RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Accumulation of heavy metals in surface sediments of Lere Lake, Chad

        Léopold Nga Ekengele,Apelbo Blaise,정명채 한국지질과학협의회 2017 Geosciences Journal Vol.21 No.2

        Thirty surface sediment samples collected from Lere Lake were analyzed for As, Co, Cr, Cd, Cu, Ni, Pb, Sb, Sn, Zn, Fe, pH, Electrical Conductivity (EC) and Organic Matter (OM) in order to assess the current pollution status in sediments of the study area. Sediment pollution assessment was carried out using Enrichment Factor (EF) and Geo-accumulation index (Igeo). The potential ecotoxic effects were evaluated based on sediment quality guidelines. The calculated enrichment factor showed that the sediment was mostly enriched with Sb, Cd, Cu, and Cr. The results of the geo-accumulation index indicated that sediments were unpolluted with Sn, Co, Pb; moderately polluted with As, Cr, Cd, Cu, Ni, Zn, and strongly polluted with Sb. This pollution was attributed to anthropogenic activities caused by the sloping side of Lere Lake including consisting of mainly waste disposal, chemicals used in agriculture, and gold exploitation. Sites that exceeded TEL for Cr and Ni and PEL for Cr are ranked at the highest priority level in terms of potential ecological risk.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼