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Journal of Environmental Toxicology 2007;22(2):129-135.
토양깊이 및 토지이용에 따른 다핵방향족탄화수소 (PAHs)의 토양 중 분포
남재작, 홍석영, 이종식, 소규호, 이상학
Polycyclic Aromatic Hydrocarbons (PAHs) in Korean Soil: Distribution by Depth and Land Use
Jae-Jak Nam , Suk-Young Hong , Jong-Sik Lee , Kyu-Ho So , Sang-Hak Lee
ABSTRACT
  Polycyclic aromatic hydrocarbons (PAHs) have been analyzed to assess vertical distribution of them with different land uses. The soils were collected from three layers; surface (0~5 ㎝), intermediate (6~10 ㎝), and deep (11~15 ㎝) layer, respectively considering land use; paddy, upland, and mountain in each site. Total 89 samples of soil from 10 sites were analyzed. Overall mean of ∑PAHs were 137 (range 8.87~625 ㎍ ㎏?¹), 203 (range 16.5~645 ㎍ ㎏?¹), and 83.4 ㎍ ㎏?¹ (range 6.65~667 ㎍ ㎏?¹) for paddy, upland, and mountain soil, respectively. The dominant PAHs were fluoroanthene/benzo(b)fluoroanthene>pyrene>indeno(1, 2, 3-cd)pyrene in paddy, fluoroanthene/pyrene>benzo(b)fluoroanthene>chrysene in upland, and benzo(b)fluoroanthene >pyrene>chrysene in mountain soil, whereas the profile was quite similar for each other except that indeno(1, 2, 3-cd)pyrene and benzo(ghi)perylene are relatively higher in the paddy soils. Although the concentration gradient by depth was not observed in the paddy and upland soils because perturbation of soil layer by tillage, significant decrease was in the deep layer relative to the surface and intermediate layer. However, the concentration gradient of PAHs by soil depth was clearly shown in mountain soil without experiencing disturbance of tillage.
Keywords: PAHs; distribution; soil depth; land use
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