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dc.contributor.authorVudamala, K.
dc.contributor.authorChakraborty, P.
dc.contributor.authorPriyanka
dc.contributor.authorGummalla, A.
dc.contributor.authorQureshi, A.
dc.date.accessioned2025-01-16
dc.date.accessioned2025-01-21T10:49:48Z
dc.date.available2024-09-07
dc.date.available2025-01-21T10:49:48Z
dc.date.issued2024
dc.identifier.citationChemosphere,Vol. 364;2024;Article no:143241
dc.identifier.issn0045-6535
dc.identifier.otherhttps://www.sciencedirect.com/science/article/pii/S0045653524021398
dc.identifier.urihttps://doi.org/10.1016/j.chemosphere.2024.143241.
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9316
dc.descriptionIF2023= 8.1
dc.description.abstractPolychlorinated biphenyl compounds (PCBs) are industrial chemicals whose production was discontinued in the early nineties in most countries. Sill, PCBs are detectable in pristine and remote locations. Occurrence in regions such as Southern Oceans and Antarctica are influenced by the global, and regional, cycling. Here, we studied the surface and deep ocean distribution of indicator- and dioxin-like PCB congeners in the Southern Indian Ocean (SIO), and the coast of Antarctica (COA) during the tenth Indian Southern Ocean Expedition (SOE-10), December 2017 February 2018. ?21PCBs in SIO surface waters ranged from 3.8 to 167.1 pg L?1 (average standard deviation: 35.7 48.4 pg L?1), and in COA from 1.0 to 41.8 pg L?1 (13.8 12.7 pg L?1), respectively. A noticeable gradient was observed, with higher PCBs levels in northern latitudes than southern latitudes in the SIO, and higher levels in the eastern longitudes compared to western longitudes in the COA. Results suggest the influence of secondary sources, or re-emission, of PCBs in the Southern Oceans and Antarctica. Both regions showed notable PCB levels in surface and deep waters (up to 1000 m) due to ongoing surface sources and remineralization processes in deeper waters. Multimedia modeling with the global model (BETR-Global) suggests the SIO act as a net sink for PCBs in the ocean.
dc.languageen
dc.publisherElsevier
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titlePolychlorinated biphenyls in the surface and deep waters of the Southern Indian Ocean and Coastal Antarctica
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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