ICP-MS法测定粉煤灰中痕量重金属的研究

Study on the Trace Heavy Metal in Fly Ash with ICP-MS Method

研究了微波消解样品 ,试液用ICP MS法同时测定样品中Pb、As、Cd、Cr、Ni等重金属元素。对影响测量的各种因素进行了探讨 ,确定了实验最佳测定条件。研究结果表明 ,该法检出限为 0 .0 0 1～ 0 .0 0 8μg/L ,回收率为92 .98%～ 10 9.12 % ,RSD小于 2 .89% ,用于测定粉煤灰中的重金属元素准确、快速、简便。

A method of microwave digestion with a samp le of ICP-MS simutanueusly determining Pb,As,Cd,Cr,Ni was studied in this paper.The various factors affecting were examined in details.The optimum comditions for the determination are tested. The study results show that the limit of the method is 0.001～0.008μg/L,and the recycling rate from 9 2 .98%to 109.12 %,as well as RSD is less than 2.89%. The method which is used i n the determination of trace heavy metals in fly ash is accurate , guick and convenient.