he recent development of spectrophotometric analysis of tantalum and niobium is described in china. Various coloing reagents and conditions of coloing reactions of tantalum and niobium are presented. The work for enhancing the sensitivity of analysis and improving selectivity of the process is cited.
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晋勇.国内钽铌光度分析的进展[J].稀有金属材料与工程,1996,(3):45~51.[Jin Yong. Recent Development of Spectrophotometric Analysis of Tantalum and Niobium in China[J]. Rare Metal Materials and Engineering,1996,(3):45~51.] DOI：[doi]