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Chemical Modeling of Acid WatersArsenic Research Our project investigates the occurrence, distribution, mobility, and fate of arsenic in geothermal systems, mine sites, and surface and ground waters to improve our understanding of processes affecting arsenic in the environment. Our investigations include the evaluation and application of hydride-generation atomic spectroscopy for As(III/V) determinations in acid, metal-rich waters and the stability of As redox states in the presence of inorganic and microbial redox-active agents. The USGS arsenic website is maintained by our project and an extensive bibliography on arsenic for the website is in preparation. McCleskey, R.B., Nordstrom, D.K., and Maest, A.S., 2004, Preservation of water samples for arsenic(III/V) determinations--An evaluation of the literature and new analytical results: Applied Geochemistry, v. 19, no. 7, p. 995-1009. (on-line abstract) Webster, J.G., and Nordstrom, D.K., 2003, Geothermal Arsenic, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in Ground Water: Geochemistry and Occurrence: Boston, Kluwer Academic Publishers, p. 101-126. Nordstrom, D.K., 2002, Worldwide occurrences of arsenic in ground water: Science, v. 296, no. 5576, p. 2143-2145. Nordstrom, D.K. and Archer, D.G., 2002, Arsenic Thermodynamic Data and Environmental Geochemistry, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in Ground Water: Geochemistry and Occurrence: Boston, Kluwer Academic Publishers, p. 1-26. Nordstrom, D.K., 2000, An overview of arsenic mass-poisoning in Bangladesh and West Bengal, India, in Young, C., ed., Minor elements 2000, processing and environmental aspects of As, Sb, Se, Te, and Bi: Society for Mining, Metallurgy, and Exploration, p. 21-30. (on-line abstract) Nordstrom, D.K., 2000, Thermodynamic properties of environmental arsenic species: Limitations and needs, in Young, C., ed., Minor elements 2000, processing and environmental aspects of As, Sb, Se, Te, and Bi: Society for Mining, Metallurgy, and Exploration, p. 325-331 |
