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Seasonal and Stational Variation of SS and COD and Their Relationship in Doam Bay

도암만 수질의 부유물질 농도와 화학적 산소요구량의 시·공간적 특성 및 상관관계

  • Chang, Ji-Seong (Department of Environmental Education, Sunchon National University) ;
  • Chang, Ji-Hye (Department of Environmental Education, Sunchon National University) ;
  • Cho, Misun (Department of Environmental Education, Sunchon National University) ;
  • Kahng, Hyung-Yeel (Department of Environmental Education, Sunchon National University) ;
  • Jung, Jae-Sung (Department of Biology, Sunchon National University) ;
  • Ahn, Samyoung (Department of Environmental Education, Sunchon National University)
  • 장지승 (순천대학교 환경교육과) ;
  • 장지혜 (순천대학교 환경교육과) ;
  • 조미선 (순천대학교 환경교육과) ;
  • 강형일 (순천대학교 환경교육과) ;
  • 정재성 (순천대학교 생물학과) ;
  • 안삼영 (순천대학교 환경교육과)
  • Received : 2013.06.14
  • Accepted : 2014.04.28
  • Published : 2014.05.30

Abstract

Seasonal and stational variation of SS and COD were investigated from February 2008 to December 2010 and the relationship between them was discussed. During three years monitoring, SS decreased significantly (46% decline) possibly due to the increase of precipitation and thereby resulting salinity drop. COD on average was the highest in 2009. SS was the highest in autumn and the lowest in winter, and over 72% of SS was FSS. While SS is high in the upper sampling stations of the bay with shallow water, COD values do not show any relationship to the geomorphological characteristics. $COD_{ins}$, which was defined as COD after filtration, ranged 56%(winter) ~ 44.6%(summer) and showed no correlation with SS. It indicates that high SS concentration is not necessarily related to the high $COD_{ins}$. The seasonal $COD_{ins}$/SS data, which can be interpreted as COD density in SS, shows that SS in winter contains the dense COD materials compared to the other seasons.

Keywords

Suspended solid;$COD_T$;$COD_s$;$COD_{ins}$;Doam bay

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