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AN-T-141

Automatic photometric determination of manganese using the Optrode


Summary

Manganese is determined as Mn(II) in aqueous solutions at pH 10 with Eriochrome Black T as indicator. Ascorbic acid is added to ensure that manganese is present in its bivalent form. The precipitation of water-insoluble manganese hydroxide is prevented by adding triethanolamine (TEA). The Optrode is used for detection at a wavelength of 610 nm.

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Metrohm Nordic AS

Sandviksveien 26
1363 Høvik

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