The distribution characteristics of trace elements of fine ambient particulate in Korea

  • Lim, Jong-Myoung (Chungnam National University, Department of Environmental Engineering) ;
  • Lee, Jin-Hong (Chungnam National University, Department of Environmental Engineering) ;
  • Kim, Ki-Hyun (Sejong University, Geoinformation Sciences)
  • Received : 2005.03.18
  • Accepted : 2005.05.19
  • Published : 2005.06.25

Abstract

In this study, instrumental neutron activation analysis was used to measure the concentrations of about 30 trace elements in airborne particulate (PM2.5) samples at urban area of Daejeon city located in the southwestern region of Korea. An inspection of the measurement data indicates that the distribution patterns of trace elements could clearly distinguish the elements with their concentrations ranging over five orders of magnitude. The mean values for Lu and Dy were found to be the lowest at values of 0.01 and $0.04ng/m^3$, while those for K and Fe showed the highest value of 671 and $653ng/m^3$, respectively. The results of correlation analysis showed that PM2.5 concentrations can exhibit much more enhanced correlations with the elements of earth crustal components. The results of factor analysis further indicated that there are no more than six factors with statistical significance, which may exert dominant roles in regulating the elemental concentration levels in the study area. Enrichment factor analysis supports explicit interpretation of results found by this factor analysis.

Keywords

instrumental neutron activation analysis;air pollution;PM2.5;factor analysis;enrichment factor analysis

Acknowledgement

Supported by : Ministry of Science and Technology

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