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Electron Paramagnetic Resonance Spectroscopy in Studies of the Chemical States of Manganese in Particulate Substances in River Waters and of the Reduction of Manganese by Tannery Effluents by Tetsuhiko Yoshimura; Tomio Ozaki; Toshihide Okuno is a Chemistry article available to read on EtoBox.

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The chemical states of manganese(I1) species in particulate substances in river water, with and without the influence of tannery effluents, were investigated by the use of electron paramagnetic resonance (e.p.r.) spectroscopy. In the e.p.r. spectra of the particulate substances in river water, the six-line signal characteristic of Mn(I1) was distinctly observed. The relative intensity of the Mn(I1) signal was found to be higher in the lower reaches of a river, and especially below tannery effluent inflows, suggesting that manganese in river water is reduced by natural and artificially added organic compounds. It is shown that the reduction of manganese in river sediments and manganese dioxide by tannery effluents can afford an insoluble Mn(I1) species at pH 11 and a soluble Mn(I1) species at pH 7.

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Author

Tetsuhiko Yoshimura; Tomio Ozaki; Toshihide Okuno

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0003-2670)

Published

1986

Language

EN

Field

Chemistry (Physical Sciences)