Spectrofluorimetric determination of terbium（Ⅲ） by fluorescence enhancement system of Tb-TPA-Triton X-100 by La3+
来源期刊：Rare Metals2003年第2期
论文作者：ZHAO Guohu and ZHAO JunBasic Science Department, Gansu Agricultural University, Lanzhou , China (Received --)
文章页码：112 - 115
摘 要：<正> The phenomenon of fluorescence enhancement for the system of terbium（b!） with terephthalic acid （benzene-1,4-dicarboxylic acid （TPA）） in the presence of an excess of La3+ in Triton X-100 aqueous solution has been studied. The fluorescence intensity of Tbb!-TPA system can be greatly increased by La3+. The intermolecular transfer of energy was responsible for the mechanism of the fluorescence enhancement. Triton X-100 plays an important role for the stabilization of the system. The system, having the maximum excitation and emission wavelengths at 256 nm and 546 nm, respectively, shows a constant fluorescence intensity over the pH range between 4-6. The fluorescence intensity is a linear function of Tb3+concentration in the range of 1.00
ZHAO Guohu and ZHAO JunBasic Science Department, Gansu Agricultural University, Lanzhou 730070, China (Received 2002-04-29)
摘 要：<正> The phenomenon of fluorescence enhancement for the system of terbium（b!） with terephthalic acid （benzene-1,4-dicarboxylic acid （TPA）） in the presence of an excess of La3+ in Triton X-100 aqueous solution has been studied. The fluorescence intensity of Tbb!-TPA system can be greatly increased by La3+. The intermolecular transfer of energy was responsible for the mechanism of the fluorescence enhancement. Triton X-100 plays an important role for the stabilization of the system. The system, having the maximum excitation and emission wavelengths at 256 nm and 546 nm, respectively, shows a constant fluorescence intensity over the pH range between 4-6. The fluorescence intensity is a linear function of Tb3+concentration in the range of 1.00
关键词：
