ICP——AES法测定硫酸中铁的不确定度评定

Uncertainty Assessment on the Determination of Iron in Sulphuric Acid by ICP-AES Method

通过对硫酸中铁含量的分析,找出了影响测定结果的各个分量,影响测定结果的分量主要有:分度吸量管的体积、容量瓶的体积、样品的均匀性、样品处理过程以及线性拟合等。作者根据GB/T 601-2002中对化学分析方法测量的不确定度的要求,对ICP——AES法测定硫酸中铁含量的不确定度进行了评定。

The factors that affect the determination result of ferrous content were found by analyzing ferrous content in sulfuric acid.Main factors are as follows： the volume of graduated pipettes and volumetric flasks,sample uniformity,sample processing and linear fitting,etc.This paper assesses the CP-AES method about uncertainty of ferrous content in sulfuric acid,basing on the requirement for the chemical analysis of uncertainty determination in GB/T601-2002.