ABSTRACT
Arsenic mobilization from soils and sediments is a global environmental and human health problem. For example, drinking water sourced from tube wells in Bangladesh and India is often contaminated with dangerous concentrations of naturally mobilized arsenic (Yu et al. 2003) and mobilization of arsenic from freshwater surface sediments due to seasonal and/or eutrophicationinduced anoxia can contribute to elevated arsenic concentrations in the overlying water (Sohrin et al. 1997). Understanding arsenic mobilization in sediments is, therefore, integral to the mitigation of this global problem.
