A5057751358- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Air Quality and Health Impacts
- Catalytic Processes in Materials Science
- Advanced Chemical Sensor Technologies
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Indoor Air Quality and Microbial Exposure
- Advanced Chemical Physics Studies
- Industrial Gas Emission Control
- Gas Sensing Nanomaterials and Sensors
- Aeolian processes and effects
- Spectroscopy and Laser Applications
- Hydrocarbon exploration and reservoir analysis
- TiO2 Photocatalysis and Solar Cells
- Adsorption, diffusion, and thermodynamic properties of materials
- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
- Advanced Combustion Engine Technologies
- Marine and environmental studies
- Catalysis and Oxidation Reactions
- Porphyrin and Phthalocyanine Chemistry
- Biodiesel Production and Applications
Institut Mines-Télécom
2021-2025
IMT Nord Europe
2016-2024
Université de Lille
2016-2024
Centre de recherche Inria Lille - Nord Europe
2014-2024
Université Lille Nord de France
2022
Institut de Combustion Aérothermique Réactivité et Environnement
2012-2021
Sage (United Kingdom)
2019
Centre National de la Recherche Scientifique
2012-2018
CNRS Ingénierie
2014-2018
Université d'Orléans
2013-2016
Abstract. Dust particles from high latitudes have a potentially large local, regional, and global significance to climate the environment as short-lived forcers, air pollutants, nutrient sources. Identifying locations of local dust sources their emission, transport, deposition processes is important for understanding multiple impacts high-latitude (HLD) on Earth's systems. Here, we identify, describe, quantify source intensity (SI) values, which show potential soil surfaces emission scaled...
For many years, the interaction between dust particles and water molecules has been a subject of interest for atmospheric sciences community. However, influence particle size on hygroscopicity mineral is poorly evaluated. In current study, diffused reflectance infrared Fourier transform (DRIFT) spectroscopy used to evaluate in situ adsorption natural Arizona test (ATD) particles. Five different ATD fractions, 0–3, 5–10, 10–20, 20–40, 40–80 μm, are used, corresponding entire range uplifted...
Furanoids are a class of reactive volatile organic compounds that major products from the pyrolysis and combustion biomass polymers, including cellulose, hemicellulose, lignin. Biomass burning is an atmospheric source furanoids increasing in frequency intensity throughout regions world. Once emitted to atmosphere, may react with oxidants form secondary pollutants hazardous human health, ozone (O3) aerosol (SOA). This review comprehensive assessment literature between 1977 present describing...
The heterogeneous interaction of limonene and toluene with Saharan dusts was investigated under dark conditions, pressure 1 atm, temperature 293 K. mineral dust samples were collected from six different regions along the Sahara desert, extending Tunisia to western Atlantic coastal areas Morocco, experiments carried out smallest sieved fractions, that is, inferior 100 μm. N2 sorption measurements, granulometric analysis, X-ray fluorescence diffraction (XRF XRD) measurements conducted...
Abstract Exposure to ambient particulate matter (PM) with an aerodynamic diameter of <10 μm (PM 10 ) is a well‐established health hazard. There increasing evidence that geogenic (Earth‐derived) particles can induce adverse biological effects upon inhalation, though there high variability in particle bioreactivity associated source and physicochemical properties. In this study, we investigated properties reactivity volcanic ash from the April 2021 eruption La Soufrière volcano, St....
Abstract. The uptake of glyoxal on realistic submicron mineral dust aerosol particles from a natural soil (Gobi Desert) is investigated during experiments in large simulation chamber, under variable experimental conditions relative humidity, irradiation, and ozone concentrations. the starts as soon injected chamber. At 80 % RH, measured coefficient γ = (9 ± 5) × 10⁻³. totality mass reacting transformed organic matter surface particles. accompanied by appearance marker peaks spectra...
The heterogeneous interaction of H(2)O(2) with TiO(2) surface was investigated under dark conditions and in the presence UV light using a low pressure flow tube reactor coupled quadrupole mass spectrometer. uptake coefficients were measured as function initial concentration gaseous ([H(2)O(2)](0) = (0.17-120) × 10(12) molecules cm(-3)), irradiance intensity (J(NO(2)) 0.002-0.012 s(-1)), relative humidity (RH 0.003-82%), temperature (T 275-320 K). Under conditions, deactivation upon exposure...
ABSTRACT The kinetics of the reactions propane, n ‐pentane, and ‐heptane with OH radicals has been studied using a low‐pressure flow tube reactor ( P = 1 Torr) coupled quadrupole mass spectrometer. rate constants title were determined under pseudo–first‐order conditions, monitoring radical consumption in excess alkanes. A newly developed high‐temperature was validated by study + propane reaction, where reaction constant, k 5.1 × 10 −17 T 1.85 exp(–160/ ) cm 3 molecule −1 s (uncertainty 20%),...
Abstract. The interaction of HO2 radicals with solid films Arizona Test Dust (ATD) was studied using a low-pressure flow reactor (1–9 Torr) combined modulated molecular beam mass spectrometer for monitoring the gaseous species involved. reactive uptake coefficient measured from kinetics consumption on Pyrex rods coated ATD as function concentration ((0.35–3.30) × 1012 molecule cm−3), relative humidity (RH = 0.02–94%), temperature (T 275–320 K) and UV irradiance intensity (JNO2 0–0.012 s−1)....
The experimental investigation of heterogeneous atmospheric processes involving mineral aerosols is extensively performed in the literature using proxy materials. In this work we questioned validity proxies such as Fe2O3, FeOOH, Al2O3, MgO, CaO, TiO2, MnO2, SiO2, and CaCO3 to represent behavior complex mixtures minerals, natural desert volcanic dusts. Five dusts three were compared a number metal oxides, commonly used mimic ability form sulfites sulfates on surface exposed SO2 gas. First,...
Abstract Exposure to volcanic ash is a long-standing health concern for people living near active volcanoes and in distal urban areas. During transport deposition, subjected various physicochemical processes that may change its surface composition and, consequently, bioreactivity. One such process the interaction with anthropogenic pollutants; however, potential adsorbed, deleterious organic compounds directly impact human unknown. We use an vitro bioanalytical approach screen presence of...
The atmospheric reaction of a series furan compounds (furan (F), 2-methylfuran (2-MF), 3-methylfuran (3-MF), 2,5-dimethylfuran (2,5-DMF), and 2,3,5-trimethylfuran (2,3,5-TMF)) with nitrate radical (NO3) has been investigated using the relative rate kinetic method in CHamber for Atmospheric Reactivity Metrology Environment (CHARME) simulation chamber at laboratoire de Physico-Chimie l'Atmosphere (LPCA) laboratory (Dunkerque, France). experiments were performed (294 ± 2) K pressure under dry...
Polyaniline (PAni)-based sensors are a promising solution for ammonia (NH
Kinetics and products of the reaction HONO with solid films Fe2O3 Arizona Test Dust (ATD) were investigated using a low pressure flow reactor (1 - 10 Torr) combined modulated molecular beam mass spectrometer. The reactive uptake was studied as function concentration ([HONO]0 = (0.6 15.0) × 10(12) molecules cm(-3)), relative humidity (RH 3 10(-4) 84.1%) temperature (T 275 320 K). Initial coefficients found to be similar under dark conditions in presence UV irradiation (JNO2 0.012 s(-1))...
The adsorption of isopropanol on Gobi dust was investigated in the temperature (T) and relative humidity (RH) ranges 273-348 K <0.01-70%, respectively, using zero air as bath gas. kinetic measurements were performed a novel experimental setup combining Fourier-Transform InfraRed spectroscopy (FTIR) selected-ion flow-tube mass spectrometry (SIFT-MS) for gas-phase monitoring. initial uptake coefficient, γ0, measured function several parameters (concentration, temperature, humidity, mass). γ0...