Determination of Lead in Cosmetics by Potential Stripping Voltammetry
- VernacularTitle:化妆品中铅的电位溶出测定法
- Author:
Xiuzhen WANG
;
Weixing WANG
;
Zhaohui GUO
- Publication Type:Journal Article
- Keywords:
Potential stripping voltammetry;
Lead;
Cosmetics
- From:
Journal of Environment and Health
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a method for determination of lead in cosmetics. Methods Samples were digested. The lead content was detected by isochronous mercury-plating method with the condition of lead cation being enriched for 40 s at -1.20V(vs. SCE). Results The stripping potential peak of lead appeared at - 0. 20 V( vs. SCE) . The detection limit was 0.03 jug Pb. Six parallel determinations of a sample were done with the mean of 3.574mg/ kg and the relative standard deviation of 4. 1% . Recovery rates obtained by standard addition test ranged from 90% -100.5% . Conclusion The method is suitable for detecting lead in cosmetics.
