Fluorescence Determination of Europium with Pyridine -2,4,6-Tricarboxylic Acid
Europium can form a stable chelate with pyridine - 2,4,6 - tricarboxylic acid(PTA) having a ratio of 1:1 at a aqueous medium. The system, having the maximum excitation and emission wavelengths at 311. 0nm and 616.3nm, separately, shows a constant fluorescence intensity in the pH range of 10.0~12. 0. The method has high selectivity and sensitivity as well as the low effect of foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu3+ concentration in the range of 0.0029~ 1.520 μm/mL and the limit of detection is 2.90 ng/mL.
Pyridine-2,4,6- tricarboxylic acid Europium Fluorescent determination
Zhao Jun Zhao Guohu Liang Huiguang Zhang Haobo
Bask Science Department, Gansu AgricμLtural University, Lznahou 730070, China
国内会议
兰州
英文
422-424
2003-12-01（万方平台首次上网日期，不代表论文的发表时间）