- Correlation Estimation between Geochemical Metal-fraction and Soil Properties in Agricultural and Industrial Soils
- Lee, Hong-gil;Kim, Ji-in;Noh, Hoe-Jung;Park, Jeong-Eui;Kim, Tae Seung;Yoon, Jeong Ki;
- Soil and Groundwater Research Division, National Institute of Environmental Research;Soil and Groundwater Research Division, National Institute of Environmental Research;Soil and Groundwater Research Division, National Institute of Environmental Research;Chemical R&D Center, PDT Co., Ltd;Soil and Groundwater Research Division, National Institute of Environmental Research;Soil and Groundwater Research Division, National Institute of Environmental Research;
- 농경지 및 공장지역 토양 내 중금속 존재형태와 토양 특성과의 상관성 평가
- 이홍길;김지인;노회정;박정의;김태승;윤정기;
- 국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;(주)피디티 케미컬 R&D 센터;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;
Abstract
The Standards, Measurement and Testing Programme (SM&T-formerly BCR) extraction procedure was applied to fractionate Cr, Cu, Ni, Pb and Zn in 23 top soil samples into: (i) exchangeable phase; (ii) reducible phase; (iii) oxidisable(sulfides and organics bound) phase; and (iv) residual phase. Fractions of Cr and Ni were in the order of residual > oxidisable > reducible > exchangeable phase. The oxidisable phase was identified as dominant for Cu and Pb. Zn had the highest ratio of exchangeable phase in comparision to the other metals. The bioavailability and mobility were assessed to be the greatest for Zn, followed by a decreasing order of Pb, Cu, Ni and Cr. All metal average concentrations in topsoil samples was higher in industrial sites than in agricultural sites. Our results revealed higher concentrations in topsoil samples (0~15 cm) than in sub soils (15~30 cm, 30~60 cm) for most metals at six sites (No. 5, 6, 17, 19, 20, 23). The fractions of exchangeable, reducible ad oxidisable phases showed relatively high correlation with soil pH, Fe/Mn oxide concentrations and organic matter contents, respectively.
Keywords: SM&T extraction procedure;Land use;Soil characteristics;Metals;
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