Optimization of Chemical Oxygen Demand Determination in Seawater Samples Using the Alkaline Potassium Permanganate Method SCIE SCOPUS KCI

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Optimization of Chemical Oxygen Demand Determination in Seawater Samples Using the Alkaline Potassium Permanganate Method
Author(s)
Rho, TaeKeun; Choi, Sang-Hwa; Kim, Eun Soo; Kang, Na Yeon; Cho, Sung Rok; Khang, Sung Hyun; Kang, Dong-Jin
KIOST Author(s)
Rho, TaeKeun(노태근)Choi, Sang-Hwa(최상화)Kang, Nayeon(강나연)Cho, Sung Rok(조성록)Kang, Dong-Jin(강동진)
Publication Year
2018-12
Abstract
Chemical oxygen demand (COD) is a practical parameter that is used to estimate the amount of organic pollutants in aqueous systems. It is generally used as a guideline to control the quality of waste treatment effluent globally and is a management tool to evaluate the total pollution load in the highly developed coastal regions of Korea. It is a preferred method because of the speed and simplicity of the analysis and because there are fewer instrumentation requirements. The Ministry of Oceans and Fisheries (MOF) of the Republic of Korea developed a standard procedure for the measurement of COD. It has been revised several times, and the most recent revision was made in 2013 (MOF 2013-230). In this study, we modified the standard COD measurement procedure (MOF 2013-230), especially the sample digestion apparatus, to enhance analytical efficiency for a large sample number (batch), which is called a Korea Institute of Ocean Science and Technology (KIOST) modified MOF 2013-230. We examined uncertainty related to each experimental step and optimized laboratory conditions to reduce such uncertainties. The detection limit and estimated expanded uncertainty related to the KIOST modified MOF 2013-230 was 0.18 and 0.11 mg O-2/L at a 95% confidence level (k = 2), respectively. This study also provides several tips to maintain consistent COD measurements in seawater using the alkaline potassium permanganate method.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/779
DOI
10.1007/s12601-018-0040-0
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.53, no.4, pp.611 - 619, 2018
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Keywords
chemical oxygen demand; KIOST modified MOF 2013-230; COD detection limit; COD uncertainty; alkaline potassium permanganate method
Type
Article
Language
English
Document Type
Article
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
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