银氧化锡合金材料中锡量的测定  

Determination of tin content in silver-tin oxide alloy material

作　　者：徐思婷 王立世[1] 陈小兰 

机构地区：[1]华南理工大学化学与化工学院,广东广州510641 [2]广东省工业分析检测中心,广东广州510650

出　　处：《材料研究与应用》2017年第3期202-206,共5页Materials Research and Application

基　　金：广东省科学院科研平台建设专项资助(2016GDASPT-0316;2016GDASPT-0201)

摘　　要：采用碘酸钾滴定法测定银氧化锡合金材料中的锡含量.先用硝酸分解样品,以铁为载体,用氨水分离主体银.然后将酸不溶物以混合熔剂在高温熔融,盐酸浸取熔融物,最后用铝片还原碘酸钾滴定法测定锡含量.该法的样品加标回收率为98.30%~100.58%,相对标准偏差为0.42%~0.51%.该方法的精密度及结果的准确性能满足检测的要求.A method for the determination of silver-tin oxide in alloy material by potassium iodate titrimetric was described. Samples were dissolved into nitric acid,with iron as the carrier, and main silver was extracted by ammonia. With the mixed flux, acid insolubles were melted at high temperature. After that, hydrochloric acid leach the liquid melts. The amount of tin was calculated by the method of aluminium reduction potassium iodate titration. With 98. 30% -100.58% of recovery and 0.42%-0.51% of relative standard deviation. The accuracy and precision of the method were able to satisfy with the detection requirements.

关 键 词：银氧化锡 锡 碘酸钾滴定法 

分 类 号：O655.23[理学—分析化学]