Physicochemical Characterization of Air Pollution Particulate Matter (PM2.5 and PM>2.5) in an Urban Area of Cotonou, Benin
نویسندگان
چکیده
PM2.5 and PM>2.5 samples were collected in Cotonou (Benin) using high volume cascade impaction air samplers. The samplings based on continuous collection over twelve days. Physical chemical characteristics of determined by size distribution (laser granulometry), specific surface areas (BET method), inorganic elements (ICP-MS), water-soluble ions (IC), CHNS analysis organic compounds (GC-MS). Average concentrations particulate matter 180.9 µg/m3 94.5 PM>2.5, respectively. higher recorded Ca2+,SO42−,NO3−, Na+ Cl− for both PM. Moreover, almost two-fold compared to with 10.7 total metals found versus 5.6 PM>2.5. Both PM under study presented similar repartition considering their percentages. Results suggested that contain agglomerates fine particles. Identification tools major pollution source as elements, paraffins, fatty acids ratios PAHs indicated originated from traffic exhaust.
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2023
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos14020201