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Investigation on Geochemical Characteristics of Heavy Metals in Soils in the Vicinity of Samcheonpo and Hadong Coal-Fired Power Plants in Korea
국내 삼천포와 하동 석탄 화력발전소 주변 토양 내 중금속의 지구화학적 특성 조사
Econ. Environ. Geol. 2019 Apr;52(2):141-58
Published online April 30, 2019;  https://doi.org/10.9719/EEG.2019.52.2.141
Copyright © 2019 the Korean society of economic and environmental gelology.

Chang-Woo Song, Hyeop-Jo Han and Jong-Un Lee*
송창우 · 한협조 · 이종운*

Department of Energy and Resources Engineering, Chonnam National University, Gwangju, Korea
전남대학교 에너지자원공학과
Received March 27, 2019; Revised April 24, 2019; Accepted April 24, 2019.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
The quantity of heavy metals in agricultural surface and subsurface soils around coal-fired power plants located in Samcheonpo and Hadong, Gyeongnam Province, were determined. The analytical results for 48 and 61 soils in Samcheonpo and Hadong, respectively, showed that the concentrations of Cu, Hg, Ni, Pb, and Zn were below the warning criteria regulated by Korean Soil Conservation Act; however, Cd in 38 and 13 soils in Samcheonpo and Hadong, respectively, exceeded the criterion. As a result of calculation of the geoaccumulation index and the enrichment factor, the soils were extremely contaminated with Cd and such high loading of Cd to the soils was due to anthropogenic source(s). Sequential extraction of the soils, however, showed that heavy metals including Cd existed as hardly extractable phases, which represented a low bioavailability of the heavy metals. Our results indicated that Cd contamination around the coal-fired power plants was due to artificial source(s) and may unlikely deteriorate nearby ecosystems.
Keywords : coal-fired power plant, heavy metals, soil, cadmium, sequential extraction

 

June 2019, 52 (3)