Open AccessUncertainty evaluation of the determination of toxic equivalent quantity of polychlorinated dibenzo- p -dioxins and dibenzofurans in soil by isotope dilution high resolution gas chromatography and high resolution mass spectrometry
Author(s) -
Bing Du,
Aimin Liu,
Yanqiu Huang
Publication year - 2014
Publication title -
sepu/chinese journal of chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.171
H-Index - 19
eISSN - 1872-2059
pISSN - 1000-8713
DOI - 10.3724/sp.j.1123.2014.05022
Subject(s) - isotope dilution , chemistry , resolution (logic) , gas chromatography , mass spectrometry , high resolution , polychlorinated dibenzo p dioxins , polychlorinated dibenzofurans , environmental chemistry , isotope , gas chromatography–mass spectrometry , chromatography , geology , physics , remote sensing , quantum mechanics , artificial intelligence , computer science
Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in soil samples were analyzed by isotope dilution method with high resolution gas chromatography and high resolution mass spectrometry (ID-HRGC/HRMS), and the toxic equivalent quantity (TEQ) were calculated. The impacts of major source of measurement uncertainty are discussed, and the combined relative standard uncertainties were calculated for each 2, 3, 7, 8 substituted con- gener. Furthermore, the concentration, combined uncertainty and expanded uncertainty for TEQ of PCDD/Fs in a soil sample in I-TEF, WHO-1998-TEF and WHO-2005-TEF schemes are provided as an example. I-TEF, WHO-1998-TEF and WHO-2005-TEF are the evaluation schemes of toxic equivalent factor (TEF), and are all currently used to describe 2,3,7,8 sub- stituted relative potencies.