Spectrophometric Determination of Niobium with 5—Br—PADAP[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1981,20(1):70-76.DOI:
5—Br—PADAP分光光度测定铌
摘要
Abstract
2-[5-Bromo-2-pyridylazo]-5-diethylaminophenol(5-Br-PADAP)is a highly sensitivespectrophotometric reagent for niobium.It reacts with Nb(V)in acid medium(PH 0.5-0.8)to form a violet complex which has a maxium peak at 610nm.Ta(V)