, di(2-ethyl)hexyl phthalate (DEHP), phthalic acid The maximum residues of diisononyl (DINP) and dibutyl phthalate (DBP) are 1.5mg / kg, 9.0mg / kg, and 0.3mg / kg respectively, and DEHP and DBP are specially selected for content determination.

[0079] Selective scanning of dibutyl phthalate and bis(2-ethyl)hexyl phthalate among 16 kinds of phthalates figure 2 , DEHP, DBP standard sample test retention time is shown in Table 2.

[0080] Table 2, DBP, DEHP retention time

[0081] name

[0082] According to above-mentioned standard product preparation and test method, record DEHP, DBP standard curve as follows image 3 , Figure 4 .

[0083] Add a certain amount of standard substance to raw milk, make 2 par...

Embodiment 2

[0089] Purchase 4 different brands of pure milk on the market, and selectively test the plasticizers dibutyl phthalate (DBP) and di(2-ethyl)hexyl phthalate (DEHP) according to the above detection method ), the detection results are shown in Table 4, and the detection spectra of samples 1-4 are as follows Figure 5-8 .

[0090] Table 4. Determination results of DBP and DEHP in 4 kinds of milk

[0091]

[0092] Experimental results show that the method of the present invention detects plasticizers, the detection process is simple and easy, and the recovery rate is suitable, within the acceptable range of normal detection and analysis. It can be used under restricted conditions and obtain accurate detection results.

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Abstract

The invention discloses a method for detecting a plasticizing agent in milk and milk products. The method comprises the following steps of: (1) preparing a standard solution, detecting by utilizing a gas chromatography-mass spectrometry to obtain retention time and a standard curve; (2) weighing raw milk or milk products and cyclohexane, swirling and mixing for 2-5 minutes, then adding sodium chloride and aluminum oxide, and swirling and shaking for 2-5 minutes, centrifuging at a rotary speed of 4000r / min for 5-10 minutes and taking liquid supernatant to detect; and (3) comparing a detected result obtained by the step (2) with the standard curve obtained in the step (1), and calculating and determining the content of the plasticizing agent. With the adoption of the method disclosed by the invention, a pre-treatment process is simple, a detection speed is fast and the precision of the detected result is high.

Description

technical field [0001] The invention relates to a chromatographic detection method for plasticizers, in particular to a gas chromatography-mass spectrometry detection method for plasticizers in dairy products. Background technique [0002] Plasticizer is a polymer material additive widely used in industry. Adding this substance in plastic processing can enhance its flexibility. Criminals add it to food to replace emulsifiers and thickeners, which seriously endangers the health of the people. [0003] Plasticizers are plasticizers that can be used in food packaging materials. They are not food raw materials or food additives. Artificial additions to food and food additives are strictly prohibited. The use of phthalates in food containers and food packaging materials should strictly implement the variety, scope and specific migration or residual amount specified in the "Hygienic Standards for the Use of Additives for Food Containers and Packaging Materials" (GB9685-2008). Ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 马岩峰刘海燕李启明夏忠悦张龙安彭恋邱
Owner SICHUAN NEW HOPE DAIRY
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