砷锑钼蓝分光光度法测定二氧化锡中砷

对砷锑钼蓝分光光度法测定二氧化锡中砷的各项条件进行了试验,研究了二氧化锡试样的分解方法试验、主要存在元素对测定砷的干扰试验.对方法的准确度和精密度进行了考察,方法测定结果稳定,重现性好,适于二氧化锡中0.0005％ ～0.050％砷的测定.纳入了国家标准GB/T23274-2009《二氧化锡化学分析方法》.

Determination of Arsenic in Stannic Oxide by Molybdoantimonyarsenate Blue Spectrophotometric Method

Each conditions of the determination of arsenic in stannic oxide by molybdoantimonyarsenate blue spectrophotometric method is tested,the decomposition method of stannic oxide sample and the interference of the major existing elements in arsenic detemination are researched.The accuracy degree and precision degree of this method has been investigated,which show that the determination result is stable and has good reproducibility,and this method is suitable for determination of arsenic in stannic oxide with the content between 0.0005％ ～0.050％.The above mentioned method comes into the national standard GB/T23274-2009 Methods for Chemical Analysis of Stannic Oxide.