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J Korean Soc Environ Eng > Volume 41(6); 2019 > Article
J Korean Soc Environ Eng 2019;41(6): 346-355. doi: https://doi.org/10.4491/KSEE.2019.41.6.346
우리나라 토양수은 농도의 장기적 추세 및 공간적 분포 특성에 대한 고찰
김평래1, 김대영2, 한영지3
1국립산림과학원 산림보전연구부 도시숲연구센터
2강원대학교 환경학과
3강원대학교 농업생명과학대학 환경융합학부
A Review for the Long-Term Trend and Spatial Distribution of Soil Mercury Concentration in South Korea
Pyung-Rae Kim1, Dae-Young Kim2, Young-Ji Han3
1Urban forests research center, Forest conservation department, National Institute for Forest Science
2Department of Environmental Science, Kangwon National University
3Department of Environmental Science, College of Agricultural Life Science, Kangwon National Univeristy
Corresponding author  Young-Ji Han ,Tel: 033-250-8579, Fax: 033-259-5563, Email: youngji@kangwon.ac.kr
Received: January 24, 2019;  Revised: March 21, 2019;  Accepted: March 27, 2019.  Published online: June 30, 2019.
Soil mercury (Hg) concentrations have been measured in soil monitoring network and soil pollution investigation in Korea since 1997; however, extensive data analysis has not been conducted to identify the long-term trends and/or spatial distributions. This study shows the long-term and spatial trends of soil Hg by land use and by depth as well as the yearly averaged concentrations. Hg concentration found in some of industrial, railroad-related, mining, and waste treatment areas exceeded the soil quality standard for Region 1, but not for Region 3. Hg in topsoil showed higher concentration than in deep soil when there was a clear ground pollution source while the Hg in deep soil was higher than that in topsoil for groundwater pollution area. The soil Hg did not show similar spatial distribution every year, but the Hg near the Seokpo smelter has been steadily high. The number of samples having the soil Hg below the detection limit was more than 50% of the total, and the frequency of non-detectable samples was significantly different for each local government. Therefore, the analytical method and the relevant strict guidelines for quality assurance and quality control should be provided to all measurement institutions.
Key Words: Mercury, Soil Monitoring Network, Soil Pollution Investigation, Long-term Trend, Spatial Distribution
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