PM2.5-bound polycyclic aromatic hydrocarbons (PAHs): quantification and source prediction studies in the ambient air of automobile workshop using the molecular diagnostic ratio

Asian Journal of Atmospheric Environment, Год журнала: 2024, Номер 18(1)

Опубликована: Фев. 20, 2024

Abstract The presence of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere has been linked to health concerns, including cancer. Automobile workshops are significant contributors PAH emissions due their operations. Hence, this investigation aimed identify and quantify sources PM2.5-bound PAHs ambient air automobile Benin City, Nigeria, using molecular diagnostic ratios. PM2.5 samples were collected from 60 automobiles over 1 year, during rainy (April November) dry (December March) seasons 2019. Sample collection utilized a low-volume sampler with quartz filter paper, extraction was performed 1:1 mixture acetone dichloromethane. analysis involved an HP Agilent Technology 6890 Gas Chromatography (GC) system flame ionization detector. annual average concentrations City 269.87 ± 249.32 ng/m 3 (dry season) 216.30 204.89 (wet season). Molecular ratios, such as Fl/(Fl + Py), An/(An Phe), BaP/(BaP Chry), BbF/BkF, InP/(InP BghiP), BaA/(BaA Chr), aided identifying sources. Gasoline combustion, diesel traffic emissions, panel welders found be primary near vehicle workshops. These findings provide crucial insights for developing effective strategies reduce protect public surrounding City.

Язык: Английский

Enhancing petroleum-contaminated soil remediation using pulverized rice straw

Chemical Papers, Год журнала: 2024, Номер 78(8), С. 4909 - 4918

Опубликована: Май 2, 2024

Язык: Английский