Cantilever-enhanced photoacoustic measurement of HTO in water vapor

Juho Karhu; Markus Nyman; Marja Siitari-Kauppi; Tuomas Hieta

Photoacoustics (Feb 2023)

Cantilever-enhanced photoacoustic measurement of HTO in water vapor

Juho Karhu,
Markus Nyman,
Marja Siitari-Kauppi,
Tuomas Hieta

Affiliations

Juho Karhu: Metrology Research Institute, Aalto University, Maarintie 8, Espoo, 02150, Finland; Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki, 00014, Finland; Corresponding author at: Metrology Research Institute, Aalto University, Maarintie 8, Espoo, 02150, Finland.
Markus Nyman: Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki, 00014, Finland
Marja Siitari-Kauppi: Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki, 00014, Finland
Tuomas Hieta: Gasera Ltd., Lemminkäisenkatu 59, Turku, 20520, Finland

Journal volume & issue: Vol. 29
p. 100443

Abstract

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A photoacoustic detection of tritiated water (HTO) is presented. The method uses cantilever-enhanced photoacoustic spectroscopy (CEPAS) to reach sub-ppb sensitivity for HTO in the gas phase. A noise equivalent concentration of 0.88 ppb is reached with a sampling time of 1 min. The high performance and small sample volume of CEPAS allows sensitive detection of HTO from a sample with low total activity.

Published in Photoacoustics

ISSN: 2213-5979 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics: Acoustics. Sound; Science: Physics: Optics. Light
Website: http://www.journals.elsevier.com/photoacoustics/

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