Accurate Determination of Low-Level Radon Concentration in Water by Means of γ-Ray Spectrometry

1 February 1998

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 37 (2R)
https://doi.org/10.1143/jjap.37.705

Abstract

A solvent extraction method combined with γ-ray spectrometry has been applied to the measurement of low-level radon concentration in water. Radon in 900 mL of water was extracted into 120 mL of organic solvent. The radon content was derived from γ-ray spectrometry of daughter nuclides ²¹⁴Pb and ²¹⁴Bi. Extraction rates defined by the ratio of the extracted radon amount to that in the original sample of water were experimentally determined to be 0.758±0.020 for xylene and 0.671±0.018 for toluene. The detection limit of the radon concentration measurement was 0.082 Bq L^-1 using the xylene extraction method. This method has been applied to the measurement of the radon concentration in tap water.

Keywords

This publication has 3 references indexed in Scilit:

Direct Comparison of Three Methods for the Determination of Radon in Well Water
Health Physics, 1996
Low-background shielding of Ge detectors for the measurement of residual 152Eu radioactivity induced by neutrons from the Hiroshima atomic bomb
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
Improvements for Measurement of 222Rn in Water.
RADIOISOTOPES, 1992