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소나무잎과 토양에 침착된 PCDD/Fs 특성

Characteristics of PCDD/Fs Deposited on Pine Needles and Soil

천만영|여현구
한국환경농학회 (The Korean Society Of Environmental Agriculture)|2005.09|한국환경농학회지 (Agricultural and Environmental Sciences)|제24권 제3호|pp. 280-288

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참고문헌

주제분류농학

초록

대기중 PCDD/Fs가 소나무잎과 토양에 침착되는 특징에 대하여 연구하였다.1)토양과 소나무잎에 침착된 PCDD/Fs는 토양중 농도가 소나무잎중 농도보다 ∑PCDDs는 7.4배, ∑PCDFs는 2.3배, 그리고 ∑PCDD/Fs는 5.4배 더 높았다.2)토양/소나무잎 농도비를 homologue 별로 비교한 결과 PCDD/Fs homologue의 LogKoa 값의 크기 변화와 동일한 경향을 보였다.3)각 congener의 ∑PCDD/Fs 농도에 대한 농도 분율은 염소치환수가 적은 경우(tetra-에서 hexa-까지)에는 소나무잎에서 높고, 염소치환수가 많은 경우(hepta-와 octa-)에는 토양에서 더 높았다.4)소나무잎에는 염소치환수가 적은 PCDD/Fs homologue가, 토양에는 염소치환수가 많은 PCDD/Fs homologue가 주로 누적침착되었다.

Abstract

The aim of this study was to investigate deposition characteristics of atmospheric PCDD/Fs on pine needles and soil. Concentration of PCDD/Fs on soil were higher than those in pine needles, being 7.4 times for ∑PCDDs, 2.3 times for ∑PCDFs, and 5.4 times for ∑PCDD/Fs respectively. The ratios of the concentration of each homologue in soil to that in pine needles increased as the number of chlorine atoms increased. The concentration (%) of each congener to ∑PCDD/Fs was higher in the one with a small number of chlorine atoms substituted, such as tetra- to hexa-homologues in pine needle samples and in one with a large number of chlorine atoms, such as hepta- to octa-homologues in soil samples. Lower-chlorinated homologues of PCDD/Fs were mainly accumulative deposited in pine needles, whereas higher-chlorinated ones were on soil.

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