2003•Trace Elements ScienceRequires access

Determination of Trace Manganese by Catalytic Kinetic Spectrophotometry

Yan Jin

Abstract

A catalytic spectrophotometric method for determination of trace manganese(Ⅱ) was developed. The method is based on the catalytic effect of manganese(Ⅱ) on the oxidation reaction of morin by H 2O 2 leading to a decoloration of morin. The range of determination for Mn(Ⅱ) is 0 005～0 060 μg/25mL. The detection limit of the method is 7 8×10 -10 g·mL -1 . The method has been applied to the determination of trace manganese in rice with satisfactory results.

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Key concepts: Manganese, Morin, Detection limit, Chemistry, Catalysis, Spectrophotometry, TRACE (psycholinguistics), Linear range