PMID- 33957587 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20210608 LR - 20210608 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 785 DP - 2021 Sep 1 TI - Low levels of PAHs and organotin compounds in surface sediment samples from a broad marine area of 25 de Mayo (King George) Island, South Shetland Islands. PG - 147206 LID - S0048-9697(21)02277-4 [pii] LID - 10.1016/j.scitotenv.2021.147206 [doi] AB - The Northern region of the Antarctic Peninsula constitutes the area with the highest human presence in West Antarctica. The human presence, with all the activities associated such as logistic, scientific and tourism operations, represents a potential risk of chemical pollution with both, organic and inorganic contaminants. Under these conditions knowledge about the presence and levels of the main persistent organic pollutants (POPs) is essential to evaluate the environmental status of this ecologically relevant and sensitive area. In this work, which complements our previous study regarding trace elements, we performed the first regional-scale monitoring of 24 PAHs (16 of them included in EPA list of primary pollutant), and organotin compounds (OTCs:TBT, DBT and MBT) in surface sediment from 68 sites comprising six different areas in Maxwell Bay, southeast coast of 25 de Mayo (King George) Island. POPs were quantified in surface sediment samples (20-30 m depth) obtained during two summer Antarctic expeditions by gas chromatography-mass spectrometry (GC-MS). The two most anthropized areas (South Fildes and Potter Cove) showed moderated evidence of pollution for PAHs and OTC. In some sampling sites the concentration of total PAHs was higher than 100 ng/g dw, while TBT was detected in only five samples, two of them located in Potter Cove (ranged between 14 and 18 ng/g dw), and three, located in South Fildes area (ranged between 118 and 416 ng/g dw). Although POPs contamination was evidenced in some samples close to scientific stations, a pollution pattern was not clearly identified. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Vodopivez, C AU - Vodopivez C AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina. FAU - Curtosi, A AU - Curtosi A AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina. FAU - Pelletier, E AU - Pelletier E AD - Institut des Sciences de la Mer de Rimouski (ISMER), Universite du Quebec a Rimouski, 310 Allee des Ursulines, Rimouski G5L 3A1, Canada. FAU - Saint-Louis, R AU - Saint-Louis R AD - Departement de biologie, chimie et geographie, Universite du Quebec a Rimouski, 300 Allee des Ursulines, Rimouski G5L 3A1, Canada. FAU - Spairani, L U AU - Spairani LU AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina. FAU - Hernandez, E A AU - Hernandez EA AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquimica, Instituto NANOBIOTEC UBA-CONICET, Junin 956 6to piso, CABA, Argentina. FAU - Zakrajsek, A AU - Zakrajsek A AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina. FAU - Genez, A AU - Genez A AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina. FAU - Mac Cormack, W P AU - Mac Cormack WP AD - Instituto Antartico Argentino, 25 de Mayo 1143, San Martin B1650HMK, Provincia de Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquimica, Instituto NANOBIOTEC UBA-CONICET, Junin 956 6to piso, CABA, Argentina.. Electronic address: wmac@ffyb.uba.ar. LA - eng PT - Journal Article DEP - 20210420 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 SB - IM OTO - NOTNLM OT - Antarctica OT - Maxwell Bay sediments OT - PAHs OT - POPs OT - organotin compounds COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/05/07 06:00 MHDA- 2021/05/07 06:01 CRDT- 2021/05/06 20:46 PHST- 2019/12/28 00:00 [received] PHST- 2021/04/13 00:00 [revised] PHST- 2021/04/13 00:00 [accepted] PHST- 2021/05/07 06:00 [pubmed] PHST- 2021/05/07 06:01 [medline] PHST- 2021/05/06 20:46 [entrez] AID - S0048-9697(21)02277-4 [pii] AID - 10.1016/j.scitotenv.2021.147206 [doi] PST - ppublish SO - Sci Total Environ. 2021 Sep 1;785:147206. doi: 10.1016/j.scitotenv.2021.147206. Epub 2021 Apr 20.