Characterization of toxic conditions above Wilson's Creek National Battlefield Park, Missouri
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Abstract
ABSTRACT: Wilson's Creek has an extensive history of toxicity from both point and nonpoint sources. Seven-day chronic daphnid (Ceriodaphnia dubia) bioassays identified one toxic site in the Wilson's Creek watershed. Procedures for the characterization phase of a Toxicity Identification Evaluation (TIE) were modified for chronic assessment and performed on four water samples from the toxic site. The characterization involved chemical/physical alterations of samples, combined with bioassays, to help in identification of the class(es) of toxicants; followed by chemical analyses. To help understand the additivity of mixtures, toxic units were derived. Successive samples contained concentrations of copper, cadmium, nickel and zinc that literature values describe as being chronically toxic to daphnids. Summed chronic toxic units for these values greatly exceeded ambient toxic units, and more than accounted for observed toxicity.
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Characterization of toxic conditions above Wilson's Creek National Battlefield Park, Missouri |
Series title | Journal of the American Water Resources Association |
DOI | 10.1111/j.1752-1688.1998.tb04156.x |
Volume | 34 |
Issue | 5 |
Year Published | 1998 |
Language | English |
Publisher | American Water Resources Association |
Description | 12 p. |
First page | 1087 |
Last page | 1098 |
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