Ambient air pollution by aromatic hydrocarbons in Algiers
Section snippets
Background
Aromatic hydrocarbons represent a significant fraction of the volatile organic compounds (VOCs) emitted in urban atmospheres by road traffic (Bailey and Eggleston, 1993; Singh et al., 1992; Zielinska et al., 1996; Seila et al., 1989). The use of unleaded gasoline, which is rich in aromatic hydrocarbons, has increased worldwide and the monitoring of these hydrocarbons in urban area has become an important issue. Monocyclic aromatic hydrocarbons (MAH) like benzene have been a prime target for
Sampling sites
In order to investigate the spatial distribution of VOCs, especially the benzene, toluene, ethylbenzene, (m, p)-and o-xylene (BTEX) compounds, in different areas, three sampling sites have been selected based on their population number and car traffic flow. Two sites (S1 and S2) are located in Algiers city and the third one (S3) is in the suburbs of Algiers. The sampling site S1 is located in the city centre near a busy street canyon, Boulevard Colonel Amirouche, where high car traffic and
VOCs in ambient air in Algiers city
VOC's analysis made on data collected during the first measurement campaign (1996) revealed a total of 47 semi-volatile compounds (Table 1). MAH species are the most abundant hydrocarbons whereas toluene is the major compound in all measured samples. This composition is typical of ambient air in urban settings; however, the analysis of concentrations shows important differences between compounds in the same sample and large differences between compounds concentration in Algiers as compared to
Conclusion
Analysis of ambient air samples at three sites in Algiers city reveals the presence of 47 semi-volatile compounds C6–C16 with a large number of aromatic species. The BTEX concentration levels in ambient air are mainly influenced by the road traffic. At roadside, the benzene and toluene average concentrations are 27 and 39 μg m−3, respectively. The BTEX average concentrations are generally two to three times higher than those measured in urban background area. The benzene to toluene and (m–p)
Acknowledgements
This project has been funded by the Ministère de l’Enseignement Supérieur et de la Recherche Scientifique (MESRS) of the government of Algeria.
References (37)
- et al.
The contribution of gasoline fuelled vehicle exhaust to the UK speciated hydrocarbon inventory
Science of Total Environment
(1993) - et al.
Mixing ratios of volatile organic compounds (VOCs) in the atmosphere of Karachi, Pakistan
Atmospheric Environment
(2002) - et al.
Air pollution in a large tropical city with a high traffic density—results of measurements in Lagos, Nigeria
Science of Total Environment
(1995) - et al.
Determination of aromatic hydrocarbons in urban air of Rome
Atmospheric Environment
(1997) - et al.
Survey of volatile organic compounds associated with automotive emissions in the urban airshed of Sao Paulo, Brazil
Atmospheric Environment
(2001) - et al.
La pollution automobile due aux hydrocarbures aromatiques monocycliques à Paris
Science of Total Environment
(1995) - et al.
Analysis and interpretation of the continuous hourly monitoring data for C2–C8 hydrocarbons at 12 United Kingdom sites during 1996
Atmospheric Environment
(2000) - et al.
Ambient levels of gas phase pollutants in Porto Alegre, Brazil
Atmospheric Environment
(1998) - et al.
Volatile organic compounds (VOCs) in urban atmosphere of Hong Kong
Chemosphere
(2002) - et al.
Proportions of volatile hazardous hydrocarbons vehicle-polluted urban air
Chemosphere
(1992)
Non-methane hydrocarbons in industrial locations of Bombay
Atmospheric Environment
Monoaromatic compounds in ambient air of various cities: a focus on correlations between the xylenes and ethylbenzene
Atmospheric Environment
Volatile organic compounds in the air of Izmir, Turkey
Atmospheric Environment
Seasonal characteristics of ambient volatile organic compounds in Seoul, Korea
Atmospheric Environment
Sources of atmospheric hydrocarbons in Sydney: a quantitative determination using a source reconciliation technique
Atmospheric Environment
Concentrations and co-occurence correlations of 88 volatile organic compounds (VOCs) in the ambient air of 13 semi-rural to urban locations in the United States
Atmospheric Environment
Air pollution monitoring in street canyons in North Rhine-Westphalia, Germany
Science of Total Environment
Non methane hydrocarbon composition of urban and rural atmospheres
Atmospheric Environment
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