다이옥신 숙련도 시험용 비산재 시료의 불확도 평가에 관한 연구
김남찬†·임창인
광운대학교 환경공학과
A Study on Uncertainty Estimation of Fly Ash for Dioxin Proficiency Testing
Nam-Chan Kim† and Chang-In Ihm
Dept. of Environmental Engineering, Kwangwoon University, Seoul 139-701, Korea
Received December 17, 2012/Revised Fabruary 1, 2013/Accepted February 14, 2013

Fly ash samples collected from municipal waste incinerator were prepared for proficiency testing of dioxin
analysis. They were used to evaluate the homogeneity and stability through the several steps. Specially, one
way ANOVA was used as analysis method in this study. In case of identified samples, measurement model
equation of target isomer in analysis were formulated. Then uncertainties of results were calculated by selection
of uncertainty cause and by calculation of uncertainty quantification, synthesis uncertainty, and expansion
uncertainty. The portions of the uncertainties resulted from the amount of internal standard, the separation rate
of sample, the relative reaction factor (RRF) of GC/MS, and efficiency of sample extraction were 35.6%,
35.0%, 25.6%, 3.7%, respectively.

Key words: Dioxin, Proficiency testing, Fly ash, Uncertainty, RRF