电感耦合等离子体原子发射光谱(ICP-AES)法测定RoHS指令聚合物中的铅和镉

Determination of Lead and Cadmium in Polymers according to RoHS Directives by Inductively Coupled Plasma-Atomic Emission Spectrometry(ICP-AES)

采用微波技术消解聚合物塑料样品,使用电感耦合等离子体原子发射光谱(ICP-AES)法测定聚合物中的铅(Pb)和镉(Cd)含量,并建立了优化的样品消解程序和测定方法,结果表明,测定中Pb的相对标准偏差为1.8%,Cd的相对标准偏差为0.21%,对标准物质的测定值与标准值基本一致。方法具有效率高、污染小的优点,方法准确,可靠。

In this article,content of lead(Pb)and cadmium(Cd)in polymer plastic samples were determined by microwave digestion-inductively coupled plasma-atomic emission spectrometry.The optimized sample digestion procedure and determination method was established.The results showed the relative standard deviation for Pb was 1.8%and for Cd 0.21%.The method has high efficiency,low pollution and showing results with good precision.