苦杏仁酸—EDTA—CTMAB体系荧光法测定铽  

Fluorescence spectrophotometric determination of terbium with mandelic acid-EDTA-CTMAB system

作　　者：张俊杰[1] 李国江[1] 李兰英[1] 黄桂铃[1] 

机构地区：[1]河北理工学院化工系,河北唐山063009

出　　处：《河北理工学院学报》2003年第1期113-118,共6页Journal of Hebei Institute of Technology

摘　　要：研究了铽—苦杏仁酸—EDTA—CTMAB体系的荧光性质 ,探讨了荧光体系的组成及影响因素 ,建立了在该体系中测定铽的新方法。在 pH值为 1 2 . 6时 ,由于表面活性剂CTMAB的加入 ,使体系的相对荧光强度有较大的增强。在激发波长 2 45nm和荧光波长 54 7nm处测定铽 ,检测限达 1 0ng/ml。此法应用于合成样品中微量铽的测定 。In this paper,the fluorescence properties of Tb 3+ Mandelic acid Ethylenediamine tetraacetic acid Cetyltrimethy lammonium Bromide system have been investigated.The stoichiometry of fluorescence and the influence of some factors on the system is discussed.A new method for determination of Tb 3+ in this system is developed.The detection limit was observed to be 10ng/ml.Satisfactory results obtained by the proposed method for determination of trace amount of Tb in several synthetic samples.

关 键 词：荧光分析法 铽 苦杏仁酸 EDTA CTMAB 乙二胺四乙酸 溴化十六烷基三甲胺 

分 类 号：O614.341[理学—无机化学] O657.3[理学—化学]