Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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A Study on the Analytical Errors of Non-proficient Laboratories Participated in Quality Control Program

작업환경측정기관의 정도관리를 통한 분석능력이 미흡한 기관들의 분석오차 유발요인에 관한 고찰

  • Park, D.W. (Industrial Health Research Institute, Korean Industrial Safety Corporation) ;
  • Shin, Y.C. (Industrial Health Research Institute, Korean Industrial Safety Corporation) ;
  • Park, S.H. (Industrial Health Research Institute, Korean Industrial Safety Corporation) ;
  • Lee, N.R. (Industrial Health Research Institute, Korean Industrial Safety Corporation) ;
  • Oh, S.M. (Industrial Health Research Institute, Korean Industrial Safety Corporation) ;
  • Yoon, C.S. (School of Public Health, Seoul National University) ;
  • Paik, N.W. (School of Public Health, Seoul National University)
  • 박동욱 (한국산업안전공단 산업보건연구원) ;
  • 신용철 (한국산업안전공단 산업보건연구원) ;
  • 박승현 (한국산업안전공단 산업보건연구원) ;
  • 이나루 (한국산업안전공단 산업보건연구원) ;
  • 오세민 (한국산업안전공단 산업보건연구원) ;
  • 윤충식 (서울대학교 보건대학원) ;
  • 백남원 (서울대학교 보건대학원)
  • Published : 1994.05.31
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Abstract

Factors affecting non-proficient analytical ability were compared and evaluated by rating of laboratories and round. Analyst Indices between proficient and non-proficient participants were different. Coefficients of determination($R^2$) for standard of toluene, xylene and trichloroethylene of the 4th round between some proficient and non-proficient participants were significantly different(p<0.05). But, there was no difference in the 5th round. Average desorption efficiency of non-proficient participants was 88%-98%, which was lower than 96%-100% of some randomly selected proficient participants. Also non-proficient participants have a large variance of desorption efficiency, 11.79-19.69%. In the 5th round, desorption efficiency of metyl iso-butyl ketone(MIBK) reported by all participants was lower than 90% tested by NIOSH and especially low compared to other analytes. Participants evaluated to be non-proficient in the metal part have 85%-100.84% of average recovery, which was larger variance than 98% of some proficient participants. Although it is difficult to find quantitatively factors causing non-proficiency in analytical ability, pretreatement techniques and experience of analyst seems to be more important factors to produce accurate analytical result.

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