Heavy Metal (Zn, Cu, Cd, Pb) Distribution and its Form of the Sludges on Keumho River and Her Branches

금호강(琴湖江) 및 그 지류(支流)의 하상(河床) 퇴적오니중(堆積汚泥中) 중금속(重金屬) ( Zn, Cu, Cd, Pb) 분포(分布)와 그 형태(形態)

  • Lee, Jyung-Jae (Department of Agricultural Chemistry, College of Agriculture, Kyungpook National University) ;
  • Choi, Jyung (Department of Agricultural Chemistry, College of Agriculture, Kyungpook National University)
  • 이정재 (경북대학교 농과대학 농화학과) ;
  • 최정 (경북대학교 농과대학 농화학과)
  • Published : 1986.06.30

Abstract

This study was carried out to determine the heavy metal contents in sluges of Keumho river and her branches. The heavy metal contents of sludge are the highest in Sincheon, Kongdancheon and Dalseocheon among the branches. The large part of heavy metal exists in $0{\sim}5cm$ from sludge surface. The sequential extraction with various reagents showed that the residual and organically bound fraction were the most abundant pool. Decomposition of organic matter caused sludge to release heavy metals. On the extraction of sludge with various solution having different pH, it was found that the lower the pH, the more heavy metal was extracted. However, considerable amount of heavy metal was not extracted even with pH 3 solution.

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