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Characterisation and seasonal variations of particles in the atmosphere of rural, urban and industrial areas：Organic compounds

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Journal of Environmental Sciences 2016年第6期28卷 45-56页

作者： Fabrice Cazier Paul Genevray Dorothée Dewaele habiba nouali Anthony Verdin Frédéric Ledoux Adam Hachimi Lucie Courcot Sylvain Billet Saad Bouhsina Pirouz Shirali Guillaume Garcon Dominique Courcot Common Center of Measurements (CCM) Univ. Littoral Cote d'Opale F-59140 Dunkirk France Unit of Environmental Chemistry and Interactions with Life UCEIV-EA4492 Univ. Littoral Cote d'Opale F-59140 Dunkirk France MicroPolluants Technologie SA 4 Rue de Bort Les Orgues F-57070 Saint Julien Les Metz France Oceanology and Geosciences Laboratory LOG UMR 8187 Univ. Littoral C6te d'Opale F-62230 Wimereux France Impact of Chemical Environment on Human Health Univ. Lille CHU Lille Institut Pasteur de Lille EA4483-IMPECS 59000 LILLE France

Atmospheric aerosol samples（PM2.5–0.3, i.e., atmospheric particles ranging from 0.3 to2.5 μm） were collected during two periods： spring–summer 2008 and autumn–winter 2008–2009, using high volume samplers equipped with cascade impactors. Two sites located in the Northern France were compared in this study： a highly industrialised city（Dunkirk） and a rural site（Rubrouck）. Physicochemical analysis of particulate matter（PM） was undertaken to propose parameters that could be used to distinguish the various sources and to exhibit seasonal variations but also to provide knowledge of chemical element composition for the interpretation of future toxicological studies. The study showed that PM2.5–0.3concentration in the atmosphere of the rural area remains stable along the year and was significantly lower than in the urban or industrial ones, for which concentrations increase during *** concentrations of polycyclic aromatic hydrocarbons（PAHs）, dioxins, furans and dioxin like polychlorinated biphenyls（DL-PCBs）, generated by industrial activities, traffic and municipal wastes incineration were detected in the samples. Specific criteria like Carbon Preference Index（CPI） and Combustion PAHs/Total PAHs ratio（CPAHs/TPAHs） were used to identify the possible sources of atmospheric pollution. They revealed that paraffins are mainly emitted by biogenic sources in spring–summer whereas as in the case of PAHs, they have numerous anthropogenic emission sources in autumn-winter（mainly from traffic and domestic heating）.

关键词： Environmental monitoring Airborne particles PAHs Paraffins Dioxins

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Adsorption of Pyridine onto Activated Montmorillonite Clays: Effect Factors, Adsorption Behavior and Mechanism Study

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American Journal of Analytical Chemistry 2018年第10期9卷 464-481页

作者： Zeinab Ibrahim Bachar Koubaissy Yehya Mohsen Tayssir Hamieh T. Jean Daou habiba nouali Maria-Laura Foddis Joumana Toufaily Laboratoire Matériaux Catalyse Environnement et Méthodes Analytiques (MCEMA) EDST FS Université Libanaise Campus Hariri Hadath Beyrouth Lebanon Laboratoire des Etudes Appliquées au Développement Durable et Energie Renouvelable (LEADDER) EDST Université Libanaise Campus Hariri Hadath Beyrouth Lebanon Université de Strasbourg Université de Haute Alsace Axe Matériaux à Porosité Contr&ocirc lée (MPC) Institut de Science des Matériaux de Mulhouse (IS2M) UMR CNRS 7361 ENSCMu 3 bis rue Alfred Werner Mulhouse Cedex France DICAAR-Dipartimento di Ingegneria Civile Ambientale e Architecttura Università de Cagliari Cagliari Italy

Activated Montmorillonite was applied for the sorption of pyridine as a health-toxic substance. Fourier-transform Infrared spectroscopy (FTIR), zeta potential analysis, thermogravimetric analysis (TGA), N2 physisorption analysis and X-ray diffraction (XRD) method were used to investigate the structure and composition of Montmorillonite. The batch sorption system was used to study the effect of different parameters on the adsorption. Results had shown that neutral pH had a significant effect on the sorption of pyridine;thermodynamic calculations indicated that the adsorption of pyridine over Montmorillonite was exothermic reaction and the equilibrium capacity was slightly increased by using H2SO4 as activating agent by comparison with that obtained by using HCl and H3PO4. Fitting the experimental data to isotherms models indicated that the experimental data were well fitted by Fowler Guggenheim isotherm models. Finally the results obtained by FTIR and TGA proved that the relative affinity of the pyridine toward the Montmorillonite was related to the electron donor-acceptor complexes that were formed between the basic sites (nitrogen or oxygen) and hydrogens (acidic site).

关键词： Adsorption Pyridine Montmorillonite Chemical Treatment Surface Properties

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