Distribution of Selected Halogenated Organic Compounds Among Suspended Particulate, Colloid, and Aqueous Phases in the Mississippi River and Major Tributaries



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.


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.United States Geological SurveyDenverUSA
  2. 2.Department of Chemistry and GeochemistryColorado School of MinesGoldenUSA

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