A method for detecting denatonium benzoate content in toy materials

A technology of benzoic acid and toys, applied in the field of analytical chemistry, can solve the problems such as no literature report on the detection of denatonium benzoate, and achieve the effects of good reproducibility, easy operation and high accuracy

Active Publication Date: 2022-04-15
义乌市产品(商品)质量监督检验研究院
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Problems solved by technology

Also do not see the detection bibliographical report of relevant denatonium benzoate as yet

Method used

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[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The invention provides a kind of method that detects denatonium benzoate content in the toy material, adopts acetonitrile-water (30:70, v / v) solution as extraction solvent, through ultrasonic extraction 20min, constant volume, after filtering, with acetonitrile -Water is the mobile phase for gradient elution, using a C-18 column as a chromatographic column, using a photodiode array (PDA) detector, and the detection wavelength of denatonium benzoate is 227.4nm. Specific steps are as ...

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Abstract

The invention discloses a method for detecting the content of denatonium benzoate in toy materials, which comprises preparing standard stock solutions, intermediate working standard solutions and serial concentration standard solutions respectively, preprocessing samples to be tested, and performing high performance liquid chromatography detection , using acetonitrile-water (30:70, v / v) solution as the extraction solvent, after ultrasonic extraction, constant volume, after filtration, gradient elution is carried out with acetonitrile-water as the mobile phase, and a C-18 column is used as the chromatographic column, With a photodiode array detector, the detection wavelength of denatonium benzoate is 227.4nm, the detection limit is 2.66ng (based on 3 times the signal-to-noise ratio), the average recovery rate is 99.3%, and the method precision is 0.81%-2.36%. This method has low detection limit and high precision, and is suitable for the determination of the bittering agent denatonium benzoate content in this field. It can improve the level of management of liquid or viscous toys in my country, protect the legitimate rights and interests of children and consumers in China, and at the same time promote the development of toys in my country. The smooth export of products is of great significance.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, and relates to a method for detecting the content of denatonium benzoate in toy materials, specifically a high-performance liquid chromatography method for determining the content of bittering agent denatonium benzoate in liquid or viscous toy materials . Background technique [0002] Liquid or viscous toys, such as modeling clay, finger paint, etc., are a type of toy specially designed for children, and are used for modeling or painting by dipping hands or fingers. Children have poor self-control and weak awareness of hygiene. When children use and play with such toys, if they accidentally touch their mouths with their fingers, the toxic and harmful substances in these toys will enter their bodies, which is harmful to children's physical and mental health. cause serious harm. Therefore, countries around the world have introduced strict regulations and standards to limit the bitter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 陈德文季倩祎余妙琴吴重彬
Owner 义乌市产品(商品)质量监督检验研究院
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