General research interests: Metal(loid) Speciation & Geochemistry
- development of analytical methods for the speciation of trace elements in natural and industrial environments
- study of cycling and fate of trace element species in impacted ecosystems
- behavior of trace element species during industrial water and waste treatment procedures
Specific current and recent research projects
- interaction of arsenic and selenium species with reduced sulfur compounds
- selenium cycling and speciation in marine and estuarine waters
- arsenic biogeochemistry in meromictic Mono Lake, California
- selenium bioaccumulation in wetland food chains
- selenium cycling in power plant fly ash ponds
- development of a method for the speciation of cyanide at environmental concentration levels
- chromium speciation in waters and soils/sediments
- determination of halogen oxyanions in drinking water disinfection systems
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