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 this study, two kinds of soil-based proficiency testing materials (PTMs), NICE-012L and NICE-012R were prepared and certified for Benzen, Toluene, Etylbenzene and Xylene with evaluation of uncertainties. In order to analyse BTEX (Benzen Toluene Etylbenzene Xylene) for the candidate materials, GC/MS was used after pretreatment according to methods of soil analysis by Ministry of Environment. For the homogeneity test among bottles in terms of candidate materials, ISO 13528 and IUPAC Protocol were used and according to the result, both candidate materials showed sufficient homogeneity. Also, the stability test over the candidate materials was accessed according to the ISO Guide 35 by classifying short-term and long-term stability and the result showed that both candidate materials showed decent stability. The reference values of the two candidate materials depending on BTEX components were derived from the average of the 11 samples that were used for verification of the samples' homogeneity. Uncertainty of measurement was combined by uchar that was caused by a characteristic value, $u_{bb}$ that was caused by between-bottle homogeneity, and $u_{stab}$ that was caused by stability, and then combined uncertainty ($u_{PTM}$) was multiplied to the coverage factor (k) derived from the effective degree of freedom from each factor that leads to expanded uncertainty (U) in about 95% of confidence level. The proficiency testing materials developed through this study were supplied to National Institute of Environmental Research (NIER) and utilized as an external proficiency testing materials for evaluating analysis capacity of soil agencies with specialty in terms of soil analysis approved by Minister of Environment.
목차
등록된 정보가 없습니다.
참고문헌 (20)
참고문헌 신청
Australian Government, National Measurement Institute / 2010 / Proficiency Study AQA 9-15, Hydrocarbons in soil :32
Cole, G.M. / 1994 / Assesment and Remediation of Petroleum Contaminated Sites / LEWIS PUBLISHERS :56
2005 / Statistical methods for use in proficiency testing interlaboratory comparisons / ISO 13528 :56~57
2004 / Certification of reference materials-General and statistical principles / ISO Guide 35 :43~47
Kim, G.H. / 2006 / Soil science / Hyangmunsa :174
Cole, G.M. / 1994 / Assesment and Remediation of Petroleum Contaminated Sites / LEWIS PUBLISHERS :56
2005 / Statistical methods for use in proficiency testing interlaboratory comparisons / ISO 13528 :56~57
2004 / Certification of reference materials-General and statistical principles / ISO Guide 35 :43~47
Kim, G.H. / 2006 / Soil science / Hyangmunsa :174
이 논문의 저자 정보
최근 본 자료
댓글(0)
0