The Biodegradation of Dispersed Oil Does Not Induce Toxicity at Environmentally-Relevant Concentrations  

作　　者：Roger C. Prince Bryan M. Hedgpeth Aaron D. Redman Josh D. Butler 

机构地区：[1]ExxonMobil Biomedical Sciences, Inc., Annandale, NJ, USA

出　　处：《Open Journal of Marine Science》2019年第3期113-120,共8页海洋科学期刊（英文）

摘　　要：Applying dispersants to spilled crude oil results in an oil in water dispersion of microscopic oil droplets that soon dilutes to levels below 1 ppm oil. These levels are substantially below those known to induce acute toxicity in 96-hour tests. We show here that oil hydrocarbons are biodegraded very rapidly in such situations (50% loss in 4 days in this experiment), and that no increase in acute toxicity to mysids (Americamysis bahia) is seen during this biodegradation, or over the following 20 days as the oil is further degraded (78% loss of detectable hydrocarbons in this experiment).Applying dispersants to spilled crude oil results in an oil in water dispersion of microscopic oil droplets that soon dilutes to levels below 1 ppm oil. These levels are substantially below those known to induce acute toxicity in 96-hour tests. We show here that oil hydrocarbons are biodegraded very rapidly in such situations (50% loss in 4 days in this experiment), and that no increase in acute toxicity to mysids (Americamysis bahia) is seen during this biodegradation, or over the following 20 days as the oil is further degraded (78% loss of detectable hydrocarbons in this experiment).

关 键 词：OIL Spills DISPERSANTS Biodegradation Acute TOXICITY HOPANE Americamysis BAHIA 

分 类 号：R73[医药卫生—肿瘤]