지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Risk based pollution level of Pb and Cd in metal contaminated soils depending on physicochemical properties of soil in a target site was assessed using biotic ligand model. Heavy metal activity in soil solution defined as exposure activity (EA) was assumed to be toxic to Vibrio fischeri and soil organisms. Predicted effective activity (PEA) determined by biotic ligand model was compared to EA value to calculate risk quotient. Field contaminated soils (n = 10) were collected from a formes area and their risk based pollution levels were assessed in the present study using the calculated risk quotient. Concentrations of Pb determined by aqua regia were 295, 258, and 268 mg/kg in B, H and J points and concentrations of Cd were 4.73 and 6.36 mg/kg in G and I points, respectively. These points exceeded the current soil conservation standards. However, risk based pollution levels of the ten points were not able to be calculated because concentrations of Pb and Cd in soil solution were smaller than detection limits or one (i.e., non toxic). It was because heavy metal activity in soil solution was dominant toxicological form to organisms, not a total heavy metal concentration in soil. In addition, heavy metal toxicity was decreased by competition effect of major cations and formation of complex with dissolved organic carbon in soil solution. Therefore, it is essential to consider site-specific factors affecting bioavailability and toxicity for estimating reliable risk of Pb and Cd.
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참고문헌 (23)
참고문헌 신청
Alloway, B.J. / 1990 / Heavy metals in soil / John Wiley & Sons, Inc :100~124
An, J. / 2010 / Development of terrestrial biotic ligand models to predict the toxicity of Cd and Pb in soil / SETAC North America 31th annual meeting :7~11
Di toro, D.M. / 2001 / Biotic ligand model of the acute toxicity of metals / Technical basis, Environ. Toxicol. Chem 20:2383~2396
Gustafsson, J.P. / WinhumicV
Haanstra, L. / 1984 / Glutamic acid decomposition as a sensitive measure of heavy metal pollution in soil / Soil Biol. Biochem 16:595~600
An, J. / 2010 / Development of terrestrial biotic ligand models to predict the toxicity of Cd and Pb in soil / SETAC North America 31th annual meeting :7~11
Di toro, D.M. / 2001 / Biotic ligand model of the acute toxicity of metals / Technical basis, Environ. Toxicol. Chem 20:2383~2396
Gustafsson, J.P. / WinhumicV
Haanstra, L. / 1984 / Glutamic acid decomposition as a sensitive measure of heavy metal pollution in soil / Soil Biol. Biochem 16:595~600
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