Temporal variation of PM10, PM2.5 and gaseous pollutants (NOx, SO2) particles suspended in the atmosphere of an urban sit in Bou-Ismail.

A. Lemou, L. Rabhi, N. Cherifi, R. Ladji, N. Yassaa


Abstract: In this work, we studied the daily variations of concentration of PM10, PM2.5 and gaseous pollutants at Bou-Ismail industrial area. An Airpointer carried out the different measurements during the month of February. This study revealed that PM10 and PM2.5 concentrations ranged from 1.65 μg/m3 to 38.66 μg/m3 and from 0.75μg/m3 to 12.77 μg/m3 respectively. The highest concentrations were recorded on 23 February with 38.66 μg/m3 in PM10 and 12.77 μg/m3 in PM2.5. This concentration is certainly related to the high road traffic density. It is important to note that PM10 and PM2.5 concentrations did not exceed the WHO limit (50 μg/m3) and the Algerian regulation (80 μg/m3). Variations in the mean hourly concentrations of NO and NO2 show stability during the midnight period until 7:00 AM with low concentrations. On the other hand, we notice during the day (from 8:00 AM until 6:00 PM) high concentrations of NO and NO2.  Variations in the mean hourly concentrations of SO2 show two important peaks during the morning (0.27-0.32 ppb) and the evening peak hours (0.1-0.11 ppb).

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