EDTA络合滴定法测定锡铋铟合金中的铟  

Determination of indium content in Sn-Bi-In alloy by EDTA complexometric titration

作　　者：许洁瑜[1] 麦丽碧[1] 陈晓东[1] 

机构地区：[1]广州有色金属研究院分析测试中心,广东广州510650

出　　处：《材料研究与应用》2010年第3期231-234,共4页Materials Research and Application

摘　　要：先用乙酸乙酯萃取,再用稀盐酸反萃,可将铟与合金中的锡和铋等干扰元素分离,最后用EDTA标准溶液进行络合滴定,可测得锡铋铟合金样品中铟含量.用该法测铟的回收率在99.62%~100.50%之间,标准偏差小于1%,变异系数为0.42.First by extracting with ethyl acetate and then by back extracting with hydrochloric acid,indium can be separated from Sn and Bi in Sn-Bi-In alloy,finally the amount of Indium is determined by EDTA titration method.So-determined In recovery ranges from 99.62% to 100.50%,and CV is less than 0.42%,and the standard deviation less than 1%.

关 键 词：铟 锡铋铟合金 EDTA 络合滴定 

分 类 号：O655.25[理学—分析化学]