하천유역의 관속식물에 의한 중금속의 생물학적농축 및 중금속 오염도 평가에 관한 연구 : I. 수생관속식물인 마름(Trapa japonica)의 중금속 Pb, Cu, Zn 및 Fe의 생물학적 농축 및 토양과 수질 내의 중금속 함량과의 관계 The biological magnification of Pb, Cu, Zn and Fe in water chestnut, Trapa japonica and relationship to metal contents in the adjacent river soil or water column = STUDIES ON THE BIOLOGICAL MAGNIFICATION OF HEAVY METAL AND THE ASSAY OF HEAVY METAL POLLUTION LEVELS IN THE AREA OF RIVER BY VASCULAR PLANTS

다국어 초록 (Multilingual Abstract)

The biological magnification of Pb, Cu, Zn and Fe from soil or water column in water chestnut, Trapa japonica and relationship between the concentration of Pb, Cu, Zn and Fe in Trapa japonica and in adjacent soil or water column were investigated in the Chonju river, Chonju city and suburb's river.
At each of 5 sampling sites, 5 Trapa japonica individuals, water and soil were collected in every week during 4 months, separated into leaf, stem and root portions, stored in a deep freezer at -70℃ and analysed for total Pb, Cu, Zn and Fe by Trace Element Analyser 3000. The amounts of biological magnification of heavy metal in Trapa japonica were Pb(213.9㎍/g), Cu(618.1㎍/g), Zn(2346.7㎍/g) and Fe(6078.5㎍/g). The concentration of Pb, Cu, Zn and Fe in the leaf, stem and root of Trapa japonica was founded that concentration in leaf and stem was increased in the sequence Pb<Cu<Fe<Zn and in root was increased in the sequence Pb<Cu<Zn<Fe.
The amount of biological magnification in the leaf, stem and root of Trapa japonica was generally increased in the sequence leaf<stem<root.
Statistical Analysis suggested that the significant portion of Pb, Cu or Zn Content in Trapa japonica was derived from soil. The concentration of Pb, Cu and Zn in Trapa japonica relatively indicates the heavy metal content of soil in river area.