지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
In Korea, the chemical oxygen demand(COD(sed)) in freshwater sediments has been measured by the potassium permanganate method used for marine sediment because of the absence of authorized analytical method. However, this method has not been fully verified for the freshwater sediment. Therefore, the use or modification of the potassium permanganate method or the development of the new COD(sed) analytical method may be necessary. In this study, two modified COD(sed) analytical methods such as the modified potassium permanganate method for COD(Mn) and the modified closed reflux method using potassium dichromate for COD(Cr) were compared. In the preliminary experiment to estimate the capability of the two oxidants for glucose oxidation, COD(Mn) and COD(Cr) were about 70% and 100% of theoretical oxygen demand(ThOD), respectively, indicating that COD(Cr) was very close to the ThOD. The effective titration ranges in COD(Mn) and COD(Cr) were 3.2 to 7.5 mL and 1.0 to 5.0 mL for glucose, 4.3 to 7.5 mL and 1.4 to 4.3 mL for lake sediment, and 2.5 to 5.8 mL and 3.6 to 4.5 mL for river sediment, respectively, within 10% errors. For estimating COD(sed) recovery(%) in glucose-spiked sediment after aging for 1 day, the mass balances of the COD(Mn) and COD(Cr) among glucose, sediments and glucose-spiked sediments were compared. The recoveries of COD(Mn) and COD(Cr) were 78% and 78% in glucose-spiked river sediments, 91% and 86% in glucose-spiked lake sediments, 97% and 104% in glucose-spiked sand, and 134% and 107% in glucose-spiked clay, respectively. In conclusion, both methods have high confidence levels in terms of analytical methodology but show significant different COD(sed) concentrations due to difference in the oxidation powers of the oxidants.
목차
등록된 정보가 없습니다.
참고문헌 (0)
참고문헌 신청이 논문의 저자 정보
이 논문과 함께 이용한 논문
남강 하류부에서 장기관측 자료를 이용한 유기물과 생물학적/화학적 산소요구량의 월 변동 분석
강동환
,
소윤환
,
박경덕
외 2명
한국환경과학회지
2019
.06
염색폐수 처리를 위한 UF 및 RO membrane 시스템 운전 조건 연구
송문환
한국분석과학회 학술대회
2023
.05
국내 6개 폐수처리시설 유입수 및 방류수의 COD와 TOC 비교
박수형
,
이채영
,
김극태
외 2명
대한환경공학회지
2022
.05
호기성 고정생물막 반응기에서 난분해성 유기물질이 동력학 계수 및 COD/BOD 비에 미치는 영향
박태주
,
송승구
대한환경공학회지
1992
.09
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0102-2023-451-001791236