Toxicity of oiled sediments treated with bioremediation agents: A shoreline experiment in Delaware, USA
- National Oceanic and Atmospheric Administration, Seattle, WA (United States)
- Environment Canada, Dartmouth, Nova Scotia (Canada)
- Environmental Protection Agency, Gulf Breeze, FL (United States)
- Department of Fisheries and Oceans, Mont-Joli, Quebec (Canada)
- SAIC, Inc., Narragansett, RI (United States)
Using a randomized complete block design, a battery of five pore water and sediment bioassays were used to monitor and compare toxicity among un-oiled, oiled (light Nigerian crude) and nutrient and bacteria-treated shoreline plots on a sandy beach. Tests included sea urchin fertilization, water and modified-solid phase microtox, 10-day amphipod survival and grass shrimp embryo bioassays. During the 13-week study, bioremediation treatment with nutrients and/or bacteria did not decrease toxicity relative to that in untreated plots. Results from at least one bioassay suggested that, relative to no treatment, treatment may have increased toxicity for several weeks. The least and most sensitive tests were sea urchin fertilization (pore water) and 10-day amphipod test, respectively. Coupled with chemical monitoring, the study produced a large data-base for evaluating toxic concentrations of petroleum hydrocarbons in sandy sediments.
- OSTI ID:
- 191310
- Report Number(s):
- CONF-9511137-; ISBN 1-880611-03-1; TRN: IM9610%%311
- Resource Relation:
- Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
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