[The study on electrochemiluminescence of luminol on ITO glass].

The indium tin oxide(ITO) glass was applied as the electrode to study the electrochemilumuinescent behavior of luminol on its surface. The experimental results indicated that it was an excellent electrode material for ECL of luminol with very high sensitivity. The detection limit of the luminol is as low as 10(-15) mol x L(-1) order of magnitude.

[The determination of glutathione by electrochemiluminescence quenching method].

Glutathione is an important active substance in organisms. Its study and determination are very significant to human being's health and life. In neutral medium, the quenching effect of reduced glutathione on the electrochemiluminescence of luminol-iodide was studied in this paper.

[Determination of total effective value of flavonoids in propolis by quenched electrochemiluminescence analysis].

Propolis is a kind of quality health foodstuff containing flavonoids, which is an important clinical effective component in many Chinese traditional medicines. The flavonoids could be used to reduce or clear free radicals, which manifests its medical functions. But there are no satisfactory methods to analyze the content of flavonoids in propolis.

[UV-vis spectroscopic study of the effect of Cu(II) ions on dopachrome].

The effect of Cu(II) ions on dopachrome has been studied by means of UV-Vis spectra in buffer solution at pH 6.5. Cu(II) ions markedly accelerated the rate of bleaching of dopachrome (DC) at 475 nm and simultaneously exhibited general absorption in the range of 300-800 nm in the system with oxygen removed by bubble nitrogen gas.

[Spectrophotometric determination of vanadium(V) through the formation of a tungstovanadophosphate-TMBPS charge transfer complex].

A new spectrophotometric method was developed for the determination of vanadium(V). The method was based on the formation of tungstovanadophosphate-3,3',5,5'-tetramethylbenzidine-N-propanesulfonic (TMBPS) charge transfer complex. The spectrophotometric measurements were directly carried out at 450 nm and the apparent molar absorptivity was 2.