STUDIES ON DERIVATIVE FLUORIMETRY Ⅳ. DETERMINATION OF TRACE AMOUNT OF TERBIUM THROUGH ITS TERNARY COMPLEX WITH ACETYLACETONE AND EDTA IN THE PRESENCE OF CETYL PYRIDINIUM CHLORIDE  

作　　者：Xin Zhen DU Jin Zhang GAO Jing Wan KANG Guang Bi BAI 

机构地区：[1]Institute of Chemistry,Northwest Normal University,Lanzhou,730070

出　　处：《Chinese Chemical Letters》1992年第10期825-828,共4页中国化学快报(英文版)

基　　金：Project supported by the National Natural Science Foundation of China

摘　　要： Terbium can form a ternary complex having a ratio of 1:1:1 with acetylacetone and EDTA. By adding cetyl pyridinium chloride into the above system, a marked enhancement of fluorescence intensity is observed and the ternary complex becomes more stable than before. For analytical application, the derivative spectrofluorimetric method has high sensitivity and the effect of foreign ions is very low. The optimum conditions were obtained. The calibration graph is linear over 5～100μg/mL.Terbium can form a ternary complex having a ratio of 1:1:1 with acetylacetone and EDTA. By adding cetyl pyridinium chloride into the above system, a marked enhancement of fluorescence intensity is observed and the ternary complex becomes more stable than before. For analytical application, the derivative spectrofluorimetric method has high sensitivity and the effect of foreign ions is very low. The optimum conditions were obtained. The calibration graph is linear over 5~100μg/mL.

关 键 词：EDTA CPC 络合试剂 STUDIES ON DERIVATIVE FLUORIMETRY DETERMINATION OF TRACE AMOUNT OF TERBIUM THROUGH ITS TERNARY COMPLEX WITH ACETYLACETONE AND EDTA IN THE PRESENCE OF CETYL PYRIDINIUM CHLORIDE ITS 

分 类 号：O6[理学—化学]