HYDROCARBON AND ECOTOXICITY IN SEAWATER AND SEDIMENT SAMPLES OF GUANABARA BAY AFTER THE OIL SPILL IN JANUARY 2000
| Autor: | Neusa A. A. Vital, Renato S. Carreira, Irene Terezinha Gabardo, Leticia Veiga Falcão, Rosana Cardoso Lopez Pereira, Maria de Fátima Guadalupe Meniconi |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | International Oil Spill Conference Proceedings. 2001:941-950 |
| ISSN: | 2169-3358 2169-3366 |
| Popis: | On January 18, 2000, approximately 340,000 gallons (1,300 m3) of marine fuel (MF-380) spilled into Guanabara Bay, Rio de Janeiro, Brazil. The spill originated from a leak in the pipeline from the PETROBRAS refinery to the oil terminal. This paper presents the results for the water column and sediment monitoring 10 days after the spill, including n-alkanes, unresolved complex mixture (UCM), polycyclic aromatic hydrocarbons (PAHs), and toxicological essays. Chemical and toxicological monitoring of the water column was performed at 14 sampling stations throughout the impacted area in Guanabara Bay. The chemical analysis of PAHs by ultraviolet fluorescence showed results from To monitor sediments, 57 samples were collected from intertidal and sub tidal sites. For the 30 intertidal sediments, 73% contained PAHs (GC-MS) below 2 μg/g−1, 20% were in the range 2–5 μg/g−1, and only two stations (7%), located in the vicinity of the spill point, contained levels up to 20 μg/g−1. For the 27 subtidal sediments, results were in the range of 0.2–9.6 μg/g−1 for PAHs, 0.7–43.3 μg/g−1 for n-alkanes, and 17.8–1,250 μg/g−1 for UCM. The toxicological study for the sediments based on Vibrio fisheri (Microtox) indicated no acute toxicity effects. When comparing the post-spill results with previous hydrocarbon data, no significant impact was observed in sediments and water column because of the oil spill. There is, however, a significant background of chronic anthropogenic inputs to Guanabara Bay. |
| Databáze: | OpenAIRE |
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