Passive-sampler-derived PCB and OCP concentrations in the waters of the world-first results from the AQUA-GAPS/MONET Network

Lohmann, Rainer, Vrana, Branislav, Muir, Derek, Smedes, Foppe, Sobotka, Jaromír, Zeng, Eddy Y., Bao, Lian Jun, Allan, Ian J., Astrahan, Peleg, Barra, Ricardo O., Bidleman, Terry, Dykyi, Evgen, Estoppey, Nicolas, Fillmann, Gilberto, Greenwood, Naomi, Helm, Paul A., Jantunen, Liisa, Kaserzon, Sarit, Macías, J. Vinicio, Maruya, Keith A., Molina, Francisco, Newman, Brent, Prats, Raimon M., Tsapakis, Manolis, Tysklind, Mats, van Drooge, Barend L., Veal, Cameron J. and Wong, Charles S. (2023) Passive-sampler-derived PCB and OCP concentrations in the waters of the world-first results from the AQUA-GAPS/MONET Network. Environmental Science and Technology, 57 (25). pp. 9342-9352. ISSN 0013-936X

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Abstract

Persistent organic pollutants (POPs) are recognized as pollutants of global concern, but so far, information on the trends of legacy POPs in the waters of the world has been missing due to logistical, analytical, and financial reasons. Passive samplers have emerged as an attractive alternative to active water sampling methods as they accumulate POPs, represent time-weighted average concentrations, and can easily be shipped and deployed. As part of the AQUA-GAPS/MONET, passive samplers were deployed at 40 globally distributed sites between 2016 and 2020, for a total of 21 freshwater and 40 marine deployments. Results from silicone passive samplers showed α-hexachlorocyclohexane (HCH) and γ-HCH displaying the greatest concentrations in the northern latitudes/Arctic Ocean, in stark contrast to the more persistent penta (PeCB)- and hexachlorobenzene (HCB), which approached equilibrium across sampling sites. Geospatial patterns of polychlorinated biphenyl (PCB) aqueous concentrations closely matched original estimates of production and use, implying limited global transport. Positive correlations between log-transformed concentrations of Σ7PCB, ΣDDTs, Σendosulfan, and Σchlordane, but not ΣHCH, and the log of population density (p < 0.05) within 5 and 10 km of the sampling sites also supported limited transport from used sites. These results help to understand the extent of global distribution, and eventually time-trends, of organic pollutants in aquatic systems, such as across freshwaters and oceans. Future deployments will aim to establish time-trends at selected sites while adding to the geographical coverage.

Item Type:	Article
Additional Information:	Funding Information: Authors thank the RECETOX Research Infrastructure (no. LM2018121) financed by the Ministry of Education, Youth and Sports, and the Operational Programme Research, Development and Education (the CETOCOEN Excellence project no. CZ.02.1.01/0.0/0.0/17_043/0009632) for supportive background. This work was supported by the European Union’s Horizon 2020 research and innovation program under grant agreement no. 857560. This publication reflects only the author’s view, and the European Commission is not responsible for any use that may be made of the information it contains. The results of the project were created with the financial support of the provider Czech Science Foundation within the project ’Holistic exposure and effect potential assessment of complex chemical mixtures in the aquatic environment’ no. 20-04676X. G. Publisher Copyright: © 2023 American Chemical Society
Uncontrolled Keywords:	cyclodiene pesticides,global fractionation,hexachlorobenzene,hexachlorocyclohexanes,long-range transport,organochlorine pesticides,passive sampler,polychlorinated biphenyls,silicone rubber,chemistry(all),environmental chemistry,sdg 14 - life below water ,/dk/atira/pure/subjectarea/asjc/1600
Faculty \ School:	Faculty of Science > School of Environmental Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Collaborative Centre for Sustainable Use of the Seas
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	26 Sep 2023 12:30
Last Modified:	26 Sep 2023 12:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/93107
DOI:	10.1021/acs.est.3c01866

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