Studies And Application Of Catalytic Fluorimetric Analysis

The catalytic fluorimetric analysis places more and more role in solving trace analysis, because its low detection limit and high sensitivity et.al. This paper focuses on the application of catalytic fluorimetric analysis in determination of molybdenum( VI), citric acid, vanadium(V) and ascorbic acid. The paper consists of four chapters. In chapter 1, the progress and application of the catalytic fluorimetric analysis are reviewed and the application of the analysis is prospected. Sixty-eight references are cited. In chapter 2,a new method is described for the determination of trace vanadium(V). The optimized conditions (temperature, time and quantity of reagents et.al.) are selected and the mechanism of the reaction has also been discussed. In chapter 3, a new method is developed for the determination of molybdenum(VI). The method is based on the fluorescence quenching of acridine dyes by the reaction product of hydrogen peroxide and potassium iodide with Mo(VI) as a catalyst in the acid medium. The detection limit can reach ng/mL level. The method is applied to determine trace molybdenum( VI) in real samples(tea, bean, mineral water) with satisfactory results. In chapter 4, a method is investigated for the determination of the concentration of activist in real samples, based on the activation effects of citric acid and ascorbic acid on the catalytic system of vanadium(V). The optimized conditions are studied. This method is quick and convenient and has high sensitive.