停流-荧光动力学分析法测定痕量钛的研究  

Studies on Stopped-Flow Fluorescence Kinetic Method for Determination of Trace Titanium

作　　者：黄厚评[1] 蔡汝秀[1] 高登云[1] 曾云鹗[1] 

机构地区：[1]武汉大学化学系,武汉430072

出　　处：《高等学校化学学报》1992年第12期1513-1516,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：利用自行组装的停流-荧光动力学分析仪,采用停流法汇合流体动力注入技术,研究了钛与3.5-二溴水杨基荧光酮的荧光增强动力学反应性质,讨论了流速、进样时间对方法灵敏度和精密度的影响,提出了一个快速、简便、精确测定钛的分析方法,并用于稀土样品及合成样品中痕量钛的测定.方法检测限为8×10^(-3)ppm,大多数元素的干扰均可用动力学方法消除.The fluorescence kinetic characteristics of binary complex,Ti-3,5-dibromosalicylfluorone,was studied with a fluorescence kinetic analyzer(using the fluorescence spectiophotometer(Model 930,China)equipped with a self-made flowthrough cell).The influence of flow rate and sampling time on the sensitivity and the precision of method were discussed,A simple rapid and accurate method of analysis for the fluorescence kinetic determination of titanium was developed.The interference of many ions can be eliminated by the kinetic method and it is satisfactory to apply this method to the determination of titaniutn in rare earth samples and synthetic sample.The limit of detection is 8×10-3 ppm.

关 键 词：停流技术 钛 荧光测定法 

分 类 号：O614.411[理学—无机化学]