Determination of microamount of fluoride by the quenching fluorescence

Abstract

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

CLC Number:

O657
X8

Cite this article

CUI WANCANG;MI LI;SHI HUIMING. Determination of microamount of fluoride by the quenching fluorescence[J]. Acta Chimica Sinica, 1987, 45(9): 913-915.

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荧光熄灭法测定微量氟的研究和应用