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  • Persson, AndersUppsala universitet,Tillämpad kärnfysik,Ion Physics (författare)

Evaluation of Intracavity Optogalvanic Spectroscopy for Radiocarbon Measurements

  • Artikel/kapitelEngelska2013

Förlag, utgivningsår, omfång ...

  • 2013-06-24
  • American Chemical Society (ACS),2013
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-202646
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-202646URI
  • https://doi.org/10.1021/ac400905nDOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Anal. Chem., Article ASAP
  • Ever since the first publication of intracavity optogalvanic spectroscopy (ICOGS) in 2008, this novel technique for measuring the 14C/12C ratio in carbon dioxide has rendered considerable attention. As a result, there are currently at least five different research groups pursuing research on ICOGS. With a claimed limit of detection of 10–15 (14C/12C), i.e., in the same order as accelerator mass spectroscopy, achieved with a relatively inexpensive and uncomplicated table-top system, ICOGS has major scientific and commercial implications. However, during the past 5 years, no research group has been able to reproduce these results or present additional proof for ICOGS’s capability of unambiguous 14C detection, including the authors of the original publication. Starting in 2010, our group has set up a state-of-the-art ICOGS laboratory and has investigated the basic methodology of ICOGS in general and tried to reproduce the reported experiments in particular. We have not been able to reproduce the reported results concerning the optogalvanic signals dependence on14C concentration and wavelength and, ultimately, not seen any evidence of the capability of ICOGS to unambiguously detect 14C at all. Instead, we have found indications that the reported results can be products of measurement uncertainties and mistakes. Furthermore, our results strongly indicate that the reported limit of detection is likely to be overestimated by at least 2 orders of magnitude, based on the results presented in the original publication. Hence, we conclude that the original reports on ICOGS cannot be confirmed and therefore must be in error.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Eilers, GerrietUppsala universitet,Tillämpad kärnfysik,Ion Physics(Swepub:uu)geeil169 (författare)
  • Ryderfors, LinusUppsala universitet,Tillämpad kärnfysik,Ion Physics (författare)
  • Mukhtar, EmadUppsala universitet,Fysikalisk kemi(Swepub:uu)emadmukh (författare)
  • Possnert, GöranUppsala universitet,Tillämpad kärnfysik,Ion Physics(Swepub:uu)gpo27116 (författare)
  • Salehpour, MehranUppsala universitet,Tillämpad kärnfysik,Ion Physics(Swepub:uu)mehsa606 (författare)
  • Uppsala universitetTillämpad kärnfysik (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Analytical Chemistry: American Chemical Society (ACS)85ASAP:14, s. 6790-67980003-27001520-6882

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