ICP-AES法测定镍铂合金中16个杂质元素

Determination of 16 impurity elements in nickel-platinum alloy with by ICP-AES

为提高电感耦合等离子体原子发射光谱(ICP-AES)法分析检测镍铂合金中杂质含量的准确性,针对Ni-5Pt、Ni-15Pt、Ni-60Pt展开全面的干扰效应研究,对受基体效应严重的Pb、Sn采用基体分离法测定;对直接测定有干扰的元素,通过调节基体与被测元素的测定浓度比例,对应其杂质含量选择整理出的谱线,即能达到准确检测范围;最后通过加标回收的方式验证方法准确度。方法检测范围:Ag、Au:(5~50)×10^(-6);Al、Co、Cr、Cu、Mg、Mn、Pd、Pb、Si、Sn、Ti、Zn、Zr:(5~500)×10^(-6);Fe:(5~1000)×10^(-6)。能满足镍铂靶材在市场交易中所需的杂质分析要求。

In order to improve the accuracy of impurity content analysis in nickel-platinum alloys using inductively coupled plasma atomic emission spectroscopy(ICP-AES),a comprehensive study of interference effects was conducted for Ni-5Pt,Ni-15Pt,and Ni-60Pt alloys.The research focused on the following aspects.For Pb and Sn,which are significantly affected by ICP-AES after matrix separation was employed for their determination.For elements with interference,by adjusting the concentration ratio between the matrix and the target element,the corresponding spectral lines were selected to achieve accurate detection within a defined range of impurity concentrations.This approach ensured the method's accuracy.Ultimately,the accuracy of the method was validated through the use of standard addition recovery.The detection ranges for the method were as follows:(5~50)×10^(-6)for Ag and Au;(5~500)×10^(-6)for Al,Co,Cr,Cu,Mg,Mn,Pd,Pb,Si,Sn,Ti,Zn and Zr;and(5~1000)×10^(-6)for Fe.This method can meet the impurity analysis requirements for nickel-platinum target materials in market transactions.