The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Characteristics of Total Organic Carbon and Chemical Oxygen Demand in the Coastal Waters of Korea

한국 연안수에서 총유기탄소 및 화학적 산소요구량 분포 특성

  • Published : 2003.08.01
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Abstract

In order to improve our knowledge of the characteristics of organic compounds in coastal waters, water samples were collected from the Incheon coastal region, the Hyungsan River in Youngil Bay and the Busan coastal region. Also, mooring was carried out near the Kanghwa Island and Seo Island. In this study, the relationship between the total organic carbon (TOC) and salinity, chemical oxygen demand (COD) and salinity were evaluated and determined. Riverine end-member of TOC into the Korean coastal area and its COD estimated from these relationships were 5.32 mg C/l and 8.87 mg O$_2$/l, respectively. The oxidation efficiency of COD to TOC estimated using the high-temperature catalytic oxidation method was about 47％. The linear relationship between TOC and COD was derived as COD (mg O$_2$/l)=0.61${\times}$TOC (mg C/l) -0.03, (R$^2$=0.66). Therefore, it is possible to estimate total organic carbon using this equation from previously reported chemical oxygen demand.

연안수에서 유기 화합물의 정량적인 특성을 파악하기 위하여 인천 연안 지역, 포항의 영일만을 포함한 형산강 지역 그리고 부산 연안 지역에서 시료를 채취하였다. 또한 강화도와 세어도에서 고정관측도 하였다. 연안수의 총유기탄소(TOC)와 염분과의 상관 관계 및 화학적 산소요구량(COD)과 염분과의 상관 관계를 이용하여 추정한 하천에서 연안역으로 유입되는 총유기탄소의 riverine end-member 값은 5.32 mg C/l, 화학적 산소요구량의 riverine end-member 값은 8.87 mg $O_2$/1로 나타났다 고온 촉매 산화(HTCO)방법을 이용하여 측정한 총유기탄소와 화학적 산소요구량을 비교한 결과 화학적 산소요구량은 총유기탄소의 약 47%를 반영하는 것으로 나타났다. 총유기탄소와 화학적 산소요구량에 대한 상관 관계식은 COD(mgO$_2$,/1)=0.61$\times$TOC(mg C/l)-0.03,($R^2$=0.66)으로 이 관계식을 이용하면 기존에 보고된 화학적 산소요구량으로 총유기탄소를 추정하는데 활용할 수 있을 것으로 판단된다.

Keywords

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