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Analysis of PM concentrations in the urban area of Bejaia

Benaissa F., Maesano C. N., Alkama R., Annesi-Maesano I.

Environment Protection Engineering

2018

Vol. 44, nr 1

75--84

The particulate matter (PM10, PM7, PM4, PM2.5 and PM1) mass concentrations in Bejaia City, Algeria, over the course of one week, from July 8 to July 14, 2015, have been presented for the first time. The study covered eight urban sampling sites and 169 measurements have been obtained. The average city-wide PM10 and PM2.5 concentrations measured during this sampling were 87.8±33.9 and 28.7±10.6 μg/m3, respectively. These results show that the particulate matter levels are high and exceed the World Health Organization Air Quality Guidelines (WHO AQG) and European 24-hour average limit values (50 μg/m3for PM10and 25 fig/m3for PM2.5). The PM1, PM2.5, PM4 and PM7 fractions accounted for 0.15,0.32,0.56 and 0.78, respectively, of the PM10 concentrations. The analysis revealed that variations of PM concentration in the study region were influenced primarily by traffic. Lower PM10 concentrations (21.7 and 33.1 μg/m3) were recorded in residential sites, while higher values (53.1, and 45.2 μg/m3) in city centers.