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Journal of the Korean Society for Environmental Analysis 2008;11(2):91-98.
Uncertainty Assessment for PCDDs/Fs Measurement using Large Volume Sampler
대용량 포집장치를 적용한 다이옥신 수질분석과정에서 측정불확도의 추정
최재원, 이재희, 문부식
한국수자원공사
Abstract
Uncertainties in measurements of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in ambient waters were estimated using large volume water sampler with polyurethane foam. According to the guidance of uncertainity measurement by International Standardization Organization, optimal procedure model was set up and then calculation and combination of each uncertainty source were performed. Factors affecting PCDD/F concentrations in ambient waters were selected as uncertainties of sampling, spike of internal standards, extraction of polyurethanefoam (PUF), and instrumental analysis. The major factor for each uncertainty procedure was instrumental analysis, and in the order of extraction of PUF, spike of internal standards and sampling. Relative amount of the uncertainty in the present study was estimated to be 13% to the measured concentrations of PCDD/Fs, consistent with the values for serum analysis in an earlier study.
Key Words: Uncertainty, Large volume sampler, PCDD/F, Water.
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