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 method of screening for the release of nickel from jewelry is presented, the principle of which is based on the red complex formed by the reaction of metallic nickel with dimethylglyoxime or dithiooxamide. Test results showed red, indicating that the surface of nickel jewelry release may exceed the limit value of 0.5μg / (cm2.week). The influence of coating or coating, the interference and elimination of ferrous ions were discussed. Compared with the quantitative detection, the method was quick and the result was reliable.