萘啶酮酸体系导数荧光法测定铥、铽  

Determination of thulium,terbium by the first derivative fluorometry using nalidixic acid system

作　　者：李兰英[1] 贾祥琪[1] 黄桂玲 黄汉国 

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》2000年第3期92-97,共6页Journal of Hebei Institute of Technology

摘　　要：在 p H 7.5、 3.0× 1 0 - 4mol/L萘啶酮酸溶液、激发波长为2 80 nm的最佳条件下 ,采用一阶导数荧光技术 ,在荧光波长 476nm处测定 Tm3+、在 540 nm处测定 Tb3+。由于采用导数荧光技术 ,不但消除了 Tb3+ 荧光峰对测定 Tm3+ 的干扰 ,使 Tm3+ 、Tb3+ 的同时测定成为可能 ,还显著提高了 Tm3+ 的灵敏度 ,使 Tm3+ 的检测限达到 0 .0 1 μg/mDetermination of thulium at fluorescence wavelength 476nm and terbium at 540nm in nalidixic acid solution system was studied in this paper by means of the first derivative fluorometry,which not only eliminated spectrometric interference of terbium to the determination of thulium,but also enhanced the sensitivity of determination of thulium.This technique can be used to determine thulium and terbium simultaneously and Detection limit of thulium is 0.01 μg/mL.

关 键 词：萘啶酮酸 导数荧光法 铥 铽 测定 

分 类 号：O655.11[理学—分析化学]