Determination of the distribution and speciation of selenium in an argillaceous sample using chemical extractions and post-extractions analyses: application to the hydrogeological experimental site of Poitiers
| العنوان: | Determination of the distribution and speciation of selenium in an argillaceous sample using chemical extractions and post-extractions analyses: application to the hydrogeological experimental site of Poitiers |
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| المؤلفون: | Joseph Bassil, Véronique Kazpard, Moumtaz Razack, Maïté Bueno, Pamela Di Tullo, Aude Naveau, Laurent Grasset |
| المساهمون: | Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Lebanese University [Beirut] (LU), Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Pau et des Pays de l'Adour (UPPA), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Pau et des Pays de l'Adour (UPPA) |
| المصدر: | Environmental Science and Pollution Research Environmental Science and Pollution Research, Springer Verlag, 2016, 23 (10), pp.9598-9613. ⟨10.1007/s11356-016-6113-7⟩ |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Geologic Sediments, 010504 meteorology & atmospheric sciences, Speciation, Health, Toxicology and Mutagenesis, media_common.quotation_subject, chemistry.chemical_element, Fraction (chemistry), Chemical Fractionation, Distribution, 010501 environmental sciences, 01 natural sciences, Gas Chromatography-Mass Spectrometry, Matrix (chemical analysis), Selenium, Environmental Chemistry, Organic matter, Dissolution, 0105 earth and related environmental sciences, media_common, chemistry.chemical_classification, Total organic carbon, Black clay, [CHIM.CATA]Chemical Sciences/Catalysis, General Medicine, Pollution, 6. Clean water, chemistry, Chemical extractions, Environmental chemistry, Thermochemolysis, France, Gas chromatography–mass spectrometry |
| الوصف: | International audience; To better understand selenium’s dynamics in environmental systems, the present study aims to investigate selenium speciation and distribution in black argillaceous sediments, partially fulfilling karstic cavities into the Hydrogeological Experimental Site of Poitiers. These sediments are suspected to be responsible for selenium concentrations exceeding the European Framework Directive’s drinking water limit value (10 μg L−1) in some specific wells. A combination of a sequential extractions scheme and single parallel extractions was thus applied on a representative argillaceous sample. Impacts of the extractions on mineral dissolution and organic matter mobilization were followed by quantifying major cations and total organic carbon (TOC) in the aqueous extracts. The nature of the released organic matter was characterized using thermochemolysis coupled with gas chromatography–mass spectrometry (GC-MS). About 10 % of selenium from the black argillaceous studied matrix could be defined as ‘easily mobilizable’ when the majority (around 70 %) revealed associated with the aliphatic and alkaline-soluble organic matter’s fraction (about 20 %). In these fractions, selenium speciation was moreover dominated by oxidized species including a mixture of SeVI (20–30 %) and SeIV (70–80 %) in the ‘easily mobilizable’ fraction, while only SeIV was detected in alkaline-soluble organic matter fraction. |
| تدمد: | 1614-7499 0944-1344 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de227a0b5c0fa6fee03a974b38c9b6bb https://doi.org/10.1007/s11356-016-6113-7 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....de227a0b5c0fa6fee03a974b38c9b6bb |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16147499 09441344 |
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