吐温80存在下钛与3,5-二溴水杨基荧光酮显色反应的研究及应用  

Study on the color reaction of titanium with 3,5dibromosalicylfluorone in the presence of Tween80 and its application

作　　者：涂平[1] 刘延湘[1] 高登云[2] 汤芹[1] 

机构地区：[1]江汉大学化学与环境工程学院,湖北武汉430019 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《冶金分析》2002年第5期49-50,共2页Metallurgical Analysis

摘　　要：研究了吐温 80存在下,钛与3,5 二溴水杨基荧光酮显色反应的条件。结果表明,在0 10mol/LH2SO4中,钛与显色剂形成稳定的1∶2橙红色胶束络合物,络合物稳定48h以上,λmax=539 2nm,ε539 2=2 76×105,钛含量在0～15μg/25mL范围符合比尔定律。方法快速,准确,选择性好,用于测定合金钢中微量钛,结果满意。The optimal color reaction condition of Ti*$with the chromogenic reagent 3,5dibromosalicylfluorone(DBSAF)in the presence of surfactant Tween80 was studiedThe results showed that in the sulfuric acid solution of 010mol/L Ti*$ with DBSAF could form an orangered micellar complex in the mole ratio of 1∶2 The maximum absorption is at 5392nmThe apparent molar absorptivity is 276×105 L·mol-1·cm-1Beer's law is obeyed in the concentration range of 0-15μg/25mLThe method can be used for the determination of Ti in some alloy steel with satisfactory results

关 键 词：吐温-80 钛 二溴水杨基荧光酮 显色反应 分光光度法 

分 类 号：TG115.3[金属学及工艺—物理冶金]