In order to certificate the distribution and pollution of heavy metal of surface sediments in Nakdong River were collected and analyzed for grain size, water content, ignition loss and heavy metal content. Surface sediments mainly composed of sand(avg. 94.6%) and water content and ignition loss were 20.46%, 1.53% on average. Grain size were relatively fine and organic matter content were relatively high in the Hoichun and Sunakdonggang. Most of heavy metal content(Zn > Cr > Pb > Ni > Cu > Hg) in the Deokcheongang and Sunakdonggang were higher than the other streams. The Igeo were non polluted(less than 0) in all streams and the EF were relatively high in the small stream and PLI were non polluted(less than 1). In addition, organic matter, heavy metal content and pollution were highly correlation with grain size. Surface sediments in study area, heavy metal pollution of the Sunakdonggang were relatively high compared to the other stream but these results were not serious pollution that exceed the sediment pollution evaluation standard of river and lake in Korea and pollution levels adversely affected the majority of benthos were not.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 연구 지역
  2.2. 분석 방법
  2.3. 농집 지수, 부화 계수 및 PLI 산출 방법
 3. 결과 및 고찰
  3.1. 입도, 함수율 및 완전연소가능량
  3.2. 중금속 분포 특성
  3.3. 퇴적물 기준과의 비교 분석
  3.4. 농집 지수, 부화 계수와 PLI
  3.5. 상관관계 분석
 4. 결론
 REFERENCE

• 김신(국립환경과학원 낙동강물환경 연구소) | Shin Kim (Nakdong River Environment Research Center, National Institute of Environmental Research)
• 김주언(국립환경과학원 낙동강물환경 연구소) | Jueon Kim (Nakdong River Environment Research Center, National Institute of Environmental Research)
• 이권철(국립환경과학원 낙동강물환경 연구소) | Kwonchul Lee (Nakdong River Environment Research Center, National Institute of Environmental Research)
• 이규열(환경부 낙동강유역환경청) | Kyuyeol Lee (Copyrights Ministry of Environment, All Rights Reserved)
• 전혜린(국립수산과학원 남서해수산 연구소) | Hyelyn Jeon (Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
• 유재정(국립환경과학원 낙동강물환경 연구소) | Jaejung Yu (Nakdong River Environment Research Center, National Institute of Environmental Research)
• 이인정(국립환경과학원 낙동강물환경 연구소) | Injung Lee (Nakdong River Environment Research Center, National Institute of Environmental Research)
• 안정민(국립환경과학원 낙동강물환경 연구소) | Jungmin Ahn (Nakdong River Environment Research Center, National Institute of Environmental Research) Corresponding author