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Article: Complexation and release isotherm of arsenic in arsenic-humic/fulvic equilibrium study.
- Article from:
- Australian Journal of Soil Research
- Article date:
- December 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 CSIRO Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Introduction
Arsenic is a widely occurring toxic metalloid in natural ecosystems. Arsenic input to the environment, either through natural processes of weathering of arsenic-bearing rocks and/or use of arsenic-contaminated groundwater for irrigation, or through a host of anthropogenic activities (such as mining operations, smelting of base metal ores, combustion of coal, and application of arsenicals as agricultural pesticides), is well documented (Welch et al. 1988; Sanyal 1999; Sanyal and Nasar 2002). There has been rapidly growing global concern about arsenic contamination in drinking water (WHO 2001). Arsenic contamination of groundwater in the Gangetic ...