Occurrence and diffusive air-seawater exchanges of
organochlorine pesticides (OCPs) and polychlorinated biphenyls
(PCBs) in Fildes Bay, King George Island, Antarctica

J 2024

Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica

LUARTE, Thais; Andrea HIRMAS-OLIVARES; Juan HOFER; Ricardo GIESECKE; Mireia MESTRE et al.

Základní údaje

Originální název

Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica

Autoři

Vydání

Science of the Total Environment, AMSTERDAM, Elsevier, 2024, 0048-9697

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 8.000

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00136718

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Antarctica; POPs; Legacy; Snow amplification; Biodegradation; Human impacts

Štítky

143180, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 24. 2. 2025 09:58, Mgr. Michaela Hylsová, Ph.D.

Anotace

V originále

We report the levels of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in seawater and air, and the air-sea dynamics through diffusive exchange analysis in Fildes Bay, King George Island, Antarctica, between November 2019 and January 30, 2020. Hexachlorobenzene (HCB) was the most abundant compound in both air and seawater with concentrations around 39 +/- 2.1 pg m- 3 and 3.2 +/- 2.4 pg L-1 respectively. The most abundant PCB congener was PCB 11, with a mean of 3.16 +/- 3.7 pg m- 3 in air and 2.0 +/- 1.1 pg L-1 in seawater. The fugacity gradient estimated for the OCP compounds indicate a predominance of net atmospheric deposition for HCB, alpha-HCH, gamma-HCH, 4,4 '-DDT, 4,4 '-DDE and close to equilibrium for the PeCB compound. The observed deposition of some OCs may be driven by high biodegradation rates and/or settling fluxes decreasing the concentration of these compounds in surface waters, which is supported by the capacity of microbial consortium to degrade some of these compounds. The estimated fugacity gradients for PCBs showed differences between congeners, with net volatilization predominating for PCB -9, a trend close to equilibrium for PCB congeners 11, 28, 52, 101, 118, 138, and 153, and deposition for PCB 180. Snow amplification may play an important role for less hydrophobic PCBs, with volatilization predominating after snow/glacier melting. As hydrophobicity increases, the biological pump decreases the concentration of PCBs in seawater, reversing the fugacity gradient to atmospheric deposition. This study highlights the potential impacts of climate change, through glacier retreat, on the biogeochemistry of POPs, remobilizing those compounds previously trapped within the cryosphere which in turn will transform the Antarctic cryosphere into a secondary source of the more volatile POPs in coastal areas, influenced by snow and ice melting.

Návaznosti

EF17_043/0009632, projekt VaV

Název: CETOCOEN Excellence

857560, interní kód MU
(Kód CEP: EF17_043/0009632)

Název: CETOCOEN Excellence (Akronym: CETOCOEN Excellence)

Investor: Evropská unie, CETOCOEN Excellence, Spreading excellence and widening participation

90121, velká výzkumná infrastruktura

Název: RECETOX RI

90269, velká výzkumná infrastruktura

Název: RECETOX RI II

Citovat

LUARTE, Thais; Andrea HIRMAS-OLIVARES; Juan HOFER; Ricardo GIESECKE; Mireia MESTRE; Sergio GUAJARDO-LEIVA; Eduardo CASTRO-NALLAR; Andres PEREZ-PARADAL; Gustavo CHIANG; Rainer LOHMANN; Jordi DACHS; Susan Bengtson NASH; Jose PULGAR; Karla Andrea POZO; Petra PŘIBYLOVÁ; Jakub MARTINÍK a Cristobal GALBAN-MALAGON. Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica. Science of the Total Environment. AMSTERDAM: Elsevier, 2024, roč. 908, January 2024, s. 1-13. ISSN 0048-9697. Dostupné z: https://doi.org/10.1016/j.scitotenv.2023.168323.

@article{2421901,
   author = {Luarte, Thais and HirmasandOlivares, Andrea and Hofer, Juan and Giesecke, Ricardo and Mestre, Mireia and GuajardoandLeiva, Sergio and CastroandNallar, Eduardo and PerezandParadal, Andres and Chiang, Gustavo and Lohmann, Rainer and Dachs, Jordi and Nash, Susan Bengtson and Pulgar, Jose and Pozo, Karla Andrea and Přibylová, Petra and Martiník, Jakub and GalbanandMalagon, Cristobal},
   article_location = {AMSTERDAM},
   article_number = {January 2024},
   doi = {https://doi.org/10.1016/j.scitotenv.2023.168323},
   keywords = {Antarctica; POPs; Legacy; Snow amplification; Biodegradation; Human impacts},
   language = {eng},
   issn = {0048-9697},
   journal = {Science of the Total Environment},
   title = {Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica},
   url = {https://www.sciencedirect.com/science/article/pii/S0048969723069516?via%3Dihub},
   volume = {908},
   year = {2024}
}

TY  - JOUR
ID  - 2421901
AU  - Luarte, Thais - Hirmas-Olivares, Andrea - Hofer, Juan - Giesecke, Ricardo - Mestre, Mireia - Guajardo-Leiva, Sergio - Castro-Nallar, Eduardo - Perez-Paradal, Andres - Chiang, Gustavo - Lohmann, Rainer - Dachs, Jordi - Nash, Susan Bengtson - Pulgar, Jose - Pozo, Karla Andrea - Přibylová, Petra - Martiník, Jakub - Galban-Malagon, Cristobal
PY  - 2024
TI  - Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica
JF  - Science of the Total Environment
VL  - 908
IS  - January 2024
SP  - 1-13
EP  - 1-13
PB  - Elsevier
SN  - 00489697
KW  - Antarctica
KW  - POPs
KW  - Legacy
KW  - Snow amplification
KW  - Biodegradation
KW  - Human impacts
UR  - https://www.sciencedirect.com/science/article/pii/S0048969723069516?via%3Dihub
N2  - We report the levels of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in seawater and air, and the air-sea dynamics through diffusive exchange analysis in Fildes Bay, King George Island, Antarctica, between November 2019 and January 30, 2020. Hexachlorobenzene (HCB) was the most abundant compound in both air and seawater with concentrations around 39 +/- 2.1 pg m- 3 and 3.2 +/- 2.4 pg L-1 respectively. The most abundant PCB congener was PCB 11, with a mean of 3.16 +/- 3.7 pg m- 3 in air and 2.0 +/- 1.1 pg L-1 in seawater. The fugacity gradient estimated for the OCP compounds indicate a predominance of net atmospheric deposition for HCB, alpha-HCH, gamma-HCH, 4,4 '-DDT, 4,4 '-DDE and close to equilibrium for the PeCB compound. The observed deposition of some OCs may be driven by high biodegradation rates and/or settling fluxes decreasing the concentration of these compounds in surface waters, which is supported by the capacity of microbial consortium to degrade some of these compounds. The estimated fugacity gradients for PCBs showed differences between congeners, with net volatilization predominating for PCB -9, a trend close to equilibrium for PCB congeners 11, 28, 52, 101, 118, 138, and 153, and deposition for PCB 180. Snow amplification may play an important role for less hydrophobic PCBs, with volatilization predominating after snow/glacier melting. As hydrophobicity increases, the biological pump decreases the concentration of PCBs in seawater, reversing the fugacity gradient to atmospheric deposition. This study highlights the potential impacts of climate change, through glacier retreat, on the biogeochemistry of POPs, remobilizing those compounds previously trapped within the cryosphere which in turn will transform the Antarctic cryosphere into a secondary source of the more volatile POPs in coastal areas, influenced by snow and ice melting.
ER  -

LUARTE, Thais; Andrea HIRMAS-OLIVARES; Juan HOFER; Ricardo GIESECKE; Mireia MESTRE; Sergio GUAJARDO-LEIVA; Eduardo CASTRO-NALLAR; Andres PEREZ-PARADAL; Gustavo CHIANG; Rainer LOHMANN; Jordi DACHS; Susan Bengtson NASH; Jose PULGAR; Karla Andrea POZO; Petra PŘIBYLOVÁ; Jakub MARTINÍK a Cristobal GALBAN-MALAGON. Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica. \textit{Science of the Total Environment}. AMSTERDAM: Elsevier, 2024, roč.~908, January 2024, s.~1-13. ISSN~0048-9697. Dostupné z: https://doi.org/10.1016/j.scitotenv.2023.168323.

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