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Dergiler / Atmospheric Pollution Research / 2017 / Cilt: 8 - Sayı: 5

An analysis of the spatial distribution of O3 and its precursors during summer in the urban atmosphere of Riyadh, Saudi Arabia

Badr H. Alharbi
Abdulilah K. Alduwais
Abdulrahman H. Alhudhodi
Sayfa
861–872
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

O3 concentrations averaged 34.59 ± 24.17 ppb and were a maximum of 277.47 ppb, occasionally violating the 1-h national standard (120 ppb) and frequently exceeding World Health Organization (WHO) and United States Environmental Protection Agency (EPA) standards.

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Amaç & Hipotez:Ozone (O3) concentration, along with the concentrations of 10 precursors (acetone, toluene, ethyl- benzene, benzene, xylenes, styrene, cyclohexane, NO, NO2, and CO), were measured and characterized at 16 locations in Riyadh, the capital city of Saudi Arabia, for the period of May through August 2012.
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Temel Bulgular & Veri:The results showed that concentrations of all O3 precursors were high in central and industrial areas, owing mainly to road traffic volume and industrial emissions.
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Sonuç & Katkı:O3 concentrations averaged 34.59 ± 24.17 ppb and were a maximum of 277.47 ppb, occasionally violating the 1-h national standard (120 ppb) and frequently exceeding World Health Organization (WHO) and United States Environmental Protection Agency (EPA) standards.
🔬Tür:Araştırma Makalesi
📍Kapsam:2012 Verileri
⚙️Değişkenler:Alan Parametreleri

Özet

Ozone (O3) concentration, along with the concentrations of 10 precursors (acetone, toluene, ethyl- benzene, benzene, xylenes, styrene, cyclohexane, NO, NO2, and CO), were measured and characterized at 16 locations in Riyadh, the capital city of Saudi Arabia, for the period of May through August 2012. The results showed that concentrations of all O3 precursors were high in central and industrial areas, owing mainly to road traffic volume and industrial emissions. Except for benzene, all pollutants featured a skewed distribution, which indicates that they might occasionally be influenced by contiguous sources of air pollution and/or by emissions from heavy air polluters. The benzene distribution does not follow this behavior, possibly due to the shortage of substantial stationary benzene emitters. Also, the considerable difference between the median and the mean of both xylene and toluene distributions suggests local emission impacts in Riyadh. O3 concentrations averaged 34.59 ± 24.17 ppb and were a maximum of 277.47 ppb, occasionally violating the 1-h national standard (120 ppb) and frequently exceeding World Health Organization (WHO) and United States Environmental Protection Agency (EPA) standards.

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Bu Makaleye Atıf Yap

Alharbi, B. H., Alduwais, A. K., Alhudhodi, A. H. (2017). An analysis of the spatial distribution of O3 and its precursors during summer in the urban atmosphere of Riyadh, Saudi Arabia. Atmospheric Pollution Research, Cilt: 8 - Sayı: 5, 861–872. https://ajindex.com/articles/216967

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