2002•Chinese Journal of Spectroscopy LaboratoryRequires access

Determination of Trace Manganese by Catalytic Kinetic Spectrophotometry──Mn(II)-NTA-Alizarin Violet 3B-KIO_4 System

Xu Bin Suo

Abstract

A new 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 of alizarin violet 3B by potassium periodic acid in the presence of nitrilotriacetic acid as an activator in borax medium.The linear range of the method is 0.030-6.0μg/L for manganese.The detection limit is 1 0×10 -11g/mL.The method has been applied to the determination of trace manganese in water and tea with satisfactory results.

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Key concepts: Manganese, Nitrilotriacetic acid, Potassium periodate, Chemistry, Spectrophotometry, Detection limit, Catalysis, Nuclear chemistry