铌(V)络阴离子选择性电极的研制  

A Study of Liquid Memberane Complex Anion of Niobium-Tartaric Acid Electrode Based on Trioctylhexadecylammonium Site

作　　者：黄杉生[1] 朱元保[1] 鄢国强 Huang Shasheng;Zhu Yuanbao;Yan Guoqiang(Hunan University,Changsha)

机构地区：[1]湖南大学

出　　处：《高等学校化学学报》1984年第5期643-645,共3页Chemical Journal of Chinese Universities

摘　　要：铌的测定已有综述[1-4],迄今铌的测定主要采用光度法.ШΠИГУН等[5]曾报导以铌(Ⅴ)-酸-四苯钾离子缔合物作活性物质的铌电极,线性范围为1.0×10^(-2)—3.2×10^(-5)M.我们研制了基于铌(Ⅴ)-有机酸-季铵盐离子缔合物的铌络阴离子电极,系统地测试了电极的性能并将电极初步用于矿物中铌的测定,结果令人满意.The study of niobium-tartaric acid complex anion electrode based on trloctylhexadecylammonium site have been described.Electrodes prepared from dinenylphthalate shows the best performance characteristics and has been studied in more detail.The Nernstian response range of the electrode is from 10^(-2) down to 5.0×10^(-6)M,the detection limit being 3.5×10^(-6)M.They are found satisfactory in the lifetime,response time,selectivity and stability.The proposed electrode has been testified by determining niobium concentration of mineral.

关 键 词：离子缔合物 铌(Ⅴ) 光度法 活性物质 季铵盐 线性范围 络阴离子 有机酸 

分 类 号：O65[理学—分析化学]