摘要
经萃取分离富集后，在ｐＨ２．６的苯二甲酸氢钾ＨＣｌ介质中，用电流氧化溶出计时电位法测定地质物料中痕量Ｉｎ。方法检出限为０．０１μｇ／ｇ，标样中Ｉｎ的含量为０．１０μｇ／ｇ时的方法精密度（ＲＳＤ，ｎ＝１１）为８．７６％，加标回收率为９８％～１０５％。应用此方法测定了国家一级地球化学标准参考物质（ＧＳＲ１～６，ＧＳＳ１～８，ＧＳＤ９～１２）中的痕量Ｉｎ。
A method is developed for the determination of trace indium in geological samples.Indium is separated and preconcentrated by solvent extraction and determined by current oxidating stripping chronopotentiometry.The detection limit for In is 0.01 μg/g. The standard recovery is 98%～105% and the relative standard deviation is 8.76% ( n =10) for 0.10 μg/g of In. Some geochemical reference materials are analyzed by this method and the results are in good agreement with certified values.
出处
《岩矿测试》
CAS
CSCD
北大核心
1996年第3期183-187,共5页
Rock and Mineral Analysis
基金
中国地质勘查技术院八五科研项目
关键词
溶出计时电位法
地质物料
铟
电流氧化
stripping chronopotentiometry, geological materials, indium
