Abstract
Roadside BTEX Profiles in the Atmosphere at a Terai Region of Northern India
Highlights
Vehicular emissions remain a major contributor to air pollution in cities worldwide
Risks on human health can be posed by the ambient air pollutants such as suspended particulate matters and volatile organic compounds that originate from automobile exhaust, combustion exhaust, industry processes and domestic activities (Wong et al, 2002)
Large amount of air pollutants are released from the vehicle fleet, especially fine particulate matter (PM2.5, particles with aerodynamic diameter less than 2.5 mm) and a range of toxic gases including volatile organic compounds (VOCs) because emission control measures are not strongly enforced for old vehicles and inadequate inspection allows these old vehicles to remain in use (Oanh et al, 2013)
Summary
Vehicular emissions remain a major contributor to air pollution in cities worldwide. With global vehicle ownership projected to hit two billion by 2020, understanding its impact on air quality and human health is fundamental to future urban planning. Risks on human health can be posed by the ambient air pollutants such as suspended particulate matters and volatile organic compounds that originate from automobile exhaust, combustion exhaust, industry processes and domestic activities (Wong et al, 2002). Such activities have produced massive emissions of nitrogen oxides (NOx), carbon monoxide (CO), sulfur dioxide (SO2), particulate matter (PM), including black carbon (BC), volatile organic compounds (VOCs) and semi-VOCs (e.g. polycyclic aromatic hydrocarbons) (Wang et al, 2009). Large amount of air pollutants are released from the vehicle fleet, especially fine particulate matter (PM2.5, particles with aerodynamic diameter less than 2.5 mm) and a range of toxic gases including volatile organic compounds (VOCs) because emission control measures are not strongly enforced for old vehicles and inadequate inspection allows these old vehicles to remain in use (Oanh et al, 2013)
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