Article (Scientific journals)
Exposure levels and health risk of PAHs associated with fine and ultrafine aerosols in an urban site in northern Algeria
Teffahi, A; Kerchich, Y; Moussaoui, Y et al.
2021In Air Quality, Atmosphere and Health
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Keywords :
Airborne particulate; PAHs; Algeria; PAHs diagnostic ratio; PCA
Abstract :
[en] Size distribution of toxicants in airborne particulates remains insufficiently investigated in Algeria. A 1-year campaign was performed at Bab Ezzouar, Algiers (Algeria), aimed at characterizing particulates for their physical and chemical features. For this purpose, scanning electronic microscopy (SEM), Raman spectroscopy (RaS), and GC-MS methodologies were applied. The samples were collected on daily basis by means of a high-volume sampling (HVS) system equipped with cascade impactor separating three size fractions, i.e., particles with aerodynamic diameters d < 1.0 μm (PM1), 1.0 μm 2.5), and 2.5 μm 10), respectively. The organic fraction was recovered from substrate through solvent extraction in an ultrasonic bath, separated and purified by column chromatography, then analyzed by gas chromatography coupled with mass spectrometry (GC-MS). Investigation was focused on polycyclic aromatic hydrocarbons (PAHs) and the concentration ratios suitable to investigate the source nature. Further information was drawn from SEM and Raman analyses. Total PAH concentrations ranged broadly throughout the study period (namely, from 4.1 to 59.7 ng m-3 for PM1, from 2.72 to 32.3 ng m-3 for PM2.5 and from 3.30 to 32.7 ng m-3 for PM10). Both approaches and principal component analysis (PCA) of data revealed that emission from vehicles was the most important PAH source, while tobacco smoke provided an additional contribution.
Research center :
MolSys - Molecular Systems - ULiège
Disciplines :
Chemistry
Author, co-author :
Teffahi, A
Kerchich, Y
Moussaoui, Y
Romagnoli, P
Balducci, C
Malherbe, Cédric ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique inorganique
Kerbachi, R
Eppe, Gauthier  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique inorganique
Cecinato, A
Language :
English
Title :
Exposure levels and health risk of PAHs associated with fine and ultrafine aerosols in an urban site in northern Algeria
Publication date :
2021
Journal title :
Air Quality, Atmosphere and Health
ISSN :
1873-9318
eISSN :
1873-9326
Publisher :
Springer, Germany
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 August 2021

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