摘要
本试验采用逆王水-氢氟酸溶解MHC合金,建立电感耦合等离子体原子发射光谱法(ICP-AES)测定MHC合金中铪、锆元素的分析方法。对溶解酸选择、溶样时间、基体影响、谱线选择等进行讨论。结果表明,基体钼影响测定结果,采用基体匹配消除干扰,优选出339.802 nm为铪的分析谱线,343.823,327.305 nm为锆的分析谱线。最优条件下测定MHC合金,工作曲线线性相关系数在0.999以上,铪元素的检出下限为0.003%,锆元素的检出下限为0.001%,测定结果相对标准偏差(RSD,n=11)小于3%,回收率为95.00%~105.00%。
Inverse aqua regia-hydrofluoric acid was used to dissolve MHC alloy,and an analytical method was established for the determination of hafnium and zirconium in MHC alloy by inductively coupled plasma atomic emission spectrometry(ICP-AES).The selection of dissolved acid,sample dissolution time,matrix influence,spectral line selection,etc.are discussed.The results show that the matrix molybdenum affects the measurement results,and matrix matching is used to eliminate the interference.The analytical lines of 339.802 nm for hafnium and 343.823,327.305 nm for zirconium were optimal.The proposed method has been applied to determine the hafnium and zirconium in molybdenum-hafnium-carbon alloy,the linear correlation coefficients were all above 0.999,the detection limits for hafnium and zirconium was 0.003%and 0.001%respectively,the recovery was 95.00%~105.00%,and the relative standard deviation(RSD,n=11)was less than 3%.
作者
赵欢娟
晁小涛
王小静
郭姣姣
石科学
杨军红
Zhao Huanjuan;Chao Xiaotao;Wang Xiaojing;Guo Jiaojiao;Shi Kexue;Yang Junhong(Xi’an Hantang Analysis and Testing Co.,Ltd.,Xi’an 710016,China)
出处
《山东化工》
CAS
2022年第24期120-121,125,共3页
Shandong Chemical Industry
关键词
ICP-AES
MHC合金
铪
锆
inductively coupled plasma atomic emission spectrometry
Molybdenum Hafnium Carbon alloy
hafnium
zirconium
