標(biāo)準(zhǔn)編號:	GB 7917.2-1987
中文名稱:	化妝品衛(wèi)生化學(xué)標(biāo)準(zhǔn)檢驗(yàn)方法 砷
英文名稱:	Standard methods of hygienic test for cosmetics; Arsenic
中標(biāo)分類:	C51    環(huán)境衛(wèi)生
行業(yè)分類:	GB    國家標(biāo)準(zhǔn)
ICS分類:	71.100.70 71.100.70    美容品、化妝品 71.100.70
發(fā)布機(jī)構(gòu):	衛(wèi)生部
發(fā)布日期:	1987-05-28
實(shí)施日期:	1987-10-1
標(biāo)準(zhǔn)狀態(tài):	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	4000 字
翻譯價(jià)格(元):	100.0
交付時(shí)間:	付款后 1 個(gè)工作日

1.1 Principle The pentavalent arsenic in the sample solution of the ashed or digested specimen will be reduced to trivalent arsenic under the action of kalium iodide and stannous chloride. The trivalent arsenic will generate arsine gas with the nascent hydrogen. The hydrogen sulfide interference is removed by cotton immersed in lead acetate solution and then the arsine gas acts with silver diethyl dithio carbamate which is dissolved in triethanolamine - chloroform and generate brownish red collargol silver; then colorimetric assay is conducted. Cobalt, nickel, mercury, silver, platinum, chromium and molybdenum may interfere the generation of arsine, but under normal conditions, the content in cosmetics will not cause interference. Stibium has an obvious interference on the determination.

Contents 1 Silver Diethyldithiocarbamate Spectrophotometric Method 2 Gutzeit Method Additional Explanation