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The influence of groundwater chemistry on arsenic concentrations and speciation in a quartz sand and gravel aquifer

Dates

Year
2004

Citation

Kent, Douglas B, and Fox, Patricia M, 2004, The influence of groundwater chemistry on arsenic concentrations and speciation in a quartz sand and gravel aquifer: Geochemical Transactions, v. 5, iss. 1, p. 1-12.

Summary

We examined the chemical reactions influencing dissolved concentrations, speciation, and transport of naturally occurring arsenic (As) in a shallow, sand and gravel aquifer with distinct geochemical zones resulting from land disposal of dilute sewage effluent. The principal geochemical zones were: (1) the uncontaminated zone above the sewage plume [350 µM dissolved oxygen (DO), pH 5.9]; (2) the suboxic zone (5 µM DO, pH 6.2, elevated concentrations of sewage-derived phosphate and nitrate); and (3) the anoxic zone [dissolved iron(II) 100–300 µM, pH 6.5–6.9, elevated concentrations of sewage-derived phosphate]. Sediments are comprised of greater than 90% quartz but the surfaces of quartz and other mineral grains are coated with nanometer-size [...]

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Communities

  • USGS National Research Program

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Provenance

Added to ScienceBase on Fri Apr 19 12:07:05 MDT 2013 by processing file <b>Partitioning of Solutes between Solid and Aqueous Phases.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/511182cfe4b03611765639eb">https://www.sciencebase.gov/catalog/item/511182cfe4b03611765639eb</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1063/1.1738211

Citation Extension

journalGeochemical Transactions
parts
typePages
value1-12
typeVolume
value5
typeIssue
value1
citationTypeJournal Article

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