火焰原子吸收光谱法测定精铟中铅  

Direct Determination of Lead in Refined Indium by Flame Atomic Absorption Spectrometry

作　　者：程键[1] 

机构地区：[1]湖南株冶火炬金属股份有限公司质保部分析测试室,湖南株洲412004

出　　处：《岩矿测试》2006年第1期91-92,94,共3页Rock and Mineral Analysis

摘　　要：精铟试样用HCl溶解，在稀HCl介质中，利用氘灯扣背景，消除基体的干扰。使用空气-乙炔火焰，于原子吸收光谱仪波长283．3nm处测定铅，测定范围为0．001％-0．005％，加标回收率为97．8％～103％，相对标准偏差RSD（n=7）≤5％。与其他方法对照，结果相符。A FAAS method for the determination of lead in refined indium was reported. The sample was dissolved with hydrochloric acid. In diluted hydrochloric acid medium, lead was determined by FAAS with air-C2 H2 flame at wavelength of 283, 3 nm. Deuterium-lamp was used to eliminate the matrix effect from indium. The analytical range of the method was 0. 001% -0.005% for lead and the standard addition recovery was 97.8% - 103% with precision of ≤5% RSD（n =7）. The method has been applied to the determination of lead in refined indium samples and the results were in agreement with those provided by phenyl fluorescence spectrometry and AES.

关 键 词：火焰原子吸收法 铅 铟 氘灯扣背景干扰 

分 类 号：O657.31[理学—分析化学] O614.433[理学—化学]