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| Title | Chemical Analysis and Toxicity Testing of Spokane River Sediments Collected in October 2000 | |||
| Month-Year Published | July 2001 | |||
| Online Availability |
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| Short Description |
Sediment samples from seven sites in the Spokane River drainage and a reference sample from a nearby lake were subjected to chemical analysis and laboratory toxicity tests. The chemicals analyzed included zinc, cadmium, lead, and other metals; semivolatile organic compounds; PCBs; and pesticides (selected samples only). The toxicity tests included bioassays with Microtox (pore water), the midge Chironomus tentans, and the amphipod Hyalella azteca. (Also see abstract below) | |||
| Publication Number | 01-03-019 | |||
| Author(s) | Johnson, A. and D. Norton | |||
| Print Availability | ||||
| Number of pages | 30 pp. + app (188 total) | |||
| Keywords | chemical, creek, lake, lead, river, sediment, Spokane River, study, toxic, toxicity, water, zinc | |||
| Subject Waterbodies |
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| Abstract | Long Description |
Sediment samples from seven sites in the Spokane River drainage and a reference sample from a nearby lake were subjected to chemical analysis and laboratory toxicity tests. The chemicals analyzed included zinc, cadmium, lead, and other metals; semivolatile organic compounds; PCBs; and pesticides (selected samples only). The toxicity tests included bioassays with Microtox (pore water), the midge Chironomus tentans, and the amphipod Hyalella azteca. The chemical and biological data concurred in showing toxicity at two sites above Upriver Dam and at a site in lower Long Lake. Although the level of chemical contamination was low in Latah Creek, the sediments were highly toxic to Hyalella. The study did not find strong evidence for toxicity in sediments from the Little Spokane River or upper Long Lake. |
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