From the 1988 Drought to the 1993 Flood: Transport of Halogenated Organic Compounds with the Mississippi River Suspended Sediment at Thebes, Illinois

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• 作者：Colleen E. Rostad
• 刊名：Environmental Science & Technology
• 出版年：1997
• 出版时间：May 1997
• 年：1997
• 卷：31
• 期：5
• 页码：1308 - 1312
• 全文大小：197K
• 年卷期：v.31,no.5(May 1997)
• ISSN：1520-5851

文摘

Suspended sediment was isolated from water samplescollected from the Mississippi River at Thebes, IL, eighttimesover a 5-year period from May 1988 through September1993 in order to evaluate the transport of lipophilichalogenatedorganic compounds associated with the suspended sediment. Two hydrologic extremes were included-the 1988drought and the 1993 flood. Halogenated organiccompounds included polychlorinated biphenyls (PCBs),hexachlorobenzene, pentachloroanisole, DCPA (dacthal),trifluralin, aldrin, dieldrin, and chlordane components.Sediment transport of most of these organic compounds wassubstantially higher during the 1993 flood than at othersampling times. The extreme transports during thefloodwere due to unusually high concentrations of somecontaminants on the suspended sediment, low to averageconcentrations of suspended sediment being transported,and unusually high waterdischarges.