ICP-AES法测定玩具涂层可迁移重金属含量

Simultaneous determination of residual content of transportable heavy elements Sb,As,Ba,Cd,Cr,Pb,Se in paint coat on toys by ICP-AES

目的：建立全谱直读等离子光谱仪同时测定玩具涂层中Sb，As，Ba，Cd，Cr，Pb，Se可迁移重金属残留量的检测方法。方法：在最佳仪器、反应条件下同时测定玩具涂层可迁移重金属含量（Sb，As，Ba，Cd，Cr，Pb，Se）。结果：具有良好线性（r〉0．9998），酸度影响小，最小检测限量0．0075mg／L，加标回收率在92％～102％之间，相对标准偏差小于1．7％。结论：该方法快速、准确、可靠，适用于玩具的日常检验。

Objective ：To establish a method for the simultaneous determination of the residual content of transportable heavy elements Sb, As, Ba, Cd, Cr, Pb, Se in paint coat＇on toys by ICP - AES. Methods： Under the proposed conditions, heavy elements Sb, As, Ba, Cd, Cr, Pb, Se were determined simultaneously using extraction with imitated gastric juice（ C = 0. 07 mol/L HC1）. Re- suits：The correlation coefficients were greater than 0. 9998. Acidity was of little influence. The minimum detection limit was 0. 0075 mg/L. The recovery rates of this procedure were between 92% and 102%. The RSD was within 1.7%. Conclusion：The proposed method is simple, rapid and can be used in daily inspection of toys.