电感耦合等离子体发射光谱法测定马口铁中的铅

Determination of Lead in Tinplate by ICP AES

本文提出了用ＩＣＰ－ＡＥＳ法测定马口铁中的痕量铅。试样用ＮａＯＨ－Ｈ２Ｏ２溶解镀层。测得四种样品的含铅量在０．１４～０．３８μｇ／ｃｍ２范围内。方法的回收率为９６．１％～１０３．２％。方法的精密度（ＲＳＤ）为２．６％～３．８％。本法简便迅速，测量结果的准确度、精密度满足分析要求。

The determination of lead in tinplate by ICP AES was presented in this paper.The tinplate samples were pretreated with NaOH H 2O 2 for dissolving tin and lead,and the spectral interferences from iron could thus be avoided.The lead content in the sample was determined in the range of 0 14 0 38 μg/cm 2.The recovery and the relative standard deviation (RSD) were in the ranges of 96 1% 103 2% and 2 6% 3 8%,respectively.The method was simple,rapid and efficient.