Karhu J, Nyman M, Siitari-Kauppi M, Hieta T. Cantilever-enhanced photoacoustic measurement of HTO in water vapor.
PHOTOACOUSTICS 2023;
29:100443. [PMID:
36632604 PMCID:
PMC9826848 DOI:
10.1016/j.pacs.2022.100443]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/15/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
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.
Collapse