Investigation of Oscillopolarographic behaviour of fluorescein and its application to Catalytic kinetic analysis

Abstract

In pH 4.9 acetate buffer solution, fluorescein exhibits a sensitive oscillopolarog. wave at -0.50 V (vs. SCE). The oscillopolarog. behavior has been studied. A novel and highly sensitive catalytic method for the determination of ultratrace iridium has been developed based on the catalytic effect of iridium (IV) on the redox reaction between fluorescein and KIO4 in basic medium at 100? A detection limit of 0.04 ng/mL and determination range of 0.08-8.0 ng/mL IR were obtained by the fixed-time method.

Key words: POLAROGRAPHIC ANALYSIS, IRIDIUM, CATALYTIC REACTION, FLUORESCEIN, POTASSIUM IODATE

CLC Number:

O643

Cite this article

JIANG ZHILIANG. Investigation of Oscillopolarographic behaviour of fluorescein and its application to Catalytic kinetic analysis[J]. Acta Chimica Sinica, 1992, 50(5): 484-487.

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