Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
권호 표지

A Study on Characteristics of Natural Organic Matter using XAD and FTIR in Yeongsan River System

XAD 및 FT-IR을 이용한 영산강수계 광주시 유역 자연유기물질의 분포특성 연구

  • Lee, Dong-Jin (Yeongsan River Environment Research Center National Institute of Environmental Research) ;
  • Chon, Kang-Min (Environmental Engineering, Gwangju Institute of Science and Technology) ;
  • Kim, Sang-Don (Yeongsan River Environment Research Center National Institute of Environmental Research) ;
  • Jung, Soo-Jung (Yeongsan River Environment Research Center National Institute of Environmental Research) ;
  • Lee, Kyung-Hee (Yeongsan River Environment Research Center National Institute of Environmental Research) ;
  • Hwang, Tae-Hee (Yeongsan River Environment Research Center National Institute of Environmental Research) ;
  • Lim, Byung-Jin (Yeongsan River Environment Research Center National Institute of Environmental Research) ;
  • Cho, Jae-Weon (Environmental Engineering, Gwangju Institute of Science and Technology)
  • 이동진 (국립환경과학원 영산강물환경연구소) ;
  • 전강민 (광주과학기술원 환경공학과) ;
  • 김상돈 (국립환경과학원 영산강물환경연구소) ;
  • 정수정 (국립환경과학원 영산강물환경연구소) ;
  • 이경희 (국립환경과학원 영산강물환경연구소) ;
  • 황태희 (국립환경과학원 영산강물환경연구소) ;
  • 임병진 (국립환경과학원 영산강물환경연구소) ;
  • 조재원 (광주과학기술원 환경공학과)
  • Received : 2011.10.21
  • Accepted : 2011.12.15
  • Published : 2011.12.31
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Abstract

This study investigated the characteristics of natural organic matter(NOM) with tXAD resin and FT-IR in the Yeongsan river system of Gwangju region. NOM fractionation by XAD 8/4 resins was used to classify hydrophobic and hydrophilic substances. FTIR was applied to classify functional groups in the structure of NOM. In the XAD investigation, most of the four site-samples were mainly hydrophilic substances. In March, hydrophobic substances were dominant in the Gwangju 1 site (GJ-1), while hydrophilic substances were dominant for the other sites. In May, samples of all four sites were hydrophilic with a vigorous activity of microorganism due to increasing temperatures. The October results were very similar with those from March. In the FT-IR investigation, most of the broad and large peaks were assigned to the aliphatic group, particularly the OH group, C-H, $C-H_2$, $C-H_3$, and C-O alcohol group. All were related to hydrophilic substances. Other peaks showed the aromatic group, particularly the C=O (Ketone) Group. As a result, there is an identification of NOM in the Yeongsan river system composing mainly of hydrophilic substances and functional groups (OH, C-H etc.) of the aliphatic compound.

본 연구는 영산강수계 광주지역에 대하여 XAD와 FTIR를 이용하여 자연유기물질에 대한 분포특성을 연구하였다. XAD 8/4 resin을 이용한 NOM fractionation 분석은 친수성 및 소수성을 변별하는데 사용되어졌다. FT-IR은 자연유기물의 구조에서 기능족을 분석하는데 사용되어졌다. XAD 조사에서 영산강본류의 광주상류지점(GJ-1), 광주하류지점(GJ-2), 광주천(GJC), 광주하수처리장(GJS) 등 4개 지점에서 대부분 친수성으로 조사되었다. 다만, 3월에 GJ-1 지점에서는 소수성이 주를 이루었다. 5월에는 수온의 상승과 함께 미생물의 활성의 증가로 4개 지점 공통적으로 친수성으로 조사되었고, 10월에는 3월과 매우 유사한 결과가 되었다. FT-IR 조사에서는 넓거나 높아 뚜렷한 피크들이 주로 지방족 화합물, 특히 OH 그룹, CH, $C-H_2$, $C-H_3$ 및 C-O 알코올 그룹들로 나타났고, 이들은 친수성 물질들이다. FT-IR 조사에서 그 외의 피크들은 약간의 방향족 화합물, 특히 C=O (Ketone) 그룹이 나타났다. 결과적으로 본 연구에서 영산강수계 광주지역은 주로 친수성 물질들이며, 지방족 화합물(OH, C-H etc.)인 것으로 조사되었다.

Keywords

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