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- W1524060554 abstract "Abstract In this study, a total of 21 elements were determined from PM2.5 and PM10 samples collected at one subway station using INAA and XRF. In order to assess the pollution status and distribution characteristics in a subway station, the absolute concentration levels, concentration ratios, and crustal enrichment factors of these elements were analyzed. PM2.5 concentrations in the subway station varied in the range of 24.8 to 72.6 μg m −3 (average ± standard deviation: 42.6 ± 10.6 μg m −3 ), while those of PM10 from 38.0 to 101 μg m −3 (67.2 ± 15.5 μg m −3 ). The relative contribution of elemental components in each particle fraction accounted for about 42 and 44%, respectively. Out of all metals, Fe was predominant to represent about 29 and 27% of each particle fraction. In contrast, the crustal sources were estimated to contribute to about 3.7 and 2.3% of the total Fe concentrations, respectively. Thus, one can conclude that considerable quantities of airborne Fe particles originated mainly from subway sources, probably due to the wearing of the steel products like wheel, rail, brake, etc." @default.
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- W1524060554 date "2011-09-01" @default.
- W1524060554 modified "2023-10-16" @default.
- W1524060554 title "Characteristics of the elemental compositions of particulate matter at a subway platform using INAA and XRF" @default.
- W1524060554 doi "https://doi.org/10.1524/rcpr.2011.0054" @default.
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