机电产品聚氯乙烯中铅、镉、铬、汞含量测定——发射光谱法  

Analysis of Pb,Cd,Cr,Hg in PVC from Mechanical and Electrical Products by DUO-ICP-AES with the Technology of Pressurized Digestion

作　　者：钟志光[1] 关迪峰[1] 陈强[1] 张海峰[1] 陈佩玲[1] 李政军[1] 

机构地区：[1]广东出入境检验检疫局,广东广州510623

出　　处：《润滑与密封》2006年第9期187-189,215,共4页Lubrication Engineering

基　　金：国家质量监督检验检疫总局科研制标项目(2005B065.2)

摘　　要：采用高温压力罐，将机电产品中的聚氯乙烯样品用硝酸．氟硼酸．过氧化氢溶解后，用全谱直读双向视电感耦合等离子体原子发射光谱仪（DUO-ICP-AES）同时测定聚氯乙烯中的铅、镉、铬和汞，方法的检测限为0．0015～0．014μg／mL，方法的回收率和精密度分别为87．7％～100．0％和0．12％～4．60％，实际样品的检测结果较为满意。该方法快速简便，可应用于机电产品密封外壳部件聚氯乙烯中的铅、镉、铬和汞日常检验。The PVC samples from mechanical electrical products were digested with nitric acid,and tetrafluoroborate solution and hydrogen peroxide in a tightly sealed PTFE vessel. The method for the determination of Pb, Cd, Cr, Hg in PVC was developed by DUO-ICP-AES. The detection limits of the method are in the range of 0. 001 5 -0. 014 μg/mL. The recovery rates and precision of the method are in the range of 87.7%-100. 0% and 0. 12%-4.60% respectively. This method can be used for the determination of Pb, Cd, Cr, Hg in PVC seal materials of mechanical and electrical products. The process is simple and rapidly with satisfactory resuhs.

关 键 词：发射光谱 高压消解 机电产品 聚氯乙烯 

分 类 号：P182.31[天文地球—天文学]