α-羟基羧酸类络合体系荧光法测定铽、镝  

Fluorometric Determination of Terbium and Dysprosium With α-Hydroxycarboxylic Acids

作　　者：徐岩[1] 黄汉国[1] 

机构地区：[1]唐山工程技术学院化工系,唐山063009

出　　处：《分析化学》1991年第11期1282-1284,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文探讨了苹果酸、酒石乳、苯基乳酸和乳酸等α-羟基羧酸类络合体系荧光法测定铽、镝。发现上述配体均能使铽的荧光增敏,苯基乳酸还能使镝的荧光增敏,并成功地测定了几种稀土氧化物中 Tb_4O_7含量。The possibility of the fluorometric determination of terbium and dysprosium using α-hydroxycarboxylic acids,such as malic acid,tartaric acid,phenyllactic acid(PLA)and lactic acid,has been studied.The experimental results showed that the ligands proposed could enhance the fluorescence of terbium,and PLA could also enhance the fluorescence of dysprosium.The detection limit of terbium and dysprosium with PLA is 0.02 and 0.77ppm, respectively.The content of Tb_4O_7 in several rare earth oxides has been successfully deter- mined at 0.0X% level using PLA as a fluorescer by standard addition method.

关 键 词：铽 镝 荧光法 测定 苯基乳酸 

分 类 号：O614.33[理学—无机化学]