북한강 수계 호소퇴적물 오염도 평가

• Published in: 한국물환경학회지 Vol. 35; no. 2; pp. 105 - 114
• Main Authors: 이보미, 성기선, 김국회, 문권영, 신명철, 홍정기, 김갑순, 유순주, 허인애, 노혜란, Lee, Bo-Mi, Seon, Seong-Ki, Kim, Guk-Hui, Moon, Gwon-Young, Shin, Myoung-Chul, Hong, Jung-Ki, Kim, Kap-Soon, Yu, Soon-Ju, Huh, In-Ae, Noh, Hye-Ran
• Format: Journal Article
• Language: Korean
• Published: 한국물환경학회 31.03.2019
• Subjects: 환경공학; Organic matter; Sediment; Buk-han river; Lake; Pollution assessment; Metals
• ISSN: 2289-0971; 2289-098X
• DOI: 10.15681/KSWE.2019.35.2.105

The objective of this study was to investigate the pollution assessment of organic matters, nutrients, and metals in sediment in major lakes (5 lakes and 17 sites) of Buk-han river using various sediment pollution assessment guidelines and indices. The concentrations of organic matters and nutrients were lower than class IV (Sediment pollution assessment guidelines of Korea) and Severe Effect Level (SEL, Sediment pollution assessment guidelines of Ontario). This results indicated that the lakes sediments were unpolluted and tolerable level for sediment dwelling organisms by organic matters and nutrients. However, several sites of Chuncheon and Soyang lakes were evaluated "heavily polluted" level by organic index (Org-index). The order of lakes by metals concentrations from the one with the highest concentration was Hwacheon, Chuncheon, Cheongpyeong, Uiam, Soyang. All lakes except Hwacheon were assessed unpolluted to marginally and tolerable level for sediment dwelling organisms by metals based on sediment pollution assessment guidelines (Korean and Ontario), indices of geoaccumulation ($I_{geo}$), pollution loading (PLI) and ecological risk (RI). In Lake Hwacheon, every investigated sites were polluted with metals, especially Hg, based on sediment pollution assessment guideline of Korea and indices ($I_{geo}$, PLI and RI). The dwelling organisms in sediment of Hwacheon Lake were likely to be severed by metals.