Abstract：A new fluorescence reagent, 3-(4′-fluorophenyl)-5-(2′-arsenoxylphenylazo)-rhodanine，was synthesized. The structure of the reagent was clarified by elemental analysis and IR. At pH 5.4，the reagent can react with trace bismuth (Ⅲ) to form a chelate which reduces the fluorescence intensity greatly. And when λex／λem=305／407 nm, the fluorescence is intensive. There is a linear relationship between the decrease of fluorescence intensity and the concentration of bismuth (Ⅲ) in the range of 0-0.025 μg·mL-1. The detection limit is 1.2×10-10 g·mL-1. A new method of fluorescence spectrophotometric determination of bismuth (Ⅲ) was developed.
于京华1, 2，欧庆瑜2，卢 燕1，王来国1，李 涛1 . 新试剂3-对氟苯基-5-(2′-胂酸基苯偶氮)绕丹宁的合成及荧光法测定铋的研究 [J]. 光谱学与光谱分析, 2004, 24(09): 1093-1095.
YU Jing-hua1, 2，OU Qing-yu2，LU Yan1，WANG Lai-guo1，LI Tao1 . Study on the Synthesis of a New Reagent 3-(4′-Fluorophenyl)-5-(2′- Arsenoxylphenylazo)-Rhodanine and the Fluoresence Determination of Bismuth(Ⅲ) . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(09): 1093-1095.
