منابع مشابه
Photoinduced oxidation of a water-soluble manganese(III) porphyrin.
The photoinduced oxidation of tetra(N-methyl-4-pyridyl)porphyrinmanganese(III) has been achieved in homogeneous solution. The manganese porphyrin was used as an electron donor in a three-component system with tris-(2,2'-bipyridine)ruthenium(II) as the photosensitizer and chloropentaamminecobalt(III) as the electron acceptor. The photooxidized manganese porphyrin is unstable in aqueous solution,...
متن کاملMicrobial Manganese ( Iii ) Reduction Fueled by Anaerobic Acetate Oxidation
Background: Microbial manganese (Mn) cycling in marine and freshwater environments is generally assumed to consist of Mn oxidation in oxic water columns and Mn(IV) oxide reduction in anoxic sediments [1] as the only two bioavailable Mn redox species. This dogma was recently overturned with the discovery that soluble Mn dominates the soluble Mn pool at μM concentrations in suboxic environments [...
متن کاملMicrobial manganese(III) reduction fuelled by anaerobic acetate oxidation.
Soluble manganese in the intermediate +III oxidation state (Mn3+ ) is a newly identified oxidant in anoxic environments, whereas acetate is a naturally abundant substrate that fuels microbial activity. Microbial populations coupling anaerobic acetate oxidation to Mn3+ reduction, however, have yet to be identified. We isolated a Shewanella strain capable of oxidizing acetate anaerobically with M...
متن کاملGeomicrobiology of manganese(II) oxidation.
Mn(II)-oxidizing microbes have an integral role in the biogeochemical cycling of manganese, iron, nitrogen, carbon, sulfur, and several nutrients and trace metals. There is great interest in mechanistically understanding these cycles and defining the importance of Mn(II)-oxidizing bacteria in modern and ancient geochemical environments. Linking Mn(II) oxidation to cellular function, although st...
متن کاملMicrobial formation of manganese oxides.
Microbial manganese oxidation was demonstrated at high Mn concentrations (5 g/liter) in bacterial cultures in the presence of a microalga. The structure of the oxide produced varied depending on the bacterial strain and mode of culture. A nonaxenic, acid-tolerant microalga, a Chlamydomonas sp., was found to mediate formation of manganite (gamma-MnOOH). Bacteria isolated from associations with c...
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ژورنال
عنوان ژورنال: Journal of the agricultural chemical society of Japan
سال: 1984
ISSN: 0002-1407,1883-6844
DOI: 10.1271/nogeikagaku1924.58.1225