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dc.contributor.authorHansen, Bjørn Henrik
dc.contributor.authorNordtug, Trond
dc.contributor.authorØverjordet, Ida Beathe
dc.contributor.authorAltin, Dag
dc.contributor.authorFarkas, Julia
dc.contributor.authorDaling, Per Snorre
dc.contributor.authorSørheim, Kristin Rist
dc.contributor.authorFaksness, Liv Guri
dc.date.accessioned2022-08-05T12:40:28Z
dc.date.available2022-08-05T12:40:28Z
dc.date.created2022-02-14T11:10:35Z
dc.date.issued2022
dc.identifier.citationScience of the Total Environment. 2022, 823 1-9.en_US
dc.identifier.issn0048-9697
dc.identifier.urihttps://hdl.handle.net/11250/3010379
dc.description.abstractChemical herders may be used to sequester and thicken surface oil slicks to increase the time window for performing in situ burning of spilled oil on the sea surface. For herder use to be an environmentally safe oil spill response option, information regarding their potential ecotoxicity both alone and in combination with oil is needed. This study aimed at assessing if using herders can cause toxicity to cold-water marine organisms. Our objective was to test the two chemical herders Siltech OP-40 (OP-40) and ThickSlick-6535 (TS-6535) with and without oil for toxicity using sensitive life stages of cold-water marine copepod (Calanus finmarchicus) and fish (Gadus morhua). For herders alone, OP-40 was consistently more toxic than TS-6535. To test herders in combination with oil, low-energy water accommodated fractions (LE-WAFs, without vortex) with Alaskan North Slope crude oils were prepared with and without herders. Dissolution of oil components from surface oil was somewhat delayed following herder application, due to herder-induced reduction in contact area between water and oil. The LE-WAFs were also used for toxicity testing, and we observed no significant differences in toxicity thresholds between treatments to LE-WAFs generated with oil alone and oil treated with herders. The operational herder-to-oil ratio is very low (1:500), and the herders tested in the present work displayed acute toxicity at concentrations well above what would be expected following in situ application. Application of chemical herders to oil slicks is not expected to add significant effects to that of the oil for cold-water marine species exposed to herder-treated oil slicks.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectEcotoxicityen_US
dc.subjectOil spill responseen_US
dc.subjectPAH dissolutionen_US
dc.subjectChemical herderen_US
dc.titleApplication of chemical herders do not increase acute crude oil toxicity to cold-water marine speciesen_US
dc.title.alternativeApplication of chemical herders do not increase acute crude oil toxicity to cold-water marine speciesen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2022 The Authors. Published by Elsevier B.V.en_US
dc.source.pagenumber1-9en_US
dc.source.volume823en_US
dc.source.journalScience of the Total Environmenten_US
dc.identifier.doi10.1016/j.scitotenv.2022.153779
dc.identifier.cristin2001228
dc.source.articlenumber153779en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal