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2021 Vol.26, Issue 2 Preview Page

Article

A Study on the Appropriateness as Organic Matters Indicator and the Distribution of Chemical Oxygen Demand and Total Organic Carbon in Masan Bay, Korea

마산만 해수 중 화학적산소요구량과 총유기탄소 분포 특성 및 유기물 지표로서의 적절성 검토

MI-OK PARK1
,
YONG-WOO LEE2
,
SEONG-AH CHO3
,
HYE-MI KIM3
,
JUN-KUN PARK4
,
SUNG-GIL KIM5
,
SEONG-SOO KIM6
,
SUK MO LEE7*
박 미옥1
,
이 용우2
,
조 성아3
,
김 혜미3
,
박 준건4
,
김 성길5
,
김 성수6
,
이 석모7*
1Manager, Marine Environment Monitoring Team, Korea Marine Environment Management Corporation, Busan 49111, Korea
2Senior Researcher, Education Planning Team, Korea Marine Environment Management Corporation, Busan 49111, Korea
3Staff, Marine Environment Monitoring Team, Korea Marine Environment Management Corporation, Busan 49111, Korea
4Senior Researcher, Marine Environment Monitoring Team, Korea Marine Environment Management Corporation, Busan 49111, Korea
5Team Leader, Marine Environment Monitoring Team, Korea Marine Environment Management Corporation, Busan 49111, Korea
6Director, Marine Environment Research Institute, Korea Marine Environment Management Corporation, Busan 49111, Korea
7Professor, Department of Ecological Engineering, Pukyoung National University, Busan 48513, Korea
1해양환경공단 해양수질팀 과장
2해양환경공단 교육개발팀 차장
3해양환경공단 해양수질팀 사원
4해양환경공단 해양수질팀 차장
5해양환경공단 해양수질팀 팀장
6해양환경공단 해양환경조사연구원 원장
7부경대학교 생태공학과 교수
*Corresponding Author
31 May 2021. pp. 82-95
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Abstract

We investigated the temporal and spatial distribution characteristics of chemical oxygen demand (COD) and total organic carbon (TOC) in all 13 locations of Masan Bay from February to November in 2015. The COD and TOC contents were high during the June-August period when the pollution load increased. In particular, the concentrations of COD and TOC were about twice as high in the surface water as in the bottom water. In spatial distribution, the COD and TOC concentrations at the inner bay were about twice as high as those of the outer bay in Masan Bay. As a result of estimating the oxidation efficiency of COD from the surface layer of Masan Bay in 2015 based on the theoretical oxygen demand (TOD), it was at the level of about 23%. Due to the low oxidation efficiency of COD, there is a risk that the organic matter in Masan Bay will be somewhat underestimated. Therefore, for quantitative analysis of organic matter, COD and TOC analyses need to be combined.

Keywords
Masan Bay
Chemical oxygen demand (COD)
Total organic carbon (TOC)
Environment parameter
Dissolved oxygen (DO)

마산만에서 유기물의 시공간적 분포 특성을 살펴보기 위해 2015년 월별로 총 13개 정점에서 화학적산소요구량(COD)과 총유기탄소(TOC) 농도를 조사하였다. COD와 TOC 농도는 오염부하량이 증가하는 6~8월에 상대적으로 높았고, 저층보다 표층에서 약 2배 높았다. COD와 TOC 농도는 마산만의 내측 정점에서 다른 정점들에 비해 약 2배 이상 높았다. 2015년 마산만 표층에서 이론적산소요구량(TOD)을 기준으로 COD의 산화 효율성을 추정한 결과, COD의 산화 효율은 약 23%로 낮은 수준이었다. 마산만에서 COD 측정시 낮은 산화 효율은 만 내에 분포하는 유기물 양이 과소평가 될 가능성이 있어, 유기물의 정확한 정량분석을 위해서는 COD와 TOC 분석의 병행 조사가 필요할 것으로 판단된다.

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Information
  • Publisher :The Korean Society of Oceanography
  • Publisher(Ko) :한국해양학회
  • Journal Title :The Sea Journal of the Korean Society of Oceanography
  • Journal Title(Ko) :한국해양학회지 바다
  • Volume : 26
  • No :2
  • Pages :82-95
  • Received Date : 2020-10-07
  • Revised Date : 2021-03-11
  • Accepted Date : 2021-03-16
  • DOI :https://doi.org/10.7850/jkso.2021.26.2.082
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