化妆品中新银盐法测定砷的问题研究  

STUDY OF THE QUESTION ON ANALYTICAL METHOD FOR ARSENIC DEFECTION IN COSMETIC BY NEW SILYER SALT METHOD

作　　者：王坚民[1] 余英[1] 

机构地区：[1]四川省疾病预防控制中心,成都610041

出　　处：《现代预防医学》2006年第10期1810-1812,共3页Modern Preventive Medicine

摘　　要：目的:通过对聚乙烯醇—硝酸银—乙醇分光光度法测定化妆品中砷的存在问题的实验研究分析,完善国家卫生规范检验方法。方法:消化处理后样品中的五价砷在碘化钾和氯化亚锡的作用下还原为三价砷经聚乙烯醇—硝酸银—乙醇溶液吸收形成黄色胶态银,比色测定。对不同室温下的标准系列的显色数据进行了方差分析。结果:不同室温下混合吸收液对同一含量的砷氢的吸收显色存在的差异有统计学意义(P<0·01)。结论:作为国家的卫生规范检验方法,聚乙烯醇+硝酸银+乙醇混合吸收分光光度法存在缺陷,为此建议增加相应的实验必要条件。Objective： The polyvinyl alcohol - silver nitrate- ethanol spectrophotometry method for determination of arsenic in oosmetic was proposed. The problem of the method was discussed in order to perfect national sanitation criterion verified method. Methods： The quinquevalence arsenic of the sample reverted into the trivalence arsenic by kalium iodid and sub - stannum chloride, absorbed by polyvinyl alcohol - silver nitrate- ethanol solution and formed gel silver, then determined by colorimetry. The results in different temperature was calculated by statistic analysis. Results： The results of arsenic hydride with the same content in mixed solution of different temperature showed notable diversity （ P〈0.01 ）. Conclusion： There was some limitation of the analytical method that polyvinyl alcohol - silver nitrate - ethanol spectrophotometry for determination of arsenic. Generally, as the national sanitation criterion verified method, it was proposed to enhance the experimentation condition.

关 键 词：砷 化妆品 分光光度法 

分 类 号：R168[医药卫生—公共卫生与预防医学]