Standard No.:	GB 7917.3-1987
English Name:	Standard methods for hygienic test for cosmetics; Lead
Chinese Name:	化妆品卫生化学标准检验方法 铅
Chinese Classification:	C51    Environmental sanitation
Professional Classification:	GB    National Standard
ICS Classification:	71.100.70 71.100.70    Cosmetics. Toiletries 71.100.70
Issued by:	Ministry of Health
Issued on:	1987-05-28
Implemented on:	1987-10-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	2500 words
Price(USD):	50.0
Delivery:	via email in 1 business day

This method is applicable to the determination of lead in cosmetics. The minimum detectable concentration of the sample adopted by this method is 4ppm. 1.1 Principle Retreat the sample to make the lead exist in the test solution in the ionic state. After the lead ion is atomized in test solution, the ground state atom absorbs the resonance line emitted by lead hollow cathode lamp and the absorbing capacity is proportional to the lead content in sample. The lead is quantified by comparing with standard series according to the measured the spectral line intensity after absorption when other conditions keep unchanged.

Contents 1 Flame Atomic Absorption Spectrophotometric Method 2 Dithizone Extraction Spectrophotometric Method Additional Explanation