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Citation: WANG Bo, LIU Ji-Xin, ZHANG Xiao-Hong, MAO Xue-Fei, DING Lan, NA Xing. Development of Semi-quantitative Solid Sampling Mercury Analyzer for Cosmetics[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(7): 1025-1031. doi: 10.11895/j.issn.0253-3820.181105 shu

Development of Semi-quantitative Solid Sampling Mercury Analyzer for Cosmetics

WANG Bo ^1,2, ,
LIU Ji-Xin ² ,
ZHANG Xiao-Hong ³ ,
MAO Xue-Fei ² ,
DING Lan ¹ ,
NA Xing ⁴

1.
College of Chemistry, Jilin University, Changchun 130000, China;
2.
Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
3.
Beijing Peking University Pioneer Technology Company, Limited, Beijing 100871, China;
4.
Beijing Ability Technique Company, Limited, Beijing 100081, China

Received Date: 8 February 2018
Revised Date: 2 May 2018

Fund Project: This work was supported by the National Key Research & Development Project (No. 2017YFD0801203) and the National Natural Science Foundation of China (No.31571924).

On the basis of the chromogenic reaction between Hg and CuI, a semi-quantitative solid sampling Hg analyzer comprising the catalytic furance, Hg testing tube, air pump and smart cellphone was developed. White carrier 101 was chosen as the adsorbent for CuI to react with Hg from the catalytic furnace. The established Hg analyzer can not only visually recognize the coloration when Hg exceeding the limit standard, but also semi-quantitatively detect the Hg content in cosmetics fast using a smart cellphone and RGB analysis software, after direct solid sampling introduction of cosmetics sample. The instrumental detection limit (LOD) of mercury was 50 ng, the linearity ranged from 50 ng to 2500 ng, the linear regression coefficient (R²) was higher than 0.97, and the RSD of the corresponding RGB values was 6% (n=11). Nine real cosmetics samples were measured by the established method, whose relative differences of Hg contents with that by the standard method (Safety Technical Specification for Cosmetics, 2015 edition) were less than 10%. The whole analytical time can be controlled within 5 min. The established instrumental method is simple, fast, accurate and visual, and extremely suitable to fast and on-site monitoring of Hg in cosmetics samples.
- Solid sampling,
- Semi-quantitative test,
- Cosmetics,
- Mercury,
- Chromogenic reaction
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