电感耦合等离子体原子发射光谱法测定金属饰品中铅、镉、铬、汞、锑、砷、硒、钡、镍溶出量  

ICP-AES Determination of Pb,Cd,Cr,Hg,Sb,As,Se,Ba and Ni Stripped from Metal Decorations

作　　者：陈德文[1] 汪欢晃 刘康伟[1] 朱红星[1] 

机构地区：[1]国家日用小商品质量监督检验中心,义乌322000

出　　处：《理化检验（化学分册）》2012年第2期150-151,154,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：浙江省质量技术监督局科研计划资助项目(20080240)

摘　　要：金属饰品样品用硝酸(20+80)溶液浸泡过夜,采用电感耦合等离子体原子发射光谱法测定金属饰品中铅、镉、铬、汞、锑、砷、硒、钡和镍的溶出量。选择波长为216.9,228.8,267.7,194.2,206.8,189.0,196.0,455.4,216.6nm的9条谱线依次作为测定铅、镉、铬、汞、锑、砷、硒、钡和镍的分析线。铅、镉、铬、锑、砷、硒、钡和镍的质量浓度与其发射强度在10.0mg·L-1以内、汞在2.0mg·L-1以内呈线性关系,检出限(3s)在0.002～0.05mg·L-1之间。方法用于金属饰品的分析,回收率在95.4%～103.0%之间,测定值的相对标准偏差(n=11)在0.68%～2.0%之间。Sample of metal decoration was immersed in HNO3-H2O （20＋80） solution for 24 h, and the contents of Pb, Cd, Cr, Hg, Sb, As, Se, Ba and Ni in sample solution were determined by ICP-AES. Wavelengths of 216.9, 228. 8, 267.7, 194.2, 206.8, 189.0, 196.0, 455.4 and 216.6 nm were selected as analytical lines for the determination of the 9 elements respectively. Linear relationships between values of emission intensity of Cd, Cr, Se, Ba and Ni were found in the ranges within 10.0 mg · L^-1, and within.2.0 mg · L^-1 for Hg. Values of detection limit （3s） of the method found were in the range of 0. 002-0.05 mg · L^-1. The proposed method was used in the analysis of metal decorations, giving values of recovery and RSD＇s （n=11） in the ranges of 95.4 %-103.0 %and 0. 68%-2. 0% respectively.

关 键 词：电感耦合等离子体原子发射光谱法 金属饰品 金属元素 

分 类 号：O657.31[理学—分析化学]