摘要
采用盐酸-氯酸钾消解锡精矿试样,对锌还原碘吸收液吸收砷化氢砷锑钼蓝分光光度法测定锡精矿中砷的方法进行了研究。对试剂影响、共存元素干扰、分离及掩蔽进行了试验。方法的相对标准偏差在1.93%～6.99%之间,加标回收率在93.3%～105.7%之间,结果稳定,重现性好,满足锡精矿中砷的测定。
The concentrate sample is digested by hydrochloric acid - potassium chlorate, the arseno - antimono - molybdenum blue spectrophotometrie method with amine absorption by zinc reduction iodine liquid for determination of arsenic in tin concentrate is researched. And the reagent effect, coexistence elements interference, separation and masking are tested too. The relative standard deviation of the method is 1.93% -6. 99%, and the recovery of standard addition is 93. 3% - 105.7%, the result is stable, and the reproducibility is good, it can meet the requirements of determination of arsenic in tin concentrate.
出处
《云南冶金》
2011年第6期50-52,56,共4页
Yunnan Metallurgy
关键词
砷锑钼蓝分光光度法
砷
锡精矿
碘液吸收砷化氢
arseno-antimono-molybdenum blue spectrophotometrie method
arsenic
tin concentrate
iodine solution absorption of arsine
