1999•Fuzhou daxue xuebao. Ziran kexue banRequires access

The Study of a New Mn ( II) - Nitrilo Triaceticacid- β- Cyclodexdrin Potassium Periodate- Alizalin Green Catalytic Spectrophotometric System

Gui Fu

Abstract

Anew catalytic spectrophotometric method for the determination of trace amount of Mn( Ⅱ)has been developed. The method is based on the oxidation of alizalin green (AG)by potassium periodate in the presence of β- Cyclodexdrin (β- CD)as an enhancing agent. Thecatalysis ofβ- CDwas usedforthe kineticspectrophotometric determination of Mn( Ⅱ)overtherange 0 ～2-4ng/mL[detection limit0-097ng/mL ,the relative precision for 1-6ng/mLof Mn(Ⅱ)being 0-45 % ( n = 12) , and the sentitivety being increased by 2-5times than thatin the absenceoftheβ- CD. The method can be usedforthe determination of Mn (Ⅱ)in cerealsamples and winesamples with satisfactory results.

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Key concepts: Potassium periodate, Chemistry, Catalysis, Potassium, Periodate, Nuclear chemistry, Environmental chemistry, Biochemistry