Document Details

Document Type : Article In Journal 
Document Title :
Profile and source identification of polycyclic aromatic hydrocarbons in dust deposited on leaves of street trees as indicators of air pollution sources in Cairo
الشكل العام والتعرف على مصدر الهيدروكربونات الأروماتية المتعددة الحلقات فى الأتربة المتساقطة على أوراقِ أشجارِ الشوارعِ كمؤشر لمصادرِ تلوث الهواء في القاهرة
 
Document Language : English 
Abstract : Abstract Polycyclic aromatic hydrocarbons (PAHs) were determined in paved street dust and dust deposited on leaves of street trees (leaves dust) in two urban areas in greater Cairo (Ramsis in the city centre of Cairo and Haram). The concentrations of the individual PAH compounds in paved street dust and leaves dust in Ramsis area were higher than those found in Haram area. The total PAH concentrations were: 92.32 and 40.41 µg/g in paved street dust and 337.81 and 175.51 µg/g in leaves dust in Ramsis and Haram areas, respectively. The concentrations of total and individual PAH compounds in the main street were higher than those found in the substreets in both study areas. The main street/substreet concentration ratios of the total PAHs were 2.29 and 4.01 for paved street dust and 2.22 and 2.27 for leaves dust in Ramsis and Haram areas, respectively. The total carcinogenic PAH compounds represented 55.10% and 54.12% of the total concentration of PAHs in paved street dust and 54.79% and 53.17% of that in leaves dust in Ramsis and Haram areas, respectively. The profile of the individual PAH compounds and the distribution of PAHs with different ring numbers in the paved street dust and leaves dust in both study areas indicate that the heavy PAH compounds (four to six aromatic rings) were the predominant compounds. Moreover, the light molecular weight/ high molecular weight PAH concentration ratios and the ratios of the sum of major combustion specific compounds (ΣCOMB) to the sum of PAHs (ΣCOMB/ ΣPAHs) in paved street dust and leaves dust indicate that combustion activities greatly affected the PAH concentration in the paved street dust and leaves dust in both study areas. In addition, the phenanthrene/ anthracene (PHE/ ANT) and fluoranthene/ pyrene (FLT/ PYR) concentration ratios indicate that pyrogenic sources were the predominant sources of PAHs in paved street dust and leaves dust in both urban areas in Cairo. The benzo(a)pyrene/ benzo(ghi)perylene (BaP/ BGP), benz(a)anthracene/ chrysene (BaA/ CRY) and indeno(1, 2, 3,–cd)pyrene/ benzo(ghi)perylene (IND/ BGP) concentration ratios indicate that PAHs in Ramsis and Haram areas were more influenced by vehicular exhaust emissions than other sources. Diesel vehicles were the dominant sources of PAHs in Ramsis area, whereas gasoline vehicles were the dominant sources in Haram area. 
ISSN : 1219-1221 
Journal Name : Central European Journal of Occupational and Environmental Medicine 
Volume : 13 
Issue Number : 1 
Publishing Year : 1428 AH
2007 AD 
Article Type : Article 
Added Date : Monday, August 29, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ممدوح إبراهيم خضيرkhoder, Mamdouh IbraheimInvestigatorDoctorateKhoder_55@yahoo.com

Files

File NameTypeDescription
 31964.pdf pdf 

Back To Researches Page