关键词: 荧光分析, 水质分析, 环境监测, 氟, 锆, 磺酸, 猝灭效应, 羟基喹啉类

Several fluorimetric systems were investigated for possible application in the determination of trace amts. of F- based on the fluorescence quenching principle. The fluorescence of Zr-8-hydroxyquinoline-5-sulfonic acid chelate (I) was 68% quenched in the presence of 1 mg F-. The optimum reaction conditions, composition, and apparent stability constant of I were determine The sensitivity of the method is 0.002 mg F-/mL. The F- content of water samples was determine with satisfactory accuracy and precision.

Key words: FLUORIMETRIC ANALYSIS, WATER QUALITY ANALYSIS, ENVIRONMENTAL MONITORING, FLUORINE, ZIRCONIUM, SULFONIC ACID, QUENCHING EFFECTS, HYDROXY QUINOLINES