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Breakthrough during air sampling with polyurethane foam: What do PUF 2/PUF 1 ratios mean?
Umeå University, Faculty of Science and Technology, Department of Chemistry. (EcoChange)
Umeå University, Faculty of Science and Technology, Department of Chemistry. (EcoChange)
2018 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 192, p. 267-271Article in journal (Refereed) Published
Abstract [en]

Frontal chromatography theory is applied to describe movement of gaseous semivolatile organic compounds (SVOCs) through a column of polyurethane foam (PUF). Collected mass fractions (FC) are predicted for sample volume/breakthrough volume ratios (τ = VS/VB) up to 6.0 and PUF bed theoretical plate numbers (N) from 2 to 16. The predictions assume constant air concentrations and temperatures. Extension of the calculations is done to relate the collection efficiency of a 2-PUF train (FC1+2) to the PUF 2/PUF 1 ratio. FC1+2 exceeds 0.9 for PUF 2/PUF 1 ≤ 0.5 and lengths of PUF commonly used in air samplers. As the PUF 2/PUF 1 ratio approaches unity, confidence in these predictions is limited by the analytical ability to distinguish residues on the two PUFs. Field data should not be arbitrarily discarded because some analytes broke through to the backup PUF trap. The fractional collection efficiencies can be used to estimate air concentrations from quantities retained on the PUF trap when sampling is not quantitative.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 192, p. 267-271
Keyword [en]
Air sampling, Semivolatile organic compounds, Polyurethane foam, Frontal chromatography, Collection efficiency
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-141454DOI: 10.1016/j.chemosphere.2017.10.152ISI: 000418313900030PubMedID: 29107878OAI: oai:DiVA.org:umu-141454DiVA, id: diva2:1154828
Available from: 2017-11-06 Created: 2017-11-06 Last updated: 2018-06-09Bibliographically approved

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Bidleman, Terry F.Tysklind, Mats

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