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Environmental Engineering Research 2002;7(2): 93-101. DOI: https://doi.org/10.4491/eer.2002.7.2.093
CHARACTERIZATION OF DISSOLVED ORGANIC MATTER IN A SHALLOW EUTROPHIC LAKE AND INFLOWING WATERS
Yong-Hwan Kim1, Shun-Hwa Lee2, Akio Imai3, and Kazuo Matsushige3
1Faculty of Environmental Science & Engineering, Kyungsan University, Gyungbook 712-715, Korea
2Department of Environmental Engineering, Yeungnam University, Gyungbook 712-749, Korea
3National Institute for Environmental Studies, Ibaraki 305-0053, Japan
Corresponding Author: Yong-Hwan Kim ,Tel: +82-53-819-1418, Fax: +82-53-819-1271, Email: yhkim0214@kyungsan.ac.kr
Received: July 17, 2001;  Accepted: April 18, 2002.
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ABSTRACT
The seasonal patterns of dissolved organic matter (DOM) in Lake Kasumigaura, a shallow, eutrophic lake, and several DOM sources in its catchment area were investigated. DOM was fractionated using three resin adsorbents into classes: aquatic humic substances (AHS=humic acid+fulvic acid), hydrophobic neutrals (HoN), hydrophilic acids (HiA), bases (BaS) and hydrophilic neutrals (HiN). The DOM produced significantly different fraction distributions depending on the origin of sample. AHS and HiA prevailed over AHS in the lake while AHS and HiA existed at almost the same concentration levels in the rivers. AHS seems to be a more dominant component in river water than lake water. The dominance of organic acids was also observed in the DOM sources: forest stream (FS), plowed field percolate (PFP), domestic sewage (DS) and sewage treatment plant effluent (STPE).
Keywords: aquatic humic substances | DOM fractionation | hydrophilic acid | hydrophobic acid
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