Private vehicles are high dominant mode of transport in Salem, India, since
there is no any commuter personal exposure information on air pollution.
This is the first pollutant exposure study in different private vehicles
across Salem city. In this study, critical air pollutant of fine particulate
matter (PM2.5) was measured. In addition, accumulation of carbon dioxide
(CO2) concentration also assessed in closed vehicles. The measured vehicles
were motorcycle, auto rickshaw, hatchback car, sedan car, sports utility
vehicle (SUV) car, and multi utility vehicle (MUV) van. The four-wheeler
(car and van) in-vehicle concentrations were assessed under four different
ventilation conditions. Student?s t-test statistical analysis was carried
out to determine the significance exposure level between the vehicles. It is
observed that there is no statistically significant difference (p ? 0.05)
between the vehicles of motorcycle and sedan; motorcycle and MUV; and auto
rickshaw and SUV for PM2.5 pollutant. A regression analysis shows a strong
negative correlation between PM2.5 and CO2 concentration in an
air-conditioning (AC) cars.
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