Výsledky vyhledávání - "Sabrina Halladja"

Photosensitizing and antioxidant activities of humic substances: A case study of beta(2)-adrenoceptor agonist terbutaline

Autor: Jean-Marc Chovelon, Sabrina Halladja, Corinne Ferronato, Mohamad Sleiman, Lei Zhou, Claire Richard

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry
Journal of Photochemistry and Photobiology A: Chemistry, Elsevier, 2020, 391 (---), ⟨10.1016/j.jphotochem.2020.112360⟩
Journal of Photochemistry and Photobiology A: Chemistry, 2020, 391 (---), ⟨10.1016/j.jphotochem.2020.112360⟩

Humic substances (HS) play an important role in the phototransformation of micro-pollutants in surface waters and a significant part of this reactivity is often attributed to oxidant triplet excited states (3HS*). The present study aims to understand

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30e24c1d6af8b1da1529fffaba4459c6
https://hal.archives-ouvertes.fr/hal-02510669

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Mechanism of bromoxynil phototransformation: Effect of medium and surfactant

Autor: Zelikha Bououden, Martin Leremboure, Claire Richard, Mohamad Sleiman, Sabrina Halladja

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 365:151-156

Bromoxynil (BXN, 3,5-dibromo-4-hydroxybenzonitrile) is a herbicide that is classified as a highly hazardous chemical, toxic for the reproduction. The processes and mechanisms regarding the fate of this compound in the environmental compartments subje

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8366643506442764732b848845a84264
https://doi.org/10.1016/j.jphotochem.2018.07.043

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Influence of humic substances on the riboflavin photosensitized transformation of 2,4,6-trimethylphenol

Autor: Sofia Kouras-Hadef, Sabrina Halladja, Claire Richard, Amina Amine-Khodja

Publikováno v: Photochemistry and Photobiology A-Chemistry
Photochemistry and Photobiology A-Chemistry, 2012, 229, pp.33-38
Journal of Photochemistry and Photobiology A: Chemistry
Journal of Photochemistry and Photobiology A: Chemistry, Elsevier, 2002, pp.33-38
Journal of Photochemistry and Photobiology A: Chemistry, 2002, 229, pp.33-38

International audience; Humic substances are known to affect the fate of organic chemicals in the environment. While their capacity to produce reactive species upon irradiation has been intensively studied, their inhibiting properties have been much

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b13a60722091ea3dc1e71060908d8613
https://hal.archives-ouvertes.fr/hal-00688045

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Relationship between Photosensitizing and Emission Properties of Peat Humic Acid Fractions Obtained by Tangential Ultrafiltration

Autor: Abdelaziz Boulkamh, Sabrina Halladja, Ghislain Guyot, Alexandra ter Halle, Luciano Cavani, Giampietro Corrado, Claudio Ciavatta, Claire Richard

Publikováno v: Environmental Science and Technology
Environmental Science and Technology, American Chemical Society, 2009, 43 (12), pp.4348-4354
Environmental Science and Technology, 2009, 43 (12), pp.4348-4354

Peat humic acid was fractionated by tangential ultrafiltration into six nominal molecular weight (NMW) fractions, HA5-10, HA10-20, HA20-50, HA50-100, HA100-300 and HA300, which were purified by dialysis using a 0.5 kDa membrane. The absorbing and emi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1da2407fab4a59a017f284f5f421438a
https://hal.archives-ouvertes.fr/hal-00402677

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Fulvic acid-mediated phototransformation of mecoprop. A pH-dependent reaction

Autor: Abdelaziz Boulkamh, Jean-François Pilichowski, Claire Richard, Alexandra ter Halle, Sabrina Halladja

Publikováno v: Photochemical & Photobiological Sciences
Photochemical & Photobiological Sciences, 2009, 8 (7), pp.1066-1071
Photochemical & Photobiological Sciences, Royal Society of Chemistry, 2009, 8 (7), pp.1066-1071

Elliott soil fulvic acid sensitized the phototransformation of mecoprop in aqueous medium. The reaction was selective, leading to the main formation of 4-chloro-2-methylphenol in aerated and in deoxygenated neutral solution. In turn, 4-chloro-2-methy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::676c44fa88f5e8f5a7b362aae4043cc3
https://hal.science/hal-00402537

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Inhibition of humic substances mediated photooxygenation of furfuryl alcohol by 2,4,6-trimethylphenol. Evidence for reactivity of the phenol with humic triplet excited states

Autor: Claire Richard, and Abdelaziz Boulkamh, Sabrina Halladja, Jean-Pierre Aguer, Alexandra ter Halle

Publikováno v: Environmental sciencetechnology. 41(17)

To probe the reactivity of 2,4,6-trimethylphenol with humic triplet excited states, we investigated its influence on the humic substances-mediated photooxygenation offurfuryl alcohol. Elliott soil humic and fulvic acids were employed for these experi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d50ad1aed5c285bcf949737d8277b8
https://pubmed.ncbi.nlm.nih.gov/17937283

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Photolysis of fluometuron in the presence of natural water constituents

Autor: Alexandra ter Halle, Sabrina Halladja, Claire Richard, Amina Amine-Khodja, Abdelaziz Boulkamh

Publikováno v: Chemosphere
Chemosphere, Elsevier, 2007, 69 (10), pp.1647-1654. ⟨10.1016/j.chemosphere.2007.05.035⟩
Chemosphere, Elsevier, 2007, 69 (10), pp.1647-1654
Chemosphere, 2007, 69 (10), pp.1647-1654. ⟨10.1016/j.chemosphere.2007.05.035⟩

International audience; Phototransformation of the herbicide fluometuron (1 μM) in natural sunlight was investigated in neutral Milli-Q water and in synthetic waters containing either fulvic acids, nitrate ions or both in order to mimic reactions ta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::089c25988e59910c1c48b69291698757
https://hal.archives-ouvertes.fr/halsde-00180209/file/Halladja.pdf

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Auto-remediation of surface waters by solar-light: Photolysis of 1-naphthol, and two herbicides in pure and synthetic waters

Autor: Sabrina Halladja, A. ter Halle, O. Brahmia, Claire Richard, M. Malouki

Publikováno v: Catalysis Today
Catalysis Today, Elsevier, 2007, 124, pp.82-87
Catalysis Today, 2007, 124, pp.82-87

International audience; Solar-light reaching the earth surface is able to induce chemical reactions in absorbing chemicals. For many organic pollutants dispersed in surface waters, photolysis is an important transformation process. It results from ab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7781a9b5bde9e323d92a66f6b3a80044
https://hal.archives-ouvertes.fr/hal-00246297

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