Journal ArticleDOI
Dissolution and pyritization of magnetite in anoxie marine sediments
TLDR
In this article, the rate of magnetite dissolution is proportional to the concentration of dissolved pore water sulfide and the surface area of the magnetite in anoxic marine sediments.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1987-03-01. It has received 499 citations till now. The article focuses on the topics: Greigite & Magnetite.read more
Citations
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Journal ArticleDOI
A review of the source, behaviour and distribution of arsenic in natural waters
TL;DR: The scale of the problem in terms of population exposed to high As concentrations is greatest in the Bengal Basin with more than 40 million people drinking water containing ‘excessive’ As as mentioned in this paper.
Journal ArticleDOI
Reactive iron in marine sediments
TL;DR: It appears that distinct microenvironments may exist in marine sediments, where, in one microenvironment, sulfide reacts with Fe oxides locally precipitating Fe sulfide minerals, and in another, Fe reduced and solubilized by microorganisms migrates freely into solution.
Journal ArticleDOI
Development of a sequential extraction procedure for iron: implications for iron partitioning in continentally derived particulates
TL;DR: In this paper, the development of a sequential extraction procedure for iron in modern and ancient sediments is presented, which recognizes seven operationally derived iron pools: (1) carbonate associated Fe (Fe carb ), including siderite and ankerite; (2) easily reducible oxides (Fe ox1 ), including ferrihydrite and lepidocrocite; and (3) reducible Oxides(Fe ox2 ), including goethite, hematite and akaganeite, (4) magnetite (Fe mag ); (5)
Book ChapterDOI
Bacterial Manganese and Iron Reduction in Aquatic Sediments
TL;DR: The importance of bacteria in the biogeochemical manganese and iron cycles has gained broad appreciation over the past decade, and a large number of bacteria have been isolated that grow with oxidized Mn or Fe as sole terminal electron acceptor.
References
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Journal ArticleDOI
Spectrophotometric determination of hydrogen sulfide in natural waters1
TL;DR: Winkler and Carpenter as mentioned in this paper proposed a modification of the Winkler method for the detection of dissolved oxygen in seawater, which has been shown to be more accurate than the original method.
Journal ArticleDOI
DITHIONITE- AND OXALATE-EXTRACTABLE Fe AND Al AS AIDS IN DIFFERENTIATING VARIOUS CLASSES OF SOILS
J. A. McKeague,J. H. Day +1 more
TL;DR: In this paper, acid ammonium oxalate extracts and in dithionite-citrate-bicarbonate extracts of a wide range of Canadian soils, several oxide and silicate minerals, and some amorphous preparations of iron or aluminum and silica.
Journal ArticleDOI
The Sulfur Cycle
TL;DR: The authors' model of the sulfur cycle can draw some conclusions that man is now contributing about one half as much as nature to the total atmospheric burden of sulfur compounds, but by A.D. 2000 he will be contributing about as much, and in the Northern Hemisphere alone he is more than matching nature.
Journal ArticleDOI
A comparison of methods for the quantification of bacterial sulfate reduction in coastal marine sediments
TL;DR: A radiotracer technique for measuring in situ rates of sulfate reduction in marine sediments is described in this paper, where microliter portions of labeled sulfate solution are injected into undisturbed sediment cores, and the amount of labeled sulfide produced is analyzed.
Journal ArticleDOI
Sedimentary iron monosulfides: Kinetics and mechanism of formation
Albert J Pyzik,Sheldon E. Sommer +1 more
TL;DR: In this article, the reaction between hydrous iron oxides and aqueous sulfide species was studied at estuarine conditions of pH, total sulfide, and ionic strength to determine the kinetics and formation mechanism of the initial iron sulfide.