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http://dx.doi.org/10.4491/KSEE.2016.38.8.459

PM10 and Associated Trace Elements in the Subway Cabin of Daejeon by Instrumental Neutron Activation Analysis  

Jeong, Jin Hee (Department of Environmental Engineering, Chungnam National University)
Lim, Jong Myoung (Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute)
Lee, Jin-Hong (Department of Environmental Engineering, Chungnam National University)
Publication Information
Abstract
In order to assess the pollution status and distribution characteristics of PM and PM-bound species, PM10 samples were collected using mini-volume air sampler at the subway cabin in Daejeon city. Measurements of about 24 elements including toxic metals (e.g., As, Cr, Mn, V, Zn) in PM10 were made by instrumental neutron activation analysis and X-ray fluorescence. The average PM10 concentration was $59.3{\pm}14.5{\mu}g/m^3$ in the subway cabin with a range of 42.2 to $97.4{\mu}g/m^3$, while the associated elemental concentrations were varied in the range of $10^{-3}$ to $10^5ng/m^3$. It was found that the concentration of Fe ($12.5{\mu}g/m^3$) was substantially higher than any other element. The Fe concentration was apportioned by about 20% of the PM10 concentration. The results of factor analysis indicate that there are no more than six sources in the cabin (e.g., brake-nonferrous metal particle, resuspended rail dust, fuel combustion, vehicle exhaust, black carbon, Cr-related).
Keywords
PM10; Trace Elements; Subway Cabin; Indoor Air Quality; Instrumental Neutron Activation Analysis;
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