The response of Hyalella azteca to artificial sediments spiked with cadmium, zinc, and anthracene
Conference
·
OSTI ID:392362
- Wright State Univ., Dayton, OH (United States)
Two artificial sediment recipes with differing organic content have been found that give > 80%. control survival with Hyalella azteca in standard toxicity assays. To further explore the usefulness of these sediments, both were spiked with cadmium, zinc, and anthracene. Toxicity assays (96 hr.) were run at intervals up to 4 weeks post-spike. Consistent LC50 results were obtained for both sediments and both metals. Responses with the PAH were similar to the metals, but each test was placed under UV light to assess photo-induced toxicity. GC analysis on porewater indicates that anthracene either binds tightly to the sediment or is absorbed directly by Hyalella azteca. Toxicity decreased over time, perhaps due to this binding. Both sediments appear to be adequate as routine control sediments.
- OSTI ID:
- 392362
- Report Number(s):
- CONF-9511137--; ISBN 1-880611-03-1
- Country of Publication:
- United States
- Language:
- English
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