Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Praça do Oceanográfico, 191, Cidade Universitária, São Paulo 05508-120, Brazil.
Instituto de Geociências da Universidade Federal da Bahia (IGEO-UFBA), Bahia 40170-020, Brazil.
Mar Pollut Bull. 2020 Jul;156:111219. doi: 10.1016/j.marpolbul.2020.111219. Epub 2020 May 3.
Large amounts of crude oil were found along Brazil's northeast and southeast seaboard from August 2019 to January 2020. Petroleum companies and oil tankers reported no accidents previously or during this period. The stranded oil on Brazilian beaches looks like tar; it has solid aspect and is denser than seawater. Chemical characterization of this oil showed that light hydrocarbons were still present, increasing the probability of negative effects to coastal organisms and ecosystems upon release in the water column. Diagnostic ratios, chromatogram pattern, and percentage-weathering plots proved that the oil samples share the same oil source. This work provides data for future comparison with oil samples that will likely be found stranded along the Brazilian shoreline in the years to come, helping to understand long term issues associated with the mysterious oil spill that made landfall in late 2019.
2019 年 8 月至 2020 年 1 月期间，在巴西东北和东南沿海岸线上发现了大量原油。石油公司和油轮报告称在此之前或期间没有发生任何事故。巴西海滩上的搁浅石油看起来像焦油；它具有固体外观，密度大于海水。对这种石油的化学特性分析表明，仍然存在轻烃，这增加了在水柱中释放时对沿海生物和生态系统产生负面影响的可能性。诊断比、色谱图模式和风化率图表明，这些油样具有相同的油源。这项工作为未来与可能在未来几年内搁浅在巴西海岸线的油样进行比较提供了数据，有助于了解与 2019 年底登陆的神秘溢油事件相关的长期问题。
