微波消解-电感耦合等离子体原子发射光谱(ICP-AES)法测定ABS塑料中Pb、Cd、Hg

Determinating Pb,Cd,Hg in ABS Plastics by ICP-AES with Microwave Digestion

以ABS塑料为研究对象,采用微波消解法进行样品的前处理,使用电感耦合等离子体原子发射光谱(ICP-AES)法测定ABS塑料中Pb、Cd、Hg,结果表明,Pb、Cd、Hg加标回收率均在95.0%～105%,测定相对标准偏差(RSD)均小于3%,方法在缩短样品前处理时间的同时得到较高的元素消解回收率和较为理想的精密度,适用于ABS塑料中重金属含量的快速测定。

In this paper,the determination method for ABS plastics was studied.The microwave digestion for the pre-treatment of samples was used and determination of Pb,Cd,Hg content in ABS plastics by inductively coupled plasma emission spectrometry was established.The result shows that the recovery rate of standard addition is within 95.0%-105%,with the test precision within 3%.In addition to reduce time of pre-treatment,this method can obtain higher element digestion recovery and better precision.It is applicable for the rapid determination of heavy metals in ABS plastics.