极谱法测定锌、锑渣氧粉中的铟  

Determination of Indium in Zinc and Antimony Oxide Flue Dust Samples by Polarography

作　　者：梁信源[1] 蔡卓[1] 黎铉海[1] 张利芳[1] 

机构地区：[1]广西大学化学化工学院,南宁市530004

出　　处：《光谱实验室》2012年第3期1311-1314,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金(51064002)

摘　　要：提出了以溴化钾-水杨酸-硫酸羟胺-硫酸溶液为底液,采用单扫描极谱法测定锌、锑渣氧粉中铟的新方法。实验条件下,铟于-0.59V(相对于饱和甘汞电极)处产生一个灵敏的极谱波。结果表明,铟的峰电流与其浓度在0.008—40μg/mL范围内有良好的线性关系,检出限为0.002μg/mL。用本法测定实际样品中的微量铟,其相对标准偏差为0.6%—1.5%,加标回收率为95.3%—102.8%,结果满意。A new method was proposed for determination of indium in zinc and antimony oxide flue dusts by single sweep polarography,with potassium bromide-salicylic acid-hydroxylamine sulfate-sulfuric acid solution as supporting electrolyte.Under the optimal conditions,a sensitive polarographic wave of indium was observed at-0.59V（vs.SCE）.The experimental results showed that the peak current of indium had a good linear relationship with its concentration in the range of 0.008—40μg/mL,the detection limit was 0.002μg/mL.This method has been used in the determination of micro-amount indium in real samples with RSD in the range of 0.6%—1.5% and standard addition recovery in 95.3%—102.8%.The results were satisfactory.

关 键 词：锌渣氧粉 锑渣氧粉 铟 极谱法 

分 类 号：O657.14[理学—分析化学]