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不经分离直接重量法测定含铌复杂基体中的钽未见文献报导,其主要原因尚未发现特效沉淀剂。中国科学院全属研究所在铌钽定量分离研究中,提出了铌钽在溶液中存在状态以及在很宽的酸度范围内钽与四苯砷氯盐酸(TPAC)形成符合组成比的离子缔合物
Non-isolated direct gravimetric determination of niobium in complex matrix of tantalum has not been reported in the literature, the main reason has not yet found the special precipitant. All the Institute of Chinese Academy of Sciences in the niobium tantalum quantitative separation study, put forward niobium tantalum in solution in the presence of state and in a wide range of acidity tantalum and tetraphenyl arsenic chloride hydrochloric acid (TPAC) to form an ion-association complex composition