Comparison of Diluted Bitumen (Dilbit) and Conventional Crude Oil Toxicity to Developing Zebrafish
作者： Danielle A. Philibert , Clara P. Philibert , Carlie Lewis , Keith B. Tierney
关键词: Ethylbenzene 、 Environmental chemistry 、 BTEX 、 Asphalt 、 Natural-gas condensate 、 Xylene 、 Hydrocarbon 、 Polycyclic aromatic hydrocarbon 、 Dilbit 、 Waste management 、 Chemistry
摘要: To facilitate pipeline transport of bitumen, it is diluted with natural gas condensate, and the resulting mixture, “dilbit”, differs greatly in chemical composition to conventional crude oil. Despite risk accidental dilbit release, effects on aquatic animals are largely unknown. In this study, we compared toxicity water accommodated fractions (WAFs) two oils, medium sour composite mixed sweet blend, developing zebrafish. Mortality pericardial edema was lowest WAF-exposed embryonic zebrafish but yolk sac similar all exposures. Shelter-seeking behavior decreased by WAF exposures, continuous swimming affected tested Regardless type, monoaromatic hydrocarbon content (largely made up benzene, toluene, ethylbenzene, xylene (BTEX)) a more accurate predictor lethality than polycyclic aromatic (...
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