International Journal of Advanced Culture Technology

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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Distribution Characteristics of Dust and Heavy Metals in the Atmosphere Around the Steel Industrial Complex

  • Hye-jin Jo (Dept. of Env.Eng., Hanseo University) ;
  • Jong-Ho Kim (Dept. of Env. Eng., Hanseo University) ;
  • Byung-Hyun Shon (Dept. of Env. Eng., Hanseo University)
  • Received : 2024.03.02
  • Accepted : 2024.05.01
  • Published : 2024.06.30
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Abstract

In Dangjin, Chungcheongnam-do, there are not only power plants and large steel complexes, but also small and medium-sized air pollutant emission facilities. The dust generated by these facilities has a very small particle size and a large surface area due to condensation and physical and chemical reactions, and is discharged containing various harmful substances. Therefore, this study analyzed the distribution of particulate matter and heavy metal concentrations by particle size in the vicinity of the steel complex, residential area, and reference point using an eight-stage Cascade Impactor. Overall, the direct impact sites with a short distance from the steel complex had the highest concentration, followed by the indirect impact sites, and the non-impact sites had the lowest concentration, indicating that they are directly affected by the steel complex. The atmospheric dust concentration distribution showed a bimodal distribution with a minimum value around the 1.1 to 2.1 ㎛ particle diameter. However, during the yellow dust event, the maximum concentration was biased toward coarse particles. The proportion of PM2.5 in the dust tended to be higher in winter, while the ratio between PM2.5 and PM10 was relatively higher in spring. Regardless of the location of the impact point, heavy metals in the dust were dominated by iron and aluminum, followed by zinc, lead, and manganese.

Keywords

Acknowledgement

This study was supported by the Korea Environmental Industry & Technology Institute (KEITI) (grant Graduate School of Fine Particle Management Specialization)

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