석담광산 주변 토양오염 및 생물농축 특성 연구

초록

This study evaluated the transfer characteristics and potential exposure of heavy metals among environmental media by comprehensively analyzing soil, water, rice, and human biomarkers in agricultural areas affected by the Seokdam mine located in Seomyeon, Hongcheon, Korea. In soils, relatively high concentrations of As (8.8-19.5 mg/kg), Cd (0.1-1.2 mg/kg), and Zn (62.2-134.0 mg/kg) were observed at specific sites, while water samples showed localized contamination with maximum concentrations of As (3.62 ㎍/L) and Zn (382.93 ㎍/L). In rice, Cd concentrations averaged 0.11 mg/kg (maximum 0.52 mg/kg), exceeding the standard in some samples, and bioconcentration factors were relatively high for Cd (0.215) and Zn (0.166). Correlation analyses between soil and rice, as well as rice and human biomarkers, showed generally weak relationships, indicating multi-pathway exposure characteristics. These results suggest that the transfer and exposure of heavy metals in abandoned mine areas can occur through a continuous pathway linking water, soil, crops, and humans.

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