电感耦合等离子体发射光谱法测定古墓土壤样品中铜、铅、锌、铁

Determination of Cu,Pb,Zn and Fe in Tomb Soil Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry

样品经氢氟酸-盐酸-硝酸-高氯酸混合酸溶解,在φ为5%的硝酸介质中,用电感耦合等离子体发射光谱法测定古墓土壤样品中的铜、铅、锌、铁,克服了传统分析方法步骤冗长、过程难以控制等缺点.方法检出限为:铜2.0μg/g,铅3.0μg/g,锌2.0μg/g,铁10μg/g,精密度(RSD,n=12)在1.5%～12.0%.方法经由国家一级标准物质分析验证,测定值与标准值吻合,结果准确可靠.样品处理程序简单快速,线性范围宽,分析重现性好.

Samples were digested with a mixed acid of HF-HCl-HNO3-HClO4,in a 5% Nitric acid solution,Cu,Pb,Zn,Fe in tomb soil samples were directly determined by inductively coupled plasma-atomic emission spectrometry（ICP-AES）.The method overcomes the demerits of the traditional method i.e.,a tediously long analytical procedure and a difficult to control process.The detection limits of the method were： 2.0 μg/g for Cu,3.0 μg/g for Pb,2.0 μg/g for Zn and 10 μg/g for Fe.The reliability of the method has been tested by the determination of these elements in the National Standard Reference samples and the results are in good agreement with certified values with precisions of 1.5%~12.0% RSD（n=12）.The method exhibits simplicity,rapidity,good reproducibility,wide linearity.It is suitable for the multi-element determination of dissolved mineral.