![]() ![]() "A Comprehensive Analysis of the Air Quality in the NYC Subway System " (2022), "A Comprehensive Analysis of the Air Quality in the NYC Subway System ", 2022, Export RIS Citation Information.Top: A 1 train made up of ten R62A cars enters the 207th Street elevated station.īottom: An E train made up of ten R160A cars enters the 42nd Street–Port Authority Bus Terminal station. Office of the Assistant Secretary for Research and Technology University Transportation Centers (UTC) Program United States. Tandon School of Engineering Ĭorporate Contributor(s) : United States. ![]() Results also suggest that when train cars are at stations with doors open, mixing of air between the platform and cars results in a rapid increase of PM concentrations in the cars.ĬITE Title : A Comprehensive Analysis of the Air Quality in the NYC Subway System Ĭreator(s) : Ghandehari, Masoud Azad, Shams Ĭorporate Creator(s) : Connected Cities for Smart Mobility toward Accessible and Resilient Transportation Center (C2SMART) New York University. Other trace elements measured in the NYC subway system include silicon, copper, nickel, aluminum, calcium, barium, Manganese, and chromium. Using particle element analysis, we found that the concentration of iron particles in subway stations was 140 times higher than ambient outdoor levels. US EPA’s standards limit the allowable daily average PM2.5 mass concentration at 35 μg/m3. Concentrations inside train cars were 148 ± 51 μg/m3 when traveling through underground tunnels and platforms, and 22 ± 44 μg/m3 while on aboveground tracks. Realtime and gravimetric measurements were made inside train cars along the full length of 9 subway lines, as well as real-time measurements on 341 platforms from 287 stations, all at one-second intervals that the mean (±SD) PM2.5 concentrations on the underground platforms was 216 ± 82 μg/m3 versus 29 ± 27 μg/m3 for aboveground stations. We have carried out a study analyzing the concentrations of particulate matter in the New York City subway system.
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