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논문검색

자연습지 우포늪 퇴적물의 연도별 잔류성 중금속 축적도

원문정보

Vertical Distribution of Persistent Heavy metals in Core Sediments from Upo Wetland

이찬원, 부민호, 전홍표, 임경원, 김기호

피인용수 : 0(자료제공 : 네이버학술정보)

초록

영어

Sediment cores were obtained from Upo and Mokpo in Upo Wetland and core samples were divided by depth into 20 ~ 21 subsamples. The heavy metal concentrations of Fe, Mn, Zn, AS, Cu, Cd, Ni, Pb, and Cr in the sediments of each depth were determined by ICP-MS. The texture of sediemnts from Upo Wetland appeared to be clayey silt with average grain size of 7.52 ~ 11.15 ㎛ for physical properties. It was found to have a clear tendency of depth profile with respect to TOC and ignition loss. Organics were stabilized in the range of 0.5 ~ 0.7 % TOC and 8 ~ 9 % ignition loss in 30 years, whereas, the surficial sediments have the highest concentrations of about 3.0 % of TOC and 13 ~ 15 % ignition loss. Those are much higher than the values of the main stream, the Nakdong River, which reflects the deposit of biodegradable organics from plants and other lifes. The vertical distribution of heavy metals in two sediment cores was investigated to elucidate historical trends of heavy metals deposited into Upo wetland. The depth profile concentrations of each heavy metal were compared and discussed with the Concensus-Based Sediment Quality Guidelines for freshwater ecosystems. All the Cd data for the vertical distribution in the sediments were detected above PEC value for Cd, which predict harmful effects on sediment-dwelling organisms expected to occur frequently. The concentrations of Zn, Cu, and Cr in all sediment samples for depth profile were detected below the TEC values, which provided a basis predicting the absence of toxicity by Zn, Cu, and Cr.

목차

Abstract
 1. 서 론
 2. 재료 및 실험방법
  2.1 시료채취
  2.2 퇴적물의 물리화학적 특성분석
  2.3 우포 퇴적물의 중금속 분석
 3. 결과 및 고찰
  3.1 퇴적물의 물리화학적 특성
  3.2 우포늪 중금속 분석결과
 4. 결 론
 감사의 글
 참 고 문 헌

저자정보

  • 이찬원 Chan Won Lee. 경남대학교 환경공학과 교수․공학박사
  • 부민호 Min Ho Boo. 경남대학교 환경공학과 대학원․박사수료
  • 전홍표 Hong Pyo Jeon. 경남대학교 환경공학과 대학원․박사수료
  • 임경원 Kyung Won Lim. 경남대학교 환경공학과 대학원․석사
  • 김기호 Ki Ho Kim. 경남대학교 화학과 대학원․박사수료

참고문헌

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