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

박미옥; 이용우; 조성아; 김혜미; 박준건; 김성길; 김성수; 이석모

doi:10.7850/jkso.2021.26.2.082

마산만 해수 중 화학적산소요구량과 총유기탄소 분포 특성 및 유기물 지표로서의 적절성 검토
A Study on the Appropriateness as Organic Matters Indicator and the Distribution of Chemical Oxygen Demand and Total Organic Carbon in Masan Bay, Korea 원문보기

바다 : 한국해양학회지 = The sea : the journal of the Korean society of oceanography, v.26 no.2, 2021년, pp.82 - 95

박미옥 (해양환경공단 해양수질팀) , 이용우 (해양환경공단 교육개발팀) , 조성아 (해양환경공단 해양수질팀) , 김혜미 (해양환경공단 해양수질팀) , 박준건 (해양환경공단 해양수질팀) , 김성길 (해양환경공단 해양수질팀) , 김성수 (해양환경공단 해양환경조사연구원) , 이석모 (부경대학교 생태공학과)

초록
AI-Helper

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 이론적산소 요구량(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.

Abstract ▼ AI-Helper

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.

주제어

표/그림 (9)

그림 Fig. 1. A map showing the sampling locations in Masan Bay.
표 Table 1. Minimum, maximum, and average contents of temperature, salinity, DO, chlorophyll a, COD, TOC, DOC, and POC in surface seawater of Masan Bay during 2015
표 Table 2. Minimum, maximum, and average contents of temperature, salinity, DO, chlorophyll a, COD, TOC, DOC, and POC in bottom seawater of Masan Bay during 2015
그림 Fig. 2. Seasonal variations of temperature, salinity, DO, and Chl a in the seawater of Masan Bay during 2015.
그림 Fig. 3. Spatiotemporal distributions of DO in bottom seawater of Masan Bay during 2015.
그림 Fig. 4. Seasonal variations of COD, TOC, DOC, and POC in the seawater of Masan Bay during 2015.
그림 Fig. 5. Ratio of DOC and POC to TOC in the seawater of Masan Bay during 2015.
그림 Fig. 6. Correlation of TOC (mmol L^-1) vs. COD (mmol L^-1) in surface seawater of Masan Bay during 2015.
표 Table 3. COD oxidation efficiency in surface seawater of Masan Bay during 2015

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