邻硝基苯基荧光酮-钛-吐温-40体系分光光度研究及硅铁合金中钛的测定  

Spectrophotometric Study of Ti with ONPF Tween 40 System and Determination of Ti in Ferro Silicon

作　　者：郭德济[1] 王光明[1] 刘安学 程坚平[2] 陈金木[2] 缪林 

机构地区：[1]华东冶金学院化工系 [2]马钢股份公司钢铁研究所

出　　处：《光谱实验室》1998年第5期105-108,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：系统研究邻硝基苯基荧光酮与钛的显色反应，试验多种表面活性剂对体系的作用及相应的光度性质，从而确定Ｔｉ（Ⅳ）－ＯＮＰＦ－Ｔｗｅｅｎ－４０为较佳体系，在０．０８４—０．１５ｍｏｌ／ＬＨＣｌ介质中形成紫红色配合物，其波长在５３０ｎｍ处的表观摩尔吸光系数ε为１．７９×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，配合物组成中Ｔｉ∶ＯＮＰＦ＝１∶４，钛浓度在０—１．２μｇ／１０ｍＬ范围内服从比耳定律。应用于直接测定硅铁合金中钛，结果满意。The colour reactions of titanium with ONPF were investigated.The effects of surfactants on the colour reaction systems and their spectrophotometric property have been tested.Ti(Ⅳ) ONPF Tween 40 system is better than others.Ti(Ⅳ) ONPF Tween 40 forma purplish red complex in the medium of 0.084-0.15mol/L HCl,its apparent molar absorptivity is 1.79×10 5L·mol -1 ·cm -1 at 530nm.The complexation ratio is Ti∶ONPF=1∶4.Beer′s law is obeyed in the range of 0-1.2 μg/10mL for Ti.It has been applied to the direct determination of trace Ti in ferro silicon with satisfactory results.

关 键 词：钛 邻硝基苯基荧光酮 吐温-40 光度法 硅铁合金 测定 分析 

分 类 号：TF64[冶金工程—钢铁冶金]