A method for extracting additives in paper food packaging materials and its non-targeted screening method
A technology for food packaging and additives, applied in material separation, analysis materials, measuring devices, etc., can solve problems such as chromatographic column damage, complex components, and interference target analysis, and achieve strong specificity, simple operation, and rich analysis types Effect
Active Publication Date: 2022-03-11
CHINA TOBACCO YUNNAN IND
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Problems solved by technology
[0004] However, the composition of paper-based food packaging materials is complex, and the interfering impurities other than the target substance (additive) will not only interfere with the analysis of the target substance, but also cause fatal damage to the chromatographic column in the mass spectrometer and gas chromatography, so how to effectively extract Additives in paper food packaging materials and purification to remove interfering impurities in paper food packaging materials has become a problem that needs to be solved urgently
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[0038] In order to facilitate the understanding of the present invention, the technical solutions of the present invention will be further described below in conjunction with specific examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0039] Reagents and medicines used in this embodiment:
[0040]Modified polyphenylene ether (MPPO, commonly used trade name is Tenax-TA adsorbent); acetonitrile, chromatographically pure; water, GB / T 6682, first grade; deuterated anthracene (C 14 D. 10 , CAS: 1719-06-8), purity ≥ 98%; the internal standard solution accurately weighed 10 mg deuterated anthracene, accurate to 0.1 mg, dissolved in acetonitrile and fixed volume in a 100 mL volumetric flask, and prepared to a concentration of 100 μg / mL The internal standard solution of deuterated anthracene is sealed and stored in the dark at 0-4°C, and the validity period is 3 months. ...
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Abstract
The invention discloses a method for extracting additives in paper food packaging materials, which comprises the following steps: (1) weighing modified polyphenylene ether and laying it flat on the bottom of a weighing dish; The food packaging material packaging food area is used as a sample, and the sample is spread on the modified polyphenylene ether, and the gland is sealed; (3) the weighing dish containing the sample and the modified polyphenylene ether in step (2) is placed Carry out the migration test in the oven; (4) Transfer the modified polyphenylene ether in the weighing dish to a centrifuge tube, extract it with ultrasonic waves and centrifuge, transfer the supernatant to a concentration bottle for concentration by nitrogen blowing, and filter through an organic filter membrane Afterwards, the additive extract of the sample was obtained. The invention further discloses a non-targeted screening method for additives in paper food packaging materials. The screening method of the invention has strong specificity, simple operation, fast accuracy, and rich analysis types, and can be used for rapid analysis of paper food packaging materials. and quality control provide scientific methods.
Description
technical field [0001] The invention belongs to the technical field of food packaging analysis and detection, and in particular relates to a method for extracting additives in paper food packaging materials and a non-target screening method thereof. Background technique [0002] In recent years, a large number of toxic and harmful foods have appeared, which has caused the public's extreme distrust of food safety. At the same time, food packaging materials that are closely related to food safety are gradually entering the public's field of vision. With the pressure of environmental protection, plastic and paper are the most used food packaging materials in recent years. Among them, paper packaging materials have good recyclability and can fully meet environmental protection requirements, so they are widely used. In addition, paper packaging materials have excellent processing properties. It also has excellent performance in terms of mechanical strength. During the use of pap...
Claims
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IPC IPC(8): G01N30/02G01N30/06G01N30/12G01N30/72G01N30/86
CPCG01N30/02G01N30/06G01N30/12G01N30/8679G01N30/8631G01N30/72G01N2030/045G01N2030/126
Inventor 王茹王晋许永田丽梅缪恩铭耿咏勤蒋次清陈建华魏玉玲唐萍李雪梅张承明
Owner CHINA TOBACCO YUNNAN IND