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Uncertainty assessment of polychlorinated dibenzo-p-dioxins and dibenzofuran and dioxin-like polychlorinated biphenyl analysis in stationary source sample emissions in accordance with the impending European standard EN-1948 using fly ashes
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2009 (Engelska)Ingår i: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1216, nr 31, s. 5888-5894Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dl-PCBs) present in stack gas emissions and solid residues from incinerators will be mandatory in the foreseeable future. European standard EN-1948 is in the process of being updated through the addition of a new Part 4 related to the analysis of the 12 dl-PCBs. Therefore, either a comprehensive and reliable method capable of analyzing all of these 29 compounds (12 dl-PCBs and 17 2,3,7,8-PCDD/Fs) needs to be developed, or the existing PCDD/F analytical procedure must be adapted to include the dl-PCBs. This study has taken the latter approach of modifying PCDD/F methodology and in particular the fractionation step, by isolating dioxins and dl-PCBs into separate fractions ready for high resolution gas chromatography coupled to high resolution mass spectrometry (HRGC/HRMS) analysis. Results obtained from the analysis of Certified Reference Materials (CRM-490 and CRM-615) and fly ashes from the European Committee for Standardization (CEN) intercalibration study demonstrated that the proposed methodology is appropriate to determine the dl-PCBs in accordance with the impending European standard EN-1948. Uncertainty values obtained during the validation of the analytical methodology were 13% total I-TEQ (international Toxic Equivalent) for PCDD/Fs and 31% total WHO-TEQ (World Health Organization Toxic Equivalent) in the case of dl-PCBs. In addition, 'real' samples such as emissions and fly ashes were successfully analyzed following the proposed analytical method. (C) 2009 Elsevier B.V. All rights reserved.

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2009. Vol. 1216, nr 31, s. 5888-5894
Nyckelord [en]
PCDD/Fs, dl-PCBs, EN-1948, Emissions, Fly ash, Uncertainty
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Kemi
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Kemi
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URN: urn:nbn:se:oru:diva-13258DOI: 10.1016/j.chroma.2009.06.024ISI: 000268353200013Scopus ID: 2-s2.0-67649672625OAI: oai:DiVA.org:oru-13258DiVA, id: diva2:388179
Tillgänglig från: 2011-01-17 Skapad: 2011-01-11 Senast uppdaterad: 2023-12-08Bibliografiskt granskad

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