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Distribution Characteristics of Dioxins in Soils under Different Land Use in Busan, Korea
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 Title & Authors
Distribution Characteristics of Dioxins in Soils under Different Land Use in Busan, Korea
Jeong, Tae-Uk; Seo, Dong-Cheol; Jeong, Seung-Ryul; Cho, Jeong-Gu; Yoo, Pyung-Jong; Kim, Gi-Gon; Cho, Ju-Sik; Heo, Jong-Soo;
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In this study, distribution characteristics of dioxins in soils in Busan, Korea were investigated regarding different land use types. Soil sampling sites that distributed through the Busan city showed dioxin concentration ranging from 0.489 to dry weight with a mean value of dry weight. The mean dioxin concentrations of investigated soils ranged from 1.554 to dry weight in consideration of each land use type. That in metal refinery sites with dry weight was higher than any other sites, followed by waste incinerator sites with dry weight. The majority of soil samples had the same dioxin congener profiling despite the different range of dioxin concentration. Octa-CDD was the major contributor among seventeen dioxin congeners with the range from 29.5 to 70.1% in real values. In contrast to real values, dioxin congener profiles in TEQ values were dominated by 2,3,4,7,8-PeCDF which contributed about 35.3~43.8% to the total dioxin concentrations. It was judged by these results that penta-CDF was the major contributor of soil samples in Busan city. The mean ratio of PCDFs/PCDDs in real values was about 0.71, but that in TEQ values was, in contrast to it, approximately 3.03.
Dioxin;Soil;Contribution rate;
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