Results 221 to 230 of about 208,382 (245)

Fe(II) Redox Chemistry in the Environment

Chemical Reviews, 2021
Iron (Fe) is the fourth most abundant element in the earth's crust and plays important roles in both biological and chemical processes. The redox reactivity of various Fe(II) forms has gained increasing attention over recent decades in the areas of (bio) geochemistry, environmental chemistry and engineering, and material sciences.
Jianzhi Huang, Adele Jones, T. David Waite, Yiling Chen, Xiaopeng Huang, Kevin M. Rosso, Andreas Kappler, Muammar Mansor, Paul G. Tratnyek, Huichun Zhang   +9 more
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Spectrophotometric Determination of Fe(II), Fe(III), and Total Fe

Journal of Pharmaceutical Sciences, 1971
Abstract The orderly use of two known reactions [Fe(II) with α,α'-dipyridyl and Fe(III) with ascorbic acid] allowed to take place successively in the same aliquot sample solution provides a procedure for the quantitative determination of Fe(II), Fe(III), and total Fe. The procedure is simple, rapid, and sensitive enough to cope with samples containing
Christos Zachariades, William C. McGavock   +1 more
openaire   +1 more source

Fe(II)EDTA–NO reduction coupled with Fe(II)EDTA oxidation by a nitrate- and Fe(III)-reducing bacterium

Bioresource Technology, 2013
The nitrate- and Fe(III)-reducing bacterium Paracoccus versutus LYM was characterized in terms of its ability to perform Fe(II)EDTA-NO reduction coupled with Fe(II)EDTA oxidation (NO-dependent Fe(II)EDTA oxidation, NDFO). It experienced a single anaerobic FeEDTA redox cycling through NDFO and dissimilatory Fe(III)EDTA reduction in FeEDTA culture.
Xiyang, Dong, Yu, Zhang, Jiti, Zhou, Mingxiang, Chen, Xiaojun, Wang, Zhuang, Shi   +5 more
openaire   +2 more sources

Reduction of U(VI) by Fe(II) during the Fe(II)-Accelerated Transformation of Ferrihydrite

Environmental Science & Technology, 2014
X-ray absorption spectroscopy has been used to study the reduction of adsorbed U(VI) during the Fe(II)-accelerated transformation of ferrihydrite to goethite. The fate of U(VI) was examined across a variety of pH values and Fe(II) concentrations, with results suggesting that, in all cases, it was reduced over the course of the Fe(III) phase ...
Boland, DD, Collins, RN, Glover, CJ, Payne, TE, Waite, TD   +4 more
openaire   +3 more sources

Reactions of carbon monoxide with Fe(II) diethyldithiocarbamate and Fe(II) ethylxanthate

Inorganica Chimica Acta, 1984
Abstract Reactions of carbon monoxide with iron(II) diethyldithiocarbamate and iron(II) ethylxanthate were followed using solution IR spectroscopy. In DMF and CH 3 CN solutions, the only Fe—dithiocarbamate—carbon monoxide complex observed was cis -[Fe(CO) 2 (dedtc) 2 ].
openaire   +1 more source

Redox cycling of Fe(II) and Fe(III) in magnetite by Fe-metabolizing bacteria

Science, 2015
Building a biogeochemical battery Iron acts as both a source and sink of electrons for microorganisms in the environment. Some anaerobic bacteria use oxidized Fe(III) as an electron acceptor, whereas phototrophic bacteria can use reduced Fe(II) as an electron donor. Byrne et al.
Byrne, J. M., Klueglein, N., Pearce, C., Rosso, K. M., Appel, E., Kappler, A.   +5 more
openaire   +5 more sources

Sonolysis of alkylphenols in aqueous solution with Fe(II) and Fe(III)

Chemosphere, 2003
The sonolytic degradation of alkylphenols (APs), such as butylphenol, pentylphenol, octylphenol, and nonylphenol (NP), in water was investigated at a sound frequency of 200 kHz with an acoustic intensity of 6 W cm(-2) under argon, oxygen, and air atmospheres.
Bongbeen, Yim, Youngeok, Yoo, Yasuaki, Maeda   +2 more
openaire   +2 more sources

The Spin Dependence of the Spatial Size of Fe(II) and of the Structure of Fe(II)-Porphyrins

The Journal of Physical Chemistry A, 2004
The question of why the iron displacement out of the porphyrin plane is enhanced in quintet states of singly ligated iron-porphyrin complexes compared to lower spin states and unligated iron-porphyrin is addressed. The spatial size of the Fe2+ atom is analyzed with respect to different spin states, and it is shown that the ion size decreases with ...
Jesus M. Ugalde, Barry Dunietz, Andreas Dreuw, Martin Head-Gordon, Russell J. Boyd   +4 more
openaire   +1 more source

Paramagnetic properties of Fe(II) and Fe(III)

Journal of Chemical Education, 1977
This series of tests is designed to correct the misconception that compounds do not have magnetic properties.
openaire   +1 more source

Dichloroethene reduction by Fe(ii): role of transient Fe(ii) phases

Environmental Science: Processes & Impacts
In this work, we describe the role of freshly precipitated, transient Fe(ii) phases that can catalyze abiotic reduction of cis-DCE.
Caroline E. Chelsvig, Malvika Patial, Drew E. Latta, Paul G. Tratnyek, Anke Neumann, Michelle M. Scherer   +5 more
openaire   +2 more sources