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Concentrations of SPM and Ambient Hazardous Heavy Metals in an Industrial Complex Area in Daegu City

대구시 산단지역 대기 중 SPM과 유해중금속성분의 농도

  • Received : 2015.07.15
  • Accepted : 2015.08.13
  • Published : 2015.08.28

Abstract

Objectives: This study evaluated the regional and seasonal concentrations of ambient hazardous heavy metals in an industrial complex area in Daegu City. Methods: A total of 64 SPM (Suspended Particulate Matter) samples were collected in non-industrial and industrial areas during 2014 and were analyzed for hazardous heavy metals elements (As, Cd, Mn, Ni, Pb) with ICP after acid extraction. Results: SPM and hazardous heavy metals concentrations showed regional (industrial complex area>non-industrial complex area) and seasonal (spring, winter>fall, summer) variations. All of the hazardous heavy metals were influenced by anthropogenic sources. The pollution index of hazardous heavy metals was very low, showing roughly one-quarter of the level of the air quality guidelines of WHO. The correlation analysis among SPM and hazardous heavy metals indicated that components of non-industrial complex areas were more related to each other than those of industrial complex areas, and the correlation in the winter was higher than in other seasons. Conclusion: It is necessary to control air pollution sources and establish related policy because hazardous heavy metals from industrial areas can influence residential areas.

Keywords

Correlation analysis;Heavy metals;Industrial complex;Pollution index;SPM

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Acknowledgement

Grant : 환경분야 시험검사의 국제적 적합성 기반구축

Supported by : 환경부