Abstract

The reductive potentiometric stripping analysis (RPSA) of managenese with potassium hexacyanoferrate(II) as reducing agent on a glassy carbon electrode was investigated. This method is more sensitive, more reproducible, more precise and more convenient than the RPSA method for manganese with hydroquinone as reducing agent on a platinum working electrode. The technique was applied satisfactorily to determine micro amounts of manganese in artificial human hair sample solution and vegetables. The pretreatment of the glassy carbon electrode, the processes of anodic preconcentration and subsequent RPSA and interferences are discussed.

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