[Study on the spectrum of the flocculent conformation of polymer ferric sulfate flocculants].

In the present paper, the flocculent conformation and qualities of polymer ferric sulfate flocculants were studied by the ultraviolet-visible spectrum. The spectra of polymer ferric sulfate flocculants at different pH values, the microcosmic flocculent conformation of polymer ferric sulfate flocculants corresponding to some peaks in the spectrum, the reaction mechanism and the effects of different pH value on turbidity and colour removal and described. The absorbance of peaks in the wavelength range of 200-1100 nm all increased with pH value rising from 1.

[Studies on light catalysis oxidation degradation of Malachite Green by Photo-Fenton reagent].

In the present paper, light catalysis oxidation degradation of Malachite Green by Photo-Fenton reagent was researched. The influences of various parameters such as the wave length-absorbency curve of Malachite Green, the concentration-absorbency curve of Malachite Green, initial pH, optimum dosage of Fe2+, optimum dosage of H2O2, different light sources and cation-exchange resin, on dye degradation were researched. Through numerous experiments, the optimum condition for Malachite Green degradation was given.

Catalytic spectrophotometric determination of trace aluminium with indigo carmine.

A new catalytic spectrophotometric method is described for the determination of trace amounts of Al(III). The methods based on catalytic action of Al(III) on the oxidation of indigo carmine (IC) by ammonium persulfate in hexamethylene tetramine-hydrochloric acid ((CH2)6N4-HCl) buffer medium (pH 5.4) and in the presence of surfactant-TritonX-100.