三元配合物停流-动力学分析法测定铝的研究  

Determination of Aluminum in Its Ternary Complex by Stop-Flow Kinetic Method

作　　者：杨屹[1] 蔡汝秀[1] 黄厚评[1] 曾云鹗[1] 高登云[1] 

机构地区：[1]武汉大学化学系

出　　处：《高等学校化学学报》1992年第3期303-306,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：利用自动化动力学分析装置研究了铝与3,5-二溴水杨基荧光酮及表面活性剂形成三元配合物的动力学性质,测定了质子、显色剂及表面活性剂的反应级数及反应活化能。提出了一种简便、快速、精密和准确的分析方法,并用于人发中痕量铝的测定。方法灵敏度较高(ε=1.11×10~5L/mol·cm),大多数元素的干扰均可用动力学方法消除,优于其它测定铝的多元配合物体系。The kinetic characteristic of ternary complex, Al-3,5-dibromosalicylfluorone and surfactant, was studied with automatic kinetic analyzer. The reaction orders of the proton, color reagent, and surfactant were determined. The activation energy of the reaction was measured to be 29. 58 kJ/mol. A simple, rapid, and accurate analytical method for the kinetic determination of aluminum was developed with a high sensitivity(ε=1. 11×105 L/mol·cm). The interference of many ions can be eliminated by kinetic method and it is satisfactory to apply this method to the determination of aluminum in the human hair samples.

关 键 词：铝 停流动力学法 三元配合物 毛发 

分 类 号：O614.31[理学—无机化学]