交流电弧发射光谱法测定地质勘查样品中的铅

Testing lead in Geochemical Exploration Samples by Alternating Current Arc Emission Spectroscopy

本文主要研究了用交流电弧发射光谱法测定地球化学勘查样品中的铅元素。选择锗作为内标线,固体粉末直接分析,避免铅挥发对测定结果产生影响。铅检测限为0.57μg·g^(-1),线性范围为0.83~100μg·g^(-1)。经国家一级标准物质验证,精密度和准确度符合地质勘查相关要求。该方法具有一定的准确性,结果另人满意。

A method in action of testing lead in geochemical exploration samples by alternating current arc emission spectroscopy was developed. Using germanium as internal standard, the solid power samples can be analyzed directly, in order to avoid lead volatilizes. The detection limits lbr lead was 0.57 μg.g-1. The range of determination for lead was 0.83-100μg.g-1. The method has been applied to testing National Reference Materials. The precision and accuracy of the method meet the requirements of geochemical exploration samples testing. Satisfactory results are obtained.