Application of Formaldoxime Colorimetric Method for the Determination of Manganese in the Pore Water of Anoxic Estuarine Sediments

Abstract
The formaldoxime colorimetric method for manganese, previously utilized for freshwater and seawater samples of large volume, has been modified for the analysis of small volume, iron-rich sediment pore water samples. Using as little as 3 ml of sample and the addition of EDTA to destroy the Fe-formaldoxime interference (at concentrations of 9 μM Mnl−1), a precision of 3% is obtained.

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