Since low-floor apartments ate vertically closer to patting lots and roadways, it is hypothesized that residents in low-floor apartments may be exposed to elevated ambient levels of motet vehicle emissions compared to residents in high-floor apartments. The present study examined this hypothesis by ...
Since low-floor apartments ate vertically closer to patting lots and roadways, it is hypothesized that residents in low-floor apartments may be exposed to elevated ambient levels of motet vehicle emissions compared to residents in high-floor apartments. The present study examined this hypothesis by measuring two motor vehicle source-related pollutants(CO and PM10) in ambient air of high-rise apartment buildings within the boundary of industrial complexes according to atmospheric stability The ambient air concentrations of CO and PM10 were higher for low-floor apartments than for high-floor apartments, regardless of atmospheric stability, The median concentration ratio of the low-floor air to high-floor alt ranged from 1.3 to 2.0, depending upon atmospheric stabilities, seasons and compounds. Moreover, the CO and PM10 concentrations were significantly higher in the winter and in the summer, regardless of the Hoot height. Atmospheric stability also was suggested to be important for the residents' exposure of high-rise apartment buildings to both CO and PM10. The median ratios of surface inversion air to non-surface inversion air ranged from 1.2 to 1.7 and from 1.0 to 1.6 lot PM10 and CO, respectively, depending upon seasons. Conclusively, these parameters(apartment floor height, season, and atmospheric stability) should be considered when evaluating the exposure of residents, living in high-rise apartment buildings, to CO and PM10. Meanwhile, the median PMl0 outdoor concentrations were close to or higher than the Korean annual standards for PM10, and the maximum PM10 concentrations substantially exceeded the Korean PM10 standard, thus suggesting the need for a management strategy for ambient PM 10. Neither the median nor the maximum outdoor CO concentrations, however, were higher than the Korean CO standard.
Since low-floor apartments ate vertically closer to patting lots and roadways, it is hypothesized that residents in low-floor apartments may be exposed to elevated ambient levels of motet vehicle emissions compared to residents in high-floor apartments. The present study examined this hypothesis by measuring two motor vehicle source-related pollutants(CO and PM10) in ambient air of high-rise apartment buildings within the boundary of industrial complexes according to atmospheric stability The ambient air concentrations of CO and PM10 were higher for low-floor apartments than for high-floor apartments, regardless of atmospheric stability, The median concentration ratio of the low-floor air to high-floor alt ranged from 1.3 to 2.0, depending upon atmospheric stabilities, seasons and compounds. Moreover, the CO and PM10 concentrations were significantly higher in the winter and in the summer, regardless of the Hoot height. Atmospheric stability also was suggested to be important for the residents' exposure of high-rise apartment buildings to both CO and PM10. The median ratios of surface inversion air to non-surface inversion air ranged from 1.2 to 1.7 and from 1.0 to 1.6 lot PM10 and CO, respectively, depending upon seasons. Conclusively, these parameters(apartment floor height, season, and atmospheric stability) should be considered when evaluating the exposure of residents, living in high-rise apartment buildings, to CO and PM10. Meanwhile, the median PMl0 outdoor concentrations were close to or higher than the Korean annual standards for PM10, and the maximum PM10 concentrations substantially exceeded the Korean PM10 standard, thus suggesting the need for a management strategy for ambient PM 10. Neither the median nor the maximum outdoor CO concentrations, however, were higher than the Korean CO standard.
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제안 방법
Surface inversion is typi cally defined as the period when the temperature at the surface increases with height. As such, this study defined a surface-inversion period as when the average temperature measured during each sampling period was higher for the high floor than for the low floor. Regardless of the atmospheric stability, the ambient concentrations of CO and PM10 were significantly higher for the low floors than for the high floors in both winter and summer.
and 7:00 pm, when surface in version can potentially occur. If there was any sample loss due to sampling or analytical problems, all sam ples for that sampling day were discarded and the wh이e experimental procedure was re-conducted on an other sampling day. Ambient air temperatures were measured concurrently prior to and right after the measurements of CO and PM10 concentrations, using thenno recorders with a res이ution of 0.
The current study evaluated the hypothesis that resi dents in low-floor 叩artments may be exposed to ele vated ambient levels of motor vehicle emissions com pared to residents in high-floor apartments. This was established based on measuring two motor vehicle source-related pollutants (CO and PM 10) in ambient air of high-rise apartment buildings within the boun dary of industrial complexes. This study found that the ambient air concentrations of CO and PM10 were higher for low-floor apartments than for high-floor apartments, regardless of atmospheric stability.
데이터처리
The data were compared using a paired t-test or a non- parametric test (Wilcoxon Rank-Sum Test). Median values were used to characterize the log-normally dis tributed data, 、when this was indicated by the Shapiro-Wilk statistical test. The criterion for sig nificance in the procedures was p<0.
A statistical test of nor- mality(Shapiro-Wilk statistics) showed that the data were log-normally distributed. Paired sample means of low-floor and high-floor apartments were analyzed us ing a paired t-test. The present study classified the at mospheric stability into two cases: presence and ab sence of surface inversion.
Using the SAS program (Version 8) on a personal computer, the Shapiro-Wilk statistical test was em ployed to evaluate the normality of the data. The data were compared using a paired t-test or a non- parametric test (Wilcoxon Rank-Sum Test). Median values were used to characterize the log-normally dis tributed data, 、when this was indicated by the Shapiro-Wilk statistical test.
Using the SAS program (Version 8) on a personal computer, the Shapiro-Wilk statistical test was em ployed to evaluate the normality of the data. The data were compared using a paired t-test or a non- parametric test (Wilcoxon Rank-Sum Test).
성능/효과
This was established based on measuring two motor vehicle source-related pollutants (CO and PM 10) in ambient air of high-rise apartment buildings within the boun dary of industrial complexes. This study found that the ambient air concentrations of CO and PM10 were higher for low-floor apartments than for high-floor apartments, regardless of atmospheric stability. Moreover, the CO and PM10 concentrations were significantly higher in the winter and in the summer, regardless of the floor height.
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