Radon measurement in karstic waters with Lucas cell technique

Morin, J.-P. and Baixeras, C. and Gourcy, L. and Ramoneda, J. and Freixes, A. and Manolopoulou, M. and Meus, P. and Seidel, J.-L. and Corbin, J.C. (1999) Radon measurement in karstic waters with Lucas cell technique. Il nuovo cimento C, 22 C (3-4). pp. 597-604. ISSN 1826-9885

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Based on Lucas cell technique, the portable device named “PRASSI” (SILENA mod. 5S) was used to realise discrete radon measurements in water samples. The calibration factor is (64.766.9) cpmQBq21 and, with the present set-up for measuring radon in water, the detection and the determination limits are, respectively, 0.007 and 0.020 Bq. Thus, the device is well adapted for determining low radon content in karstic waters. Several discrete radon samplings were performed nearly every week in the three main springs of the Bastareny karstic system (Catalonian Pyrenees, N-E Spain). Thus, it was possible to estimate the reproducibility of the methodology as well as to characterise every spring of the aquifer in relation to their hydrogeological features. With the portable radon monitor, some useful measurements were achieved to estimate radon loss due to degassing process over short distances, with important consequences for radon studies in karstic waters. Lastly, it was possible to perform intensive sampling during a flood and the results point out the great variability of radon levels, closely related to the flow rate trend. That permitted also an intercomparison with other radon probes installed previously in every spring, for continuous radon measurements.

Item Type: Article
Additional Information: Paper presented at the “Fourth International Conference on Rare Gas Geochemistry”, Rome, October 8-10, 1997.
Uncontrolled Keywords: Phenomena related to earthquake prediction; groundwater; radiation detectors; conference proceedings
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra
Depositing User: Marina Spanti
Date Deposited: 11 Oct 2019 13:04
Last Modified: 11 Oct 2019 13:04
URI: http://eprints.bice.rm.cnr.it/id/eprint/13515

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