Archives of Environmental Contamination and Toxicology 2007-08-01

Distribution of selected halogenated organic compounds among suspended particulate, colloid, and aqueous phases in the Mississippi river and major tributaries.

C E Rostad, S R Daniel

Index: Arch. Environ. Contam. Toxicol. 53(2) , 151-8, (2007)

Full Text: HTML

Abstract

Suspended particulate, colloid, and aqueous phases were separated and analyzed to determine spatial variation of specific organic compound transport associated with each phase in a dynamic river system. Sixteen sites along the Mississippi River and its major tributaries were sampled at low-flow conditions to maximize the possibility of equilibrium. Across the solubility range studied, the proportion transported by each phase depended on the compound solubility, with more water-soluble compounds (dacthal, trifluralin) transported predominantly in the aqueous phase and less-water soluble compounds (polychlorinated biphenyls, chlordane-related compounds) transported predominantly in the particulate and colloid phases.