대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제31권5호
  • /
  • Pages.346-351
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  • 2009
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지

청주시 토양 중 다이옥신 농도 및 특성

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

  • 김경수 (청주대학교 환경조경토목공학부) ;
  • 김교근 (청주대학교 환경조경토목공학부)
  • Kim, Kyoung-Soo (Division of Environmental, Landscape Architecture & Civil Engineering, Cheongju University) ;
  • Kim, Kyeo-Keun (Division of Environmental, Landscape Architecture & Civil Engineering, Cheongju University)
  • 발행 : 2009.05.30
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초록

청주시 토양을 대상으로 다이옥신의 오염수준 및 특성에 대해 조사하였다. 채취된 28개 지점의 토양 중 17개 다이옥신 이성질체의 농도범위는 2.30${\sim}$630.40(평균 55.42) pg/g-dry으로 검출되었으며 TEQ 농도범위는 0.002${\sim}$9.79(평균 1.13) pg I-TEQ/g-dry로 조사되었다. 이들 농도는 우리나라 소각시설 주변의 농도(불검출${\sim}$153.23, 평균 7.36 pg I-TEQ/g-dry)보다 매우 낮은 수준을 나타내었다. 총농도와 TEQ 농도와는 99% 신뢰구간에서 서로 상관성을 나타냈다(p값<0.001). 토지이용별 농도는 공단>녹지>주거 및 상업지>농경지의 순으로 높게 나타났다. 이성질체 조성에 있어서는 일반적으로 토양 중에서 높게 검출되는 OCDD의 비율이 22${\sim}$100%(평균 59%)로 채취지점에 따라 편차가 심하였으며, PCDF/PCDD의 비율 또한 0.1${\sim}$2.4(평균 0.8)로 지점에 따라 편차를 보였다.

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).

키워드

참고문헌

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