CHARACTERIZATION OF DISSOLVED ORGANIC MATTER IN A SHALLOW EUTROPHIC LAKE AND
INFLOWING WATERS

Kim, Yong-Hwan; Lee, Shun-Hwa; Imai, Akio; Matsushige, Kazuo

doi:2002.7.2.93

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.

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