Assessment of mercury speciation in feathers using species-specific isotope dilution analysis
International audience Seabirds are considered as effective sentinels of environmental marine contamination and their feathers are extensively used as non-lethal samples for contaminant biomonitoring. This tissue represents the main route for mercury (Hg) elimination in seabirds and contains predomi...
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Online Access: | https://hal.science/hal-01559164 https://hal.science/hal-01559164/document https://hal.science/hal-01559164/file/Renedo%20et%20al%202017%20TALANTA.pdf https://doi.org/10.1016/j.talanta.2017.05.081 |
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ftunivpau:oai:HAL:hal-01559164v1 2024-05-12T08:11:32+00:00 Assessment of mercury speciation in feathers using species-specific isotope dilution analysis Renedo, Marina Bustamante, Paco Tessier, Emmanuel Pedrero, Zoyne Cherel, Yves Amouroux, David LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 2017 https://hal.science/hal-01559164 https://hal.science/hal-01559164/document https://hal.science/hal-01559164/file/Renedo%20et%20al%202017%20TALANTA.pdf https://doi.org/10.1016/j.talanta.2017.05.081 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2017.05.081 hal-01559164 https://hal.science/hal-01559164 https://hal.science/hal-01559164/document https://hal.science/hal-01559164/file/Renedo%20et%20al%202017%20TALANTA.pdf doi:10.1016/j.talanta.2017.05.081 info:eu-repo/semantics/OpenAccess ISSN: 0039-9140 Talanta https://hal.science/hal-01559164 Talanta, 2017, 174, pp.100 - 110. ⟨10.1016/j.talanta.2017.05.081⟩ [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology info:eu-repo/semantics/article Journal articles 2017 ftunivpau https://doi.org/10.1016/j.talanta.2017.05.081 2024-04-12T00:09:08Z International audience Seabirds are considered as effective sentinels of environmental marine contamination and their feathers are extensively used as non-lethal samples for contaminant biomonitoring. This tissue represents the main route for mercury (Hg) elimination in seabirds and contains predominantly methylmercury (MeHg). In this work, we developed a robust analytical technique for precise and accurate simultaneous quantification of MeHg, inorganic Hg (iHg) and consequently total Hg (THg), in feathers by gas-chromatography (GC)-ICPMS analyses using species-specific isotope dilution technique. An optimisation of the extraction method was carried out by testing different extraction systems, reagents and spiking procedures using an internal reference feather sample. The procedure was validated for MeHg and THg concentrations with a human hair certified reference material. Microwave nitric acid extraction with spike addition before the extraction provided the best recovery and was chosen as the most appropriate species simultaneous extraction method (SSE). An additional assessment was performed by comparison of our developed extraction method and a MeHg specific extraction technique (MSE) classically used for Hg speciation studies on feathers. The developed method was applied to feather samples from a large number of seabirds from the Southern Ocean (penguins, albatrosses, petrels and skuas) to investigate the variability of Hg speciation across a large range of Hg exposure conditions and concentrations. In all cases, MeHg accounted for > 90% of THg, thus verifying the predominance of organic Hg over iHg in feathers. Article in Journal/Newspaper Southern Ocean HAL e2s UPPA (Université de Pau et des Pays de l'Adour) Southern Ocean Talanta 174 100 110 |
institution |
Open Polar |
collection |
HAL e2s UPPA (Université de Pau et des Pays de l'Adour) |
op_collection_id |
ftunivpau |
language |
English |
topic |
[SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
spellingShingle |
[SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology Renedo, Marina Bustamante, Paco Tessier, Emmanuel Pedrero, Zoyne Cherel, Yves Amouroux, David Assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
topic_facet |
[SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
description |
International audience Seabirds are considered as effective sentinels of environmental marine contamination and their feathers are extensively used as non-lethal samples for contaminant biomonitoring. This tissue represents the main route for mercury (Hg) elimination in seabirds and contains predominantly methylmercury (MeHg). In this work, we developed a robust analytical technique for precise and accurate simultaneous quantification of MeHg, inorganic Hg (iHg) and consequently total Hg (THg), in feathers by gas-chromatography (GC)-ICPMS analyses using species-specific isotope dilution technique. An optimisation of the extraction method was carried out by testing different extraction systems, reagents and spiking procedures using an internal reference feather sample. The procedure was validated for MeHg and THg concentrations with a human hair certified reference material. Microwave nitric acid extraction with spike addition before the extraction provided the best recovery and was chosen as the most appropriate species simultaneous extraction method (SSE). An additional assessment was performed by comparison of our developed extraction method and a MeHg specific extraction technique (MSE) classically used for Hg speciation studies on feathers. The developed method was applied to feather samples from a large number of seabirds from the Southern Ocean (penguins, albatrosses, petrels and skuas) to investigate the variability of Hg speciation across a large range of Hg exposure conditions and concentrations. In all cases, MeHg accounted for > 90% of THg, thus verifying the predominance of organic Hg over iHg in feathers. |
author2 |
LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Renedo, Marina Bustamante, Paco Tessier, Emmanuel Pedrero, Zoyne Cherel, Yves Amouroux, David |
author_facet |
Renedo, Marina Bustamante, Paco Tessier, Emmanuel Pedrero, Zoyne Cherel, Yves Amouroux, David |
author_sort |
Renedo, Marina |
title |
Assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
title_short |
Assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
title_full |
Assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
title_fullStr |
Assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
title_full_unstemmed |
Assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
title_sort |
assessment of mercury speciation in feathers using species-specific isotope dilution analysis |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-01559164 https://hal.science/hal-01559164/document https://hal.science/hal-01559164/file/Renedo%20et%20al%202017%20TALANTA.pdf https://doi.org/10.1016/j.talanta.2017.05.081 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0039-9140 Talanta https://hal.science/hal-01559164 Talanta, 2017, 174, pp.100 - 110. ⟨10.1016/j.talanta.2017.05.081⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2017.05.081 hal-01559164 https://hal.science/hal-01559164 https://hal.science/hal-01559164/document https://hal.science/hal-01559164/file/Renedo%20et%20al%202017%20TALANTA.pdf doi:10.1016/j.talanta.2017.05.081 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.talanta.2017.05.081 |
container_title |
Talanta |
container_volume |
174 |
container_start_page |
100 |
op_container_end_page |
110 |
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1798855277351534592 |