ICP-AES Determination of specific migration of 17 certain elements in Toys

【摘要】建立了电感耦合等离子体原子发射光谱（ICP-AES）法，可同时测定玩具中17种元素(铝、锑、砷、钡、硼、镉、铬、钴、铜、铅、锰、汞、镍、硒、锶、锡、锌)迁移量。砷、镉、铬、钴、铅、镍和硒的线性范围在0.01~10.0 mg·L^-1，铝、钡、铜、锰、锶、锌、锑、锡和硼在0.1~20.0 mg·L^-1，汞在0.01~1.0 mg·L^-1，仪器检出限（3s）在0.0003~0.03 mg·L^-1之间。方法用于玩具中17种元素特定迁移量分析，方法定量限在0.2~5 mg·kg^-1之间，回收率在88.4%~114.0%之间。重复性测定相对偏差（n=6）在0.08%~3.97%之间。该方法快速，简单，可靠性高，可多元素同时测定，适用于欧盟玩具安全新指令检测要求。

Abstract: A new method was developed for simultaneous determination of aluminum, antimony, arsenic, barium, boron, cadmium, chromium, cobalt, copper, lead, manganese, mercury, nickel, selenium, strontium, tin, zinc in toys by inductively coupled plasma optical emission spectrometry(ICP-AES). Linear relationships between values of emission intensity and the concentration of the elements were found. For As, Cd, Cr, Co, Pb, Ni and Se the concentration was between 0.01 mg·L^-1 and 10.0 mg·L^-1, for Al, Ba, Cu, Mn, Sr, Zn, Sb, Sn, B. the concentration were between 0.1 mg·L^-1 and 20.0 mg·L^-1, for Hg the concentration was between 0.01 mg·L^-1 and 1.0 mg·L^-1.  The results showed that the instrumental detection limits(3s) were 0.0003～0.03 mg·L^-1. The proposed method was used in the analysis of the specific migration of the 17 elements in toys. Detection limits of the method were between 0.2 mg·kg^-1 and 5 mg·kg^-1, and the recoveries 88.4~ 114.0%, with the RSDs(n=6) of 0.08%~3.97%.The method is simple and fast with high reliability, that can be applied to simultaneous determination of multi-element. It is suitable for the new EU toy directive.

【关键词】电感耦合等离子体原子发射光谱法；玩具；特定迁移量

Keywords: ICP-AES; Toys; Specific migration

原文发表于《光谱实验室》2013（2）