显色法定性筛查饰品的镍释放  

Qualitative screening for nickel release from jewelry by characteristic coloration reaction

作　　者：黄宗平[1] 蓝光琳[1] 陈燕根 黄丽[1] 

机构地区：[1]厦门出入境检验检疫局,厦门361012 [2]义乌出入境检验检疫局,义乌322000

出　　处：《微量元素与健康研究》2011年第6期41-43,共3页Studies of Trace Elements and Health

基　　金：国家质检总局科技计划项目(2009IK075)

摘　　要：介绍了一种筛查饰品镍释放的定性方法,其原理基于金属镍与丁二酮肟或二硫代草酰胺反应生成特征的红色络合物。试验结果呈红色时,表明饰品表面镍释放量可能超过限量值0.5μg/(cm2.week)。讨论了镀层或涂层的影响、亚铁离子的干扰及消除,并与定量检测进行比较,方法快捷,结果可靠。A qualitative screening test method for nickel release from jewelry is introduced,based primarily on the formation of a characteristic coloured complex when nickel ions come into contact with dimethylglyoxime or dithiooxamide.Formation of a red colour,from light pink to strong cerise,indicates that the nickel release from a tested surface is likely to be greater than the limit valve 0.5 μg/（cm2·week）.The influence of coatings or electroplate was discussed,the interference and elimination of ferrous ions were studied,and the comparisons with quantitative determination were performed.This method shows rapidness and credible rusults.

关 键 词：定性筛查 镍释放 饰品 显色 

分 类 号：O657.31[理学—分析化学]