Distribution of Selected Halogenated Organic Compounds Among Suspended Particulate, Colloid, and Aqueous Phases in the Mississippi River and Major Tributaries
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- Rostad, C.E. & Daniel, S.R. Arch Environ Contam Toxicol (2007) 53: 151. doi:10.1007/s00244-005-0056-1
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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.