钒/二溴羟基苯基荧光酮/溴化十六烷基三甲基铵体系显色反应的研究  

Study on the colour reaction of vanadium with dibromo-hydroxylphenylflourone and cetyltrimethylammonium bromide

作　　者：吴煜[1] 

机构地区：[1]常州工程职业技术学院应化系,江苏常州213004

出　　处：《天津化工》2004年第6期26-27,共2页Tianjin Chemical Industry

摘　　要：详细研究了显色剂二溴羟基苯基荧光酮(DBHPF)在表面活性剂溴化十六烷基三甲基铵(CTMAB)存在下与钒(V)形成配合物的条件。在pH=5.0的乙酸—乙酸钠缓冲液中,在CTMAB存在下,钒(V)与DBHPF生成紫红色络合物,其最大吸收峰在562nm波长处,摩尔吸光系数ε=5.46×104L·mol-1·cm-1。钒含量在0～10mg/25ml范围内符合比耳定律。如采用适当的分离手段,可用于测定某些复杂试样中的微量钒。Condition of Colour reaction of Vanadium with DBH-PF in the presence of Cetyltrimethylammonium Bromide were studied. In the pH=5.0 buffer solution of CH3COOHCH3COONa, vanadium reacts with DBH-PF and Cetyltrimethylammonium Bromide to form a complex with maximum absorption at 562 nm. The molar absorptiuity is 5.46×104 L·mol-1·cm-1.Beer's law is obeyed in the loncentration range of 0～10 mg/25 ml for V(V). The method can be applied to determine micioamounts of vanadium in complex sampls by proper isolated method.

关 键 词：光度测定 钒 二溴羟基苯基荧光酮 

分 类 号：O644.14[理学—物理化学]