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Traceable reference gas mixtures for sulfur-free natural gas odorants
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Organisk kemi (Kmo).ORCID iD: 0000-0002-4037-3106
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Kemi.
2014 (English)In: Analytical Chemistry, ISSN 0003-2700, E-ISSN 1520-6882, Vol. 13, no 1, p. 6695-6702Article in journal (Refereed) Published
Abstract [en]

The first reference gas mixtures of sulfur-free natural gas odorants that are traceable to the International System of Units (SI) have been produced and their compositions validated. These mixtures, which contain methyl acrylate and ethyl acrylate at amount fractions between 1.1 and 2.1 μmol mol-1, can be used to underpin measurements of sulfur-free odorants, which are increasingly being used to odorize natural gas in transmission networks as they have less harmful properties than traditional sulfur-containing odorants. The reference gas mixtures produced have been shown to be stable in passivated aluminum cylinders for at least 8 months and have been validated (to within 6% or less) by interlaboratory measurements at three National Measurement Institutes. The stability of methyl acrylate and ethyl acrylate in gas sampling bags has been investigated, and the challenges of analyzing 2-ethyl-3- methylpyrazine, which is used as a stabilizer in sulfur-free odorants, are also briefly discussed.

Place, publisher, year, edition, pages
2014. Vol. 13, no 1, p. 6695-6702
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Natural Sciences
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URN: urn:nbn:se:ri:diva-6747DOI: 10.1021/ac501525dScopus ID: 2-s2.0-84903698164Local ID: 23771OAI: oai:DiVA.org:ri-6747DiVA, id: diva2:964587
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2019-08-09Bibliographically approved

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Arrhenius, Karine

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