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Uncertainty of Online TOC Analyzer in Water Quality Monitoring System  

Lee, Chung-Yul (Environmental Management Corporation)
Lee, Yong-Woon (Environmental Engineering, Chonnam National University)
Lee, Jun-Hung (Environmental Management Corporation)
Lim, Boung-Jin (National Institute of Environmental Research)
Kwon, Young-Jin (Dong-il Shimadzu Corporation)
Khang, Bum-Ju (Hankuk University of Foreign Studies)
Hong, Young-Min (Dong-il Shimadzu Corporation)
Publication Information
Korean Journal of Ecology and Environment / v.40, no.2, 2007 , pp. 193-200 More about this Journal
Abstract
The objective of this study was to estimate uncertainty of online TOC analyzer in water quality monitoring system. A procedure for the estimation of measurement uncertainty of total organic compounds (TOC) based on the ISO approach is presented. It is based on a mathematical model that involves 4 input parameters (standardization, sensitivity, solute effect and representativeness). In this study, a major problem in estimating the uncertainty of online TOC analyzer was the solute effect. It was strongly depends on organic materials. So homogeneity of the sample is the most important consideration. Modified concentration and combined standard uncertainty was $4.71{\pm}0.36$ mg $L^{-1}$ by model modified in this study.
Keywords
uncertainty; online TOC analyzer; water quality monitoring;
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1 국립환경과학원. 2006. 수질자동측정망 정도관리지침. 53pp
2 KOLAS. 2002. 측정결과의 불확도 추정 및 표현을 위한 지침, KOLAS-G-002. 165pp
3 KOLAS. 2004. 시험분야 측정불확도 추정에 관한 지침, KOLAS-G-005. 19pp
4 Charles, E. Yoe and Leigh Skaggs. 1997. Risk and Uncertainty Analysis Procedures for the Evaluation of Environmental Outputs. IWR report 97-R-7. 139pp
5 Christopher, H. Frey. 1992. Quantitative Analysis of Uncertainty and Variability in Environmental Policy Making. AAAS/EPA. 78pp
6 Hammonds, J.S., F.O. Hoffman and S.M. Bartell. 1994. An Introductory Guide to Uncertainty Analysis in Environmental and Health Risk Assessment. SENES Oak Ridge, Inc. 47pp
7 MCERTS. 2003. Continuous Water Monitoring Equipment Part 2: Procedures for Conformity Testing of On-Line Analysers. U.K.EA. 60pp
8 Spitzer, P. 2001. Traceable measurements of pH. Accreditation and quality assurance 6: 55-60   DOI
9 U.S. EPA. 2006. Data Quality Assessment: Statistical Methods for Practitioners. EPA QA/G-9s. 198pp
10 국립환경과학원. 2005. 수질자동측정망 정도관리체계 개발. 211pp
11 환경부. 2004. 수질자동측정망 운영계획. 42pp
12 Leito, I., L. Strauss, E. Koort and V. Pihl. 2002. Estimation of uncertainty in routine pH measurement. Accreditation and quality assurance. 7: 242-249   DOI   ScienceOn
13 국립환경과학원. 2003. 수질측정망 측정 신뢰도 제공방안 연구. 156pp
14 Buzoianu, M. 2000. Practical considerations on the traceability to conventional scales. Accreditation and quality assurance 5: 142-150   DOI
15 기술표준원. 2005. 시험분야 측정불확도 표현지침 개발. 260 pp
16 국립환경과학원. 2005 담수중의 총유기탄소 분석법 연구. 95pp
17 Internation Organization for Standardization (ISO). 1993. Guide to the Expression of Uncertainty in Measurement. ISO/IEC-17025
18 Barry, N. Taylor and Chris E. Kuyatt. 1994. Guidelines for Evaluating and Expressing the Uncertainty of NIST Measuring Results. NIST technical note 1297. 27pp
19 환경부. 1995. 하천 및 호소수 수질자동측정망설치 기본계획 보고서. 155pp
20 환경관리공단. 2001 수질자동측정망 정도관리지침. 26pp
21 Jalukse, L., I. Leito, A. Mashirin and T. Tenno. 2004. Estimation of uncertainty in electrochemical amperometric measurement of dissolved oxygen concentration. Accreditation and quality assurance 9: 340-348   DOI
22 환경관리공단. 2006. 수질원격감시체계 구축을 위한 수질자동 측정기기 부착처리 절차. 10pp
23 EURACHEM/CITAC. 2000. Quantifying Uncertainty in Analytical Measurement. 126pp
24 U.S. EPA. 2000. Quality Manual for Environmental Programs. EPA-5360 A1. 62pp