摘要
在五氧化二钽基体中加五氧化二铌配成标准溶液,与氟钽酸钾样品在相同条件下经系列处理后进行纸上色层分离,分离后与样品直接进行目视比色。本测定方法的标准误差为0 000104%,相对误差为5 5%,回收率为97%～103%,适合用于含铌量为0 001%～0.0x%的测定。
Nb2O5 liquor is added into the Ta2O5 to form standard solution,then carry out chromatographic separating on paper after series of treatment with potassium fluotantalate sample parent solution.Finally directly take visual colorimetric analysis with sample by this method.The standard error and relative error and is 0.000 104% and 5.5%,respectively recovery is 97%～103%.It is applicable for the sample containing niobium 0.001～0.0x%.
出处
《稀有金属与硬质合金》
CAS
CSCD
2003年第2期31-32,共2页
Rare Metals and Cemented Carbides
关键词
氟钽酸钾
铌
目视比色
potassium fluotantalate
niobium
visual colorimetric analysis
