Influence of dispersant application on the toxicity to sea urchin embryos of crude and bunker oils representative of prospective oil spill threats in Arctic and Sub-Arctic seas

MARINE POLLUTION BULLETIN

卷:172

Article

DeMiguel-Jimenez, Laura^1,3  Etxebarria, Nestor^2,3  Lekube, Xabier^1,3  Izagirre, Urtzi^1,3  Marigomez, Ionan^1,3 

[1] Univ Basque Country, UPV EHU, Fac Sci & Technol, Dept Zool & Anim Cell Biol,BCTA Res Grp, Sarriena Z-G, E-48940 Leioa, Basque Country, Spain

[2] Univ Basque Country, UPV EHU, Fac Sci & Technol, IBeA Res Grp,Dept Analyt Chem, Sarriena Z-G, E-48940 Leioa, Basque Country, Spain

[3] Univ Basque Country, UPV EHU, Res Ctr Expt Marine Biol & Biotechnol PiE, BCTA Res Grp, Areatza Z-G, Plentzia Bizkaia 48620, Basque Country, Spain

关键词: Oil;    Dispersant;    Iced seas;    Sea urchin embryo;    Toxicity;    Mixtures;   

DOI  :  10.1016/j.marpolbul.2021.112922

来源: Elsevier

【 摘 要 】

This study deals with the toxicity assessment of crude and bunker oils representative of prospective oil spill threats in Arctic and Sub-Arctic seas (NNA: Naphthenic North-Atlantic crude oil; MGO: Marine Gas Oil; IFO: Intermediate Fuel Oil 180), alone or in combination with a third-generation dispersant (Finasol OSR52 (R)). Early life stages of sea urchin, Paracentrotus lividus, were selected for toxicity testing of oil low-energy water accommodated fractions. A multi-index approach, including larval size increase and malformation, and developmental disruption as endpoints, was sensitive to discriminate from slight to severe toxicity caused by the tested aqueous fractions. IFO (heavy bunker oil) was more toxic than NNA (light crude oil), with MGO (light bunker oil) in between. The dispersant was toxic and further on it enhanced oil toxicity. Toxic units revealed that identified PAHs were not the main cause for toxicity, most likely exerted by individual or combined toxic action of nonmeasured compounds.

【 授权许可】

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