Arsenic Oxidation State in the Presence of Microorganisms: Examination by Differential Pulse Polarography
- 1 January 1973
- journal article
- research article
- Published by Taylor & Francis in Environmental Letters
- Vol. 5 (1) , 53-61
- https://doi.org/10.1080/00139307309435512
Abstract
Differential pulse polarography was used to monitor changes in the oxidation state of arsenic when arsenic oxyacids were acted upon by microorganisms. Arsenite is chemically altered in raw sewage, activated sludge, and sewage effluent under aerobic conditions; it was shown that in the presence of oxygen, activated sludge oxidizes arsenite to arsenate. Activated sludge under anaerobic conditions first reduces arsenate to arsenite. At longer times the arsenite apparently is further reduced. Aerobic cultures of Pseudomonas fluorescens also reduce arsenate to arsenite.Keywords
This publication has 6 references indexed in Scilit:
- Pulsed source, time resolved phosphorimetry determination of phosphorescence lifetimesAnalytical Chemistry, 1973
- Spectrophotometric determination of arsenite, arsenate, and phosphate in natural watersAnalytica Chimica Acta, 1972
- Biosynthesis of dimethylarsine by methanobacteriumBiochemistry, 1971
- Arsenic in Detergents: Possible Danger and Pollution HazardScience, 1970
- Pulse polarographyAnalytical and Bioanalytical Chemistry, 1960
- Bacterial Oxidation of ArseniteNature, 1949