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DIN ISO 16000-14

Indoor air - Part 14: Determination of total (gas and particle-phase) polychlorinated dioxin-like biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDDs/PCDFs) - Extraction, clean-up and analysis by high-resolution gas chromatography and mass spectrometry (ISO 16000-14:2009)

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German title

Innenraumluftverunreinigungen - Teil 14: Bestimmung der Summe gasförmiger und partikelgebundener polychlorierter dioxin-ähnlicher Biphenyle (PCB) und polychlorierter Dibenzo-p-dioxine/Dibenzofurane (PCDD/PCDF) - Extraktion, Reinigung und Analyse mit hochauflösender Gaschromatographie und Massenspektrometrie (ISO 16000-14:2009)

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Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss
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This part of DIN ISO 16000 describes the extraction, clean-up and analysis of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from indoor air samples. After sampling on a filter and a back-up vapour trap (see DIN ISO 16000-13) the filter and the back-up vapour trap are extracted. The clean-up and the separation into a PCB and a PCDD/PCDF fraction are performed by column chromatography. For the analysis high-resolution gas chromatography combined with high-resolution mass spectrometry (HRGC/HRMS) is employed. Losses during extraction and clean-up are detected and compensated by using isotopically-labelled surrogates as internal extraction standards for quantification, together with recovery standards that are added just before the HRGC/HRMS analysis. The method provides accurate quantitative data for tetra- through deca-PCBs and tetra- through octa-PCDDs/PCDFs. It is capable of detecting 0,2 pg/m3 or lower concentrations of most PCBs and PCDFs/PCDDs with air sampling volumes up to 360 m3 or more in special cases. However, it may not be possible to detect all analytes at 0,2 pg/m3 or lower, especially at lower sampling volumes. Precision under normal conditions can be expected to be ± 25 % or better and uncertainty ± 50 % or better. Sampling of PCBs, PCDDs/PCDFs is described in ISO 16000-13; it is part of the overall PCB/PCDD/PCDF measurement procedure. The sampling strategy to analyse PCBs, PCDDs/PCDFs and PAHs in indoor air is described in DIN ISO 16000-12.

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