Trace elements and semi-volatile and organochlorine compounds were used as chemical indicators of contaminants in stream bed-sediment for the Core National indicator.
Stream bed sediment was sampled to assess those contaminants that are relatively insoluble and are adsorbed to fine-grained (silt and clay) material. Sediments are collected from slower moving parts of the stream where silt and clay are deposited.
Constituents sampled [Trace elements] [Organic compounds]
Standards and guidelines [Trace elements] [Organic compounds]
For additional information
of the Interior, U.S. Geological
Last update: Monday, May 13, 2002 08:56:49 AM
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