Method for detecting content of denatonium benzoate in toy material

A benzoic acid and toy technology, applied in the field of analytical chemistry, can solve the problems that have not been reported in the literature on the detection of denatonium benzoate, and achieve the effects of good reproducibility, easy operation and high accuracy

Active Publication Date: 2019-06-25
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

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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 a toy material. The method comprises steps of separately preparing a standard stock solution, an intermediate working standard solution and a series of concentration standard solution; preprocessing a sample to be tested for high performance liquid chromatography detection; using an acetonitrile-water (30:70, v / v)solution as an extraction solvent, performing ultrasonic extraction, constant volume, and filtration; and performing gradient elution with the acetonitrile-water as mobile phase: using a C-18 columnas a chromatographic column, and using a photodiode array detector, a denatonium benzoate detection wavelength of 227.4 nm, a detection limit of 2.66ng (based on 3 times signal-to-noise ratio), an average recovery rate of 99.3%, and a precision of 0. 81% to 2.36%. The method has a low detection limit and high precision, is suitable for measuring the content of bitterant denatonium benzoate in thefield, and has great significance to improve the level of controlling liquid or viscous toys in China, protect the legitimate rights and interests of children's consumers in China, and promote the smooth export of toy products in China.

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 Applications(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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