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Concentration and Characteristics of PCDDs/DFs in Soil at Cheongju City  

Kim, Kyoung-Soo (Division of Environmental, Landscape Architecture & Civil Engineering, Cheongju University)
Kim, Kyeo-Keun (Division of Environmental, Landscape Architecture & Civil Engineering, Cheongju University)
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Abstract
To investigate concentration and characteristics of dioxins in soil at Cheongju city, total 28 soil samples were collected. The total and I-TEQ concentration of 17 PCDDs/DFs ranged from 2.30 to 630.40 pg/g dry weight and from 0.002 to 9.79 pg I-TEQ/g dry weight with averages of 55.42 pg/g and 1.13 pg I-TEQ/g, respectively. These levels are very lower than those of around various incinerators in Korea (from n.d. to 153.23 with average value of 7.36 I-TEQ/g). The correlation between total concentration and TEQ concentration showed significant with 99% confidence interval (p-value < 0.001). The TEQ concentration as land use was high as follows; industrial area> green area> residential and commercial area> farm land. In terms of congener distribution, OCDD which is highly detected in general soil samples, was predominant and showed various fraction (from 23 to 100%). The ratios of PCDF concentration against to PCDD concentration varied as samples (from 0.1 to 2.4).
Keywords
Cheongju City; PCDDs/DFs; Soil;
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Times Cited By KSCI : 2  (Citation Analysis)
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