Journal ArticleDOI
Characterization of redox conditions in groundwater contaminant plumes
Thomas Højlund Christensen,Poul Løgstrup Bjerg,Steven A. Banwart,Rasmus Jakobsen,Gorm Heron,Hans-Jørgen Albrechtsen +5 more
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TLDR
A review of the principles behind the different approaches, summarizes methods used and evaluates the approaches based on the experience from the reported applications can be found in this paper, with a few exceptions, direct electrochemical measurement and rigorous interpretation of redox potentials dubious, if not erroneous.About:
This article is published in Journal of Contaminant Hydrology.The article was published on 2000-10-01. It has received 480 citations till now. The article focuses on the topics: Groundwater pollution & Environmental remediation.read more
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Journal ArticleDOI
Nitrate attenuation in groundwater: a review of biogeochemical controlling processes.
Michael O. Rivett,S. R. Buss,Philip Morgan,Jonathan W. N. Smith,Jonathan W. N. Smith,Chrystina D. Bemment +5 more
TL;DR: Biogeochemical processes controlling nitrate attenuation in aquifers are critically reviewed and denitrifying bacteria are essentially ubiquitous in the subsurface, the critical limiting factors are oxygen and electron donor concentration and availability and variability in other environmental conditions appears to be less important.
Journal ArticleDOI
Nutrient inputs to the coastal ocean through submarine groundwater discharge: controls and potential impact
TL;DR: In this article, the authors reviewed the key factors determining the fluxes of nitrogen (N) and phosphorus (P) associated with submarine groundwater discharge and presented a compilation of measured rates, in particular, the water residence time and the redox conditions in coastal aquifers and sediments determine fluxes and ratios of N and P in SGD.
Journal ArticleDOI
Multicomponent reactive transport modeling in variably saturated porous media using a generalized formulation for kinetically controlled reactions
TL;DR: A generalized formulation for kinetically controlled reactions has been developed and incorporated into a multicomponent reactive transport model to facilitate the investigation of a large variety of problems involving inorganic and organic chemicals in variably saturated media as mentioned in this paper.
Journal ArticleDOI
Redox Processes and Water Quality of Selected Principal Aquifer Systems
Peter B. McMahon,F. H. Chapelle +1 more
TL;DR: In this article, the reduction/oxidation (redox) conditions in 15 principal aquifer (PA) systems of the United States, and their impact on several water quality issues, were assessed from a large data base collected by the National Water-Quality Assessment Program of the USGS.
Redox Processes and Water Quality of Selected Principal Aquifer Systems
Peter B. McMahon,F. H. Chapelle +1 more
TL;DR: It is found that samples indicating mixed redox processes provide information on redox heterogeneity that is useful for assessing common water quality issues and should be included in routine water quality monitoring programs whenever possible.
References
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Journal ArticleDOI
Ferrozine---a new spectrophotometric reagent for iron
TL;DR: The ferroin group has been known to react as bidentate ligands with certain metal ions such as ferrous, cuprous, and cobaltous, to give colored complex species.
Book
Aqueous Environmental Geochemistry
TL;DR: The Geochemistry of Clay Minerals: Actinides and Their Daughter and Fission Products as mentioned in this paper, a book about the geochemistry of clay minerals, is a good starting point for this discussion.
Journal ArticleDOI
Determination of the sedimentary microbial biomass by extractible lipid phosphate.
TL;DR: The high content of plasmalogen phospholipids in these sediments suggests that the anaerobic prokaryotic Clostridia are found in the aerobic sedimentary horizon, which would require anaer aerobic microhabitats in the aerated zones.
Biology of anaerobic microorganisms
TL;DR: The Principles and Limits of Anaerobic Degradation: Environmental and Technological Aspects (B. Vogels, et al.) are published.
Journal ArticleDOI
The use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales
Donald E. Canfield,Robert Raiswell,Joseph T. Westrich,Christopher M. Reaves,Robert A. Berner +4 more
TL;DR: In this article, a chromium reduction method was used for the determination of reduced inorganic sulfur compounds (pyrite + elemental sulfur + acid volatile monosulfides) in modern sediments and shales.
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User's guide to PHREEQC (Version 2)-a computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations
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