ICP-AES测定废电路板剥离料中铅、锌、锡和镍量

Determination of Lead, Zinc, Tin and Nickel in WPCBs Stripping Materials by ICP-AES

介绍一种将废电路板剥离料粗杂铜样品用盐酸、酒石酸和过氧化氢溶解,在稀盐酸、酒石酸介质中用电感耦合等离子体原子发射光谱法连续测定其中的铅、锌、锡和镍的方法。该方法解决了溶样过程中锡生成偏锡酸沉淀而使结果偏低的问题。通过实验,确定了合适的分析线和仪器各项参数,4个被测元素的检出限为0.021~0.189μg/mL,相对标准偏差(RSD)(n=7)为1.06%~4.94%,加标回收率在95.00%~101.32%之间,能有效地满足废电路板剥离料粗杂铜样品中铅、锌、锡和镍的日常分析测定。

The paper introduces a method of determination of lead,zinc,tin and nickel,which uses hydrochloric acid,tartaric acid and hydrogen peroxide to dissolve the blisters and scraps from the WPCBs stripping materials,and makes continuous determination by inductively coupled plasma atomic emission spectroscopy in dilute hydrochloric acid and tartaric acid mediums.This method solves the problem that the metastannic acid precipitation in the sample dissolving results in low values.The appropriate analytical line and instrument parameters are determined by the test.It shows that the detection limit of four tested elements is 0.021~0.189μg/mL,RSD(n=7)is 1.06%~4.94%,and the recovery is 95.00%~101.32%,which can effectively satisfy the daily analysis and determination of lead,zinc,tin and nickel in the blisters and scraps from the WPCBs stripping materials.