ICP-AES法测定镍镧合金中Si、Mn、Mg、Cu、Zn、Cd、Pb和Zr元素  

Determination of impurity elements Si,Mn,Mg,Cu,Zn,Cd,Pb,and Zr in nickel lanthanum alloy by inductively coupled plasma atomic emission spectrometry

作　　者：庞晓辉[1,2,3] 李亚龙 王桂军[1] 高颂[1] 房丽娜[1] 白雪峰[1] 

机构地区：[1]中航工业北京航空材料研究院,北京100095 [2]航空材料检测与评价北京市重点实验室 [3]中航(试金石)检测科技有限公司

出　　处：《分析仪器》2014年第4期60-63,共4页Analytical Instrumentation

摘　　要：介绍了采用电感耦合等离子体发射光谱法（ICP -AES）测定镍镧合金中杂质元素Si、Mn、Mg、Cu、Zn、Cd、Pb、Zr的方法，样品采用盐酸、硝酸溶解，进行了仪器工作参数和待测元素分析线的选择试验，确定了仪器最佳工作条件，考察了合金基体和共存元素对待测元素的影响，确定了各待测元素分析线分别为Si 251.611 nm、Mn 257.610 nm、Mg 285.213 nm、Cu 324.752 nm、Zn 213.857 nm、Cd 214.440 nm、Pb 220.353 nm、Zr 343.823 nm。通过基体匹配消除基体的影响，实现了用电感耦合等离子体原子发射光谱法测定镍镧合金中杂质元素的含量。进行了加入回收试验，回收率在80～108％之间，方法的检出限是0.0003～0.015μg/m L ，相对标准偏差小于8％。A method for determination of impurity elements in nickel lanthanum alloy by inductively coupled plasma atomic emission spectrometry （ICP-AES ）was proposed. All the influencing factors on spectrum measuring were investigated.The sample was decomposed by mixed acid（HCL ,HNO3 ） ,the ex-periment of instrument parameters ,selection of analysis lines were studied ,the optimal determination conditions of instrument were obtained ,the analytical lines were Si 251.611 nm ,Mn 257.610 nm ,Mg 285.213 nm ,Cu 324.752 nm ,Zn 213.857 nm ,Cd 214.440 nm ,Pb 220.353 nm ,Zr 343.823 nm ,respec-tively ,the effect of matrix and coexist elements on the determination was carried out. The matrix effect was corrected by matrix matching. The detection limits were 0.0003-0.015 μg/ml ,the recovery rates were from 80% to 108% ,the RSD were less than 8% .

关 键 词：电感耦合等离子体原子发射光谱法 镍镧合金 杂质元素 

分 类 号：TG115.3[金属学及工艺—物理冶金]