BTAB与铁形成的配合物组成的研究  

Studies on Complex Composition between Iron and 3-(6-Bromine Benzothiazole-2-Matenitrogen)-2,6-Two Hydroxyl Benzoic Acid

作　　者：范志宏[1] 郭安城[2] 

机构地区：[1]山西农业大学文理学院,山西太谷030801 [2]山西大学化学化工学院,山西太原030001

出　　处：《广东微量元素科学》2011年第1期54-58,共5页Trace Elements Science

摘　　要：研究了3-(6-溴苯并噻唑-2-偶氮)-2,6-二羟基苯甲酸(简称BTAB)与铁的配合反应。用摩尔比法、等摩尔连续变化法、平衡移动法和双峰双波长法四种方法详细研究并测定了3-(6-溴苯并噻唑-2-偶氮)-2,6-二羟基苯甲酸与铁显色形成配合物的配合比和稳定常数,建立了光度法测定铁的新方法。结果表明,在溴代十六烷基吡啶溶液存在下,铁与显色剂在pH 6.2的磷酸盐缓冲体系中形成1∶2的红色配合物,稳定常数为5.10×109。The coordination reaction between iron and 3-（6-bromobenzothiazole-2-azo）-2,6-dihydroxy benzoic acid（BTAB）was studied,and using four methods to study the composition and stabilization constant of the complex,including mol compared,successive varied volume,balance mobile and double summit and wavelength methods.It is a new method to analyze the content of iron.The result shows that when existing CPB iron and the color reagent form a red composition of 1∶ 2 during the buffer system of pH 6.2 phosphate,stabilization constant is 5.10×109.

关 键 词：3-(6-溴苯并噻唑-2-偶氮)-2 6-二羟基苯甲酸(BTAB) 铁 配合物组成 

分 类 号：O657.32[理学—分析化学]