Assessment of Inorganic Chemical Composition of PM2.5 Aerosols in Tiaret-City, Algeria

The goal of this study is to determine and quantify the inorganic compounds in PM2.5 aerosols collected in educational establishments in Tiaret, Algeria, using a two-stage Dekati® PM10 impactor. It also planned to track the dispersion of these particles in areas near forests, urban fabric, and metropolitan areas with heavy traffic, as well as to pinpoint the source of this pollution. In Tiaret, 23 elementary schools were chosen as sampling sites. PM2.5 was collected over the course of the winter and summer seasons. The FTiR-ATR spectroscopic analysis revealed that sulphate ions were higher in the summer than in the winter, as well as nitrate and ammonium ions, which did not demonstrate a significant seasonal change. The major species in urban environments are NO3- and SO4-2, which, due to the existence of a significant amount of NOx and SO2, change into nitrate and sulphate ions, respectively, by gas-particle conversion. In areas near to the forest, the proportion of these species is lower. In both sample times, however, the abundance of these ions is in the same order. The primary sources of NOx in urban areas are combustion phenomena, particularly those related to the transportation system, which is characterised by extremely intensive traffic in the city’s agglomeration.

Author (s) Details


Dr. Naceur Khadidja
Laboratory of Agro-biotechnology and Nutrition in Semi-arid Areas. Faculty of Natural Sciences and Life, University of Tiaret, Tiaret BP 78 Zaaroura, Tiaret, Algeria.

Prof. Maatoug Mohamed
Laboratory of Agro-biotechnology and Nutrition in Semi-arid Areas. Faculty of Natural Sciences and Life, University of Tiaret, Tiaret BP 78 Zaaroura, Tiaret, Algeria.

Belarbi El Habib
Synthesis and catalysis Laboratory, Ibn Khaldoun University, BP78 RP 14000 Tiaret- Algeria.

Serge Bresson
Laboratory of Complex System Physics, Picardie Jules Verne University, 33 rue St. Leu, 80039 Amiens Cedex, France.

View Book :- https://stm.bookpi.org/CACS-V7/article/view/5172

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