Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp.
International audience Massive Sargassum sp. beachings have been occurring on Caribbean shores since 2011. The sargassum involved in such events are S. fluitans and S. natans, two drifting species whose proliferation has been observed in the southern North Atlantic Ocean. Both for reasons of environ...
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ftmuseumnhn:oai:HAL:hal-03856385v1 2024-04-14T08:16:05+00:00 Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. Devault, Damien Massat, Félix Baylet, Alexandre Dolique, Franck Lopez, Pascal-Jean Centre Universitaire de Formation et de Recherche de Mayotte (CUFR) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Laboratoire départemental d’analyses Drôme (LDA26) Partenaires INRAE 2021-01 https://hal.science/hal-03856385 https://doi.org/10.1007/s11356-020-12127-7 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s11356-020-12127-7 hal-03856385 https://hal.science/hal-03856385 doi:10.1007/s11356-020-12127-7 ISSN: 0944-1344 EISSN: 1614-7499 Environmental Science and Pollution Research https://hal.science/hal-03856385 Environmental Science and Pollution Research, 2021, 29 (1), pp.6-16. ⟨10.1007/s11356-020-12127-7⟩ Coastal environment Colloids Exposure Sediment Transfer Transudation [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2021 ftmuseumnhn https://doi.org/10.1007/s11356-020-12127-7 2024-03-21T16:31:33Z International audience Massive Sargassum sp. beachings have been occurring on Caribbean shores since 2011. The sargassum involved in such events are S. fluitans and S. natans, two drifting species whose proliferation has been observed in the southern North Atlantic Ocean. Both for reasons of environmental and sanitary assessment and repurposing, Sargassum sp. that is ashore piled up on beaches and decaying must be studied. Studies are required because of the concerning content of pelagic arsenic reported in the literature. They are also needed owing to Sargassum sp. contamination subsequent to historical pollution in the French West Indies by chlordecone, an insecticide used against the banana weevil Cosmopolites sordidus. The present study aims to describe the contamination and decontamination toxicokinetics of arsenic and chlordecone for Sargassum sp. stranding on shores and shallows in the Caribbean, in order to support the decision-making of the authorities involved. In situ and in mesocosm experiments performed in the present study show that Sargassum sp. contamination by chlordecone is mainly done after 2 h of exposition and reaches equilibrium after a day of exposure in polluted water, but BCF study suggests that the phenomenon is not actively supported (passive soption only). Arsenic transudation is intense in the case of immerged algae both. Half of the arsenic content is transudated after 13 h at sea and will transudate until vestigial arsenic concentration. Sargassum sp. contamination by arsenic, due to phytoaccumulation offshore, is broadly homogeneous before decay, and then leaks lead rapidly to a decrease in concentration in Sargassum sp. necromass, questioning the subsequent contamination of the coastal environment. Article in Journal/Newspaper North Atlantic Muséum National d'Histoire Naturelle (MNHM): HAL Environmental Science and Pollution Research 29 1 6 16 |
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Open Polar |
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Muséum National d'Histoire Naturelle (MNHM): HAL |
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ftmuseumnhn |
language |
English |
topic |
Coastal environment Colloids Exposure Sediment Transfer Transudation [SDE]Environmental Sciences |
spellingShingle |
Coastal environment Colloids Exposure Sediment Transfer Transudation [SDE]Environmental Sciences Devault, Damien Massat, Félix Baylet, Alexandre Dolique, Franck Lopez, Pascal-Jean Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. |
topic_facet |
Coastal environment Colloids Exposure Sediment Transfer Transudation [SDE]Environmental Sciences |
description |
International audience Massive Sargassum sp. beachings have been occurring on Caribbean shores since 2011. The sargassum involved in such events are S. fluitans and S. natans, two drifting species whose proliferation has been observed in the southern North Atlantic Ocean. Both for reasons of environmental and sanitary assessment and repurposing, Sargassum sp. that is ashore piled up on beaches and decaying must be studied. Studies are required because of the concerning content of pelagic arsenic reported in the literature. They are also needed owing to Sargassum sp. contamination subsequent to historical pollution in the French West Indies by chlordecone, an insecticide used against the banana weevil Cosmopolites sordidus. The present study aims to describe the contamination and decontamination toxicokinetics of arsenic and chlordecone for Sargassum sp. stranding on shores and shallows in the Caribbean, in order to support the decision-making of the authorities involved. In situ and in mesocosm experiments performed in the present study show that Sargassum sp. contamination by chlordecone is mainly done after 2 h of exposition and reaches equilibrium after a day of exposure in polluted water, but BCF study suggests that the phenomenon is not actively supported (passive soption only). Arsenic transudation is intense in the case of immerged algae both. Half of the arsenic content is transudated after 13 h at sea and will transudate until vestigial arsenic concentration. Sargassum sp. contamination by arsenic, due to phytoaccumulation offshore, is broadly homogeneous before decay, and then leaks lead rapidly to a decrease in concentration in Sargassum sp. necromass, questioning the subsequent contamination of the coastal environment. |
author2 |
Centre Universitaire de Formation et de Recherche de Mayotte (CUFR) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Laboratoire départemental d’analyses Drôme (LDA26) Partenaires INRAE |
format |
Article in Journal/Newspaper |
author |
Devault, Damien Massat, Félix Baylet, Alexandre Dolique, Franck Lopez, Pascal-Jean |
author_facet |
Devault, Damien Massat, Félix Baylet, Alexandre Dolique, Franck Lopez, Pascal-Jean |
author_sort |
Devault, Damien |
title |
Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. |
title_short |
Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. |
title_full |
Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. |
title_fullStr |
Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. |
title_full_unstemmed |
Arsenic and chlordecone contamination and decontamination toxicokinetics in Sargassum sp. |
title_sort |
arsenic and chlordecone contamination and decontamination toxicokinetics in sargassum sp. |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03856385 https://doi.org/10.1007/s11356-020-12127-7 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0944-1344 EISSN: 1614-7499 Environmental Science and Pollution Research https://hal.science/hal-03856385 Environmental Science and Pollution Research, 2021, 29 (1), pp.6-16. ⟨10.1007/s11356-020-12127-7⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11356-020-12127-7 hal-03856385 https://hal.science/hal-03856385 doi:10.1007/s11356-020-12127-7 |
op_doi |
https://doi.org/10.1007/s11356-020-12127-7 |
container_title |
Environmental Science and Pollution Research |
container_volume |
29 |
container_issue |
1 |
container_start_page |
6 |
op_container_end_page |
16 |
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1796314652465954816 |