Tieli Z, Huichun Z, Linpei J
Department of Chemistry, Beijing Normal University, P.O. Box 55, Beijing, 100875, PR China.
Talanta. 1999 Jun;49(1):77-82. doi: 10.1016/s0039-9140(98)00364-6.
The sensitized fluorescence intensity of the terbium ion (Tb(3+)) can be notably enhanced after the Tb(3+)-lomefloxacin(LFLX) complex system was irradiated by 365nm ultraviolet light. A photochemical reaction occurs to the irradiated Tb(3+)-LFLX complex. A new Tb(3+)system with intense fluorescence is obtained. On this basis a new sensitive and selective photochemical fluorimetry for the determination of LFLX was established. Under the optimal experimental conditions, the linear range of the determination is 2.0-500x10(-8) mol l(-1) for LFLX, and the detection limit is 6.0x10(-9) mol l(-1).Without any pre-treatment the recoveries of LFLX in human urine and serum were determined.
在铽离子（Tb(3+)）-洛美沙星（LFLX）络合物体系被365nm紫外光照射后，铽离子（Tb(3+)）的敏化荧光强度可显著增强。被照射的Tb(3+)-LFLX络合物会发生光化学反应。得到了一种具有强荧光的新型Tb(3+)体系。在此基础上，建立了一种用于测定LFLX的新型灵敏且选择性好的光化学荧光分析法。在最佳实验条件下，LFLX的测定线性范围为2.0 - 500×10(-8) mol l(-1)，检测限为6.0×10(-9) mol l(-1)。在无需任何预处理的情况下，测定了人尿液和血清中LFLX的回收率。
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