Publications by authors named "Hossein Hassankhany"
With over 8 million inhabitants and 4 million motor vehicles on the streets, Tehran is one of the most crowded and polluted cities in the Middle East. Frequent exceedances of national daily PM limit have been reported in this city during the last decade, yet, the chemical composition and sources of fine particles are poorly determined. In the present study, 24-hour PM samples were collected at two urban sites during two separate campaigns, a one-year period from 2014 to 2015 and another three-month period at the beginning of 2017.
View Article and Find Full Text PDFThe spatiotemporal variability of ambient volatile organic compounds (VOCs) in Tehran, Iran, is not well understood. Here we present the design, methods, and results of the Tehran Study of Exposure Prediction for Environmental Health Research (Tehran SEPEHR) on ambient concentrations of benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene (BTEX), and total BTEX. To date, this is the largest study of its kind in a low- and middle-income country and one of the largest globally.
View Article and Find Full Text PDFArticle Synopsis
- Land use regression (LUR) models for air pollution have rarely been created for megacities in low- and middle-income countries, making them crucial for epidemiological studies.
- A study developed annual and seasonal LUR models for nitrogen oxides (NO, NO2, NOX) in Tehran by analyzing data from 23 monitoring stations, achieving R(2) values indicating good predictive ability.
- The most significant factors influencing pollution levels were proximity to traffic zones, schools, green space, and urban features, with the findings highlighting the need for further research on air pollution's health impacts in Tehran.