Journal of Environmental Analysis, Health and Toxicology (환경분석과 독성보건)

The Korea Society for Environmental Analysis (한국환경분석학회)
권호 표지

Source Identification and Trends in Atmospheric Particulate-bound Mercury at Seoul and Baengnyeong, South Korea

서울과 백령도의 대기 중 입자상 수은의 분포 특성 및 발생원 추정연구

  • Noh, Seam (Division of Chemical Research, National Institute of Environmental Research) ;
  • Park, Kwang-Su (Division of Chemical Research, National Institute of Environmental Research) ;
  • Kim, Hyuk (Division of Chemical Research, National Institute of Environmental Research) ;
  • Yu, Seok-Min (Division of Chemical Research, National Institute of Environmental Research) ;
  • Lim, Yong-Jae (Division of Air Quality, National Institute of Environmental Research) ;
  • Lee, Min-Do (Division of Air Quality, National Institute of Environmental Research) ;
  • Seok, Kwang-Seol (Division of Chemical Research, National Institute of Environmental Research) ;
  • Kim, Younghee (Division of Chemical Research, National Institute of Environmental Research)
  • 노샘 (국립환경과학원 화학물질연구과) ;
  • 박광수 (국립환경과학원 화학물질연구과) ;
  • 김혁 (국립환경과학원 화학물질연구과) ;
  • 유석민 (국립환경과학원 화학물질연구과) ;
  • 임용재 (국립환경과학원 대기환경연구과) ;
  • 이민도 (국립환경과학원 대기환경연구과) ;
  • 석광설 (국립환경과학원 화학물질연구과) ;
  • 김영희 (국립환경과학원 화학물질연구과)
  • Received : 2018.10.17
  • Accepted : 2018.11.13
  • Published : 2018.12.31
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Abstract

$PM_{2.5}$-bound mercury (PBM) was monitored at weekly intervals for three years (from 2014 to 2016) at an urban (Seoul) and rural site (Baengnyeong) in South Korea. The average PBM concentrations in $PM_{2.5}$ samples over the entire sampling period were $12{\pm}11pg/m^3$ and $36{\pm}34pg/m^3$ for Baengnyeong and Seoul, respectively. Seasonal differences were pronounced, with concentrations being highest in winter due to local meteorological conditions (high gas-particle coefficient due to low temperature and low mixing layer height in winter) as well as seasonal factors, such as coal combustion for heating purposes in China. In Baengnyeong, the significant positive correlation of PBM with $PM_{2.5}$, air pollutants, and heavy metals suggested that coal combustion in China might be the most important source of ambient mercury in Korea. In winter, no correlation of PBM with $PM_{2.5}$, air pollutants, and heavy metals was seen in Seoul. Furthermore, Seoul showed higher $PBM/PM_{2.5}$ and $Pb/PM_{2.5}$ ratios in winter due to the strong atmospheric oxidation-reduction reaction conditions as well as local and regional PBM sources. We conclude that immediate attention must be given to addressing PBM levels in Korea, including considering it as a key component of future air quality monitoring activities and mitigation measures.

Keywords

Acknowledgement

Supported by : 국립환경과학원

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