NORCE Norwegian Research Centre, Mekjarvik 12, 4072, Randaberg, Norway.
NORCE Norwegian Research Centre, Mekjarvik 12, 4072, Randaberg, Norway.
Mar Environ Res. 2021 Jun;168:105314. doi: 10.1016/j.marenvres.2021.105314. Epub 2021 Mar 28.
In situ burning (ISB) is an oil spill clean-up option used by oil spill responders to mitigate impacts on the marine environment. Despite advantages such as high efficiency and potential applicability for challenging areas such as the Arctic, the actual environmental side effects are still uncertain. Acute and sublethal effects of the water accommodated fractions (WAFs from 25 g oil/L seawater) of a pre-weathered North Sea crude (Oseberg Blend 200 °C+) and field generated ISB residue were evaluated on Northern shrimp (Pandalus borealis) larvae. The larvae were first exposed for 96 h to a serial dilution of seven concentrations, and then maintained for two weeks in clean seawater post-exposure. No acute (mortality) or sublethal effects (feeding, development, or growth) were detected in any of the ISB residue concentrations. Significant larvae mortality was found in the three highest concentrations of crude oil (96-h LC50:469 μg/L total petroleum hydrocarbon) but no sublethal effects were found in the surviving larvae post-exposure. This study indicates that applying ISB could mitigate acute impacts of spilled oil on shrimp larvae.
原位燃烧（ISB）是一种油污清理方法，被油污应急响应人员用于减轻对海洋环境的影响。尽管原位燃烧具有高效率的优点，并且可能适用于北极等具有挑战性的地区，但实际的环境副作用仍不确定。本研究评价了经过预先风化的北海原油（Oseberg Blend 200°C+）和现场生成的 ISB 残渣的水可容纳分数（WAFs，25g 油/L 海水）对北方虾（Pandalus borealis）幼体的急性和亚致死效应。幼体首先暴露于七个浓度的连续稀释液中 96 小时，然后在暴露后两周内用清洁海水维持。在任何 ISB 残渣浓度下，均未检测到急性（死亡率）或亚致死效应（摄食、发育或生长）。在三种最高浓度的原油（96 小时 LC50：469μg/L 总石油烃）中发现了显著的幼体死亡率，但在暴露后幸存的幼体中未发现亚致死效应。这项研究表明，应用 ISB 可以减轻溢油对虾幼体的急性影响。
