摘要
采用感应耦合等离子体质谱 (ICP MS)法 ,对硬聚氯乙烯 (PVC U)饮水管材和管件中痕量重金属元素铅、镉、锡、汞进行了分析。研究了影响测量的各种因素 ,确定了实验的最佳测定条件。结果表明该方法的检出限为 :Pb ,0 .0 0 2 8μg/L ;Cd ,0 .0 0 2 5 μg/L ;Sn ,0 .0 0 5 2 μg/L ;Hg ,0 .0 0 3 3 μg/L ;回收率为 96.0 4%～ 97.2 0 % ,相对标准偏差(RSD)小于 2 .5 3 %。该方法应用于硬聚氯乙烯饮水管材和管件中痕量铅、镉、锡、汞的测定 ,简便、快速。
A methodology for determining the trace amount of Pb, Cd, Sn, and Hg in unplastized PVC pipes and fittings for drinking water supply was set up using an inductively coupled plasma-mass spectrometry (ICP-MS). The optimum conditions for the determination was tested and discussed. The detect limits of the method were Pb: 0.0028 μg/L,Cd: 0.0025 μg/L,Sn: 0.0052 μg/L,Hg: 0.0033 μg/L. The recycling rate ranged from 96.04 % to 97.20 %. RSD was less than 2.53 %. This method could be accurately, quickly and conveniently employed.
出处
《中国塑料》
CAS
CSCD
北大核心
2004年第7期80-82,共3页
China Plastics
关键词
电感耦合等离子体质谱
硬聚氯乙烯管材和管件
重金属
inductively coupled plasma mass spectrum
unplastized poly(vinyl chloride) pipe and fitting
heavy metal element
