Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid 被引量：1

Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid

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摘要 Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous. The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, shows a constant fluorescence intensity in the pH range of 11.0-12.0. The method has high selectivity and sensitivity as well as low effect from foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu3+, concentration in the range of 0.0029-1.5200 mu g center dot mL(-1) and the limit of detection is 2.90 ng center dot mL(-1). Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous. The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, shows a constant fluorescence intensity in the pH range of 11.0-12.0. The method has high selectivity and sensitivity as well as low effect from foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu3+, concentration in the range of 0.0029-1.5200 mu g center dot mL(-1) and the limit of detection is 2.90 ng center dot mL(-1).

作者 ZHAOJun ZHAOGuohu LIANGHuiguang ZHANGHaobo

机构地区 CollegeofScience

出处《Rare Metals》 SCIE EI CAS CSCD 2005年第2期115-118,共4页 稀有金属（英文版）

基金 This project was financially supported by the Natural Science Foundation of Gansu Province, China (ZR-97-21).

关键词 fluorescent determination EUROPIUM pyridine-2 4 6-tricarboxylic acid LUMINESCENCE fluorescent determination europium pyridine-2,4,6-tricarboxylic acid luminescence

分类号 O614.338 [理学—无机化学] O657.3 [理学—分析化学]

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