首页|期刊导航|东华大学学报（英文版）|Study of Competitive Chelating Reaction between Lanthanum and Tribromoarsenazo in the Medium of Weak Acid by Capillary Zone Electrophoresis
东华大学学报（英文版）2003，Vol.20Issue(2)：83-88,6.
Study of Competitive Chelating Reaction between Lanthanum and Tribromoarsenazo in the Medium of Weak Acid by Capillary Zone Electrophoresis
Study of Competitive Chelating Reaction between Lanthanum and Tribromoarsenazo in the Medium of Weak Acid by Capillary Zone Electrophoresis
摘要
Abstract
Two kinds of metal chelates of rare earth elements reacted with tribrimoarsenazo formed under the condition of critic acid were observed by simultaneous technique of capillary electrophoresisphotothermal interference spectrometry. The tendency of the conversion between these chelates as functions of the mole ratio of the reagent and the metal, pH value and the elapsing time was investigated. Kinetic equation of competitive chelating reaction between the TBA-La (Ⅲ) and La (Ⅲ) -critic acid were established. It was found that the competitive chelating reaction follows secondorder kinetics, for this second-order reaction, k=5.55 L·mol-1·S-1.关键词
capillary electrophoresis/photothermal/tribrimoarsenazo/competitive chelating reactionKey words
capillary electrophoresis/photothermal/tribrimoarsenazo/competitive chelating reaction分类
化学化工引用本文复制引用
胡涌刚,周培疆,邓延倬,程介克..Study of Competitive Chelating Reaction between Lanthanum and Tribromoarsenazo in the Medium of Weak Acid by Capillary Zone Electrophoresis[J].东华大学学报（英文版）,2003,20(2):83-88,6.基金项目
Supported by the National Natural Science Foundation of China ( No. 20005005 ), Chengguang Project of Wuhan, and Visiting Scholar Foundation of Key Lab in University. （ No. 20005005 ）
