电感耦合等离子体原子发射光谱法测定金属锂中21种微量元素  

Determination of twenty-one kinds of micro elements in lithium by inductively coupled plasma atomic emission spectrometry

作　　者：侯列奇[1] 王树安[1] 李洁[1] 郭蓉[1] 费浩[1] 

机构地区：[1]中国核动力研究设计院燃料及材料国家重点实验室,四川成都610005

出　　处：《冶金分析》2007年第11期33-36,共4页Metallurgical Analysis

摘　　要：应用电感耦合等离子体原子发射光谱法测定金属锂中铝、金、钡、钙、钴、铬、铜、铁、铟、镁、锰、钼、镍、铅、钯、铂、锡、钛、钒、钇和锌21种微量元素。选择了元素的分析线，考察了载气流量、硝酸浓度和基体锂对测定的影响。当试液中锂和钠的浓度分别小于12mg／mL和22μg／mL，铝、铁、铬、钙、镍、镁、铅等浓度分别小于10μg／mL时，对选择的分析线的干扰不明显。基体效应通过基体匹配和背景校正克服。试液中锂的浓度为10mg／mL时，元素的测定范围为20-640μg／g。用本法测定一金属锂样品中的21种杂质元素，得到各元素回收率在95．8％～106．3％之间，相对标准偏差（72—6）在1．5％～7．1％范围。Twenty-one kinds of micro elments in metal lithium were determined by inductively coupled plasma atomic emission spectrometry,including Al,Au,Ba,Ca,Co,Cr,Cu,Fe,In,Mg,Mn,Mo,Ni,Pb, Pd,Pt,Sn,Ti,V,y and Zn. The analytical lines were selected. The influence of flow capacity of carrier gas, concentration of nitric acid and matrix lithium on the determination was investigated. When Li and Na in the solution are present in not greater than 12 mg/mL and 22 μg/mL respectively and Al,Fe, Cr,Ca,Ni,Mg and Pb in not greater than 10 μg/mL respectively,the spectral interference on selected analytical lines is negligible. The matrix effect can be overcome by matrix matching and correction of background. The determination ranges of all the elements lie in 20-640 μg/g at the concentration level of 10mg/mL Li. In the use of this method to determination of a metal lithium the recoveries of 95.8%-106. 3% and the relative standard deviations of 1.5%-7. 1 % are obtained.

关 键 词：金属锂 电感耦合等离子体原子发射光谱法 微量元素 

分 类 号：O562[理学—原子与分子物理]