Effects of tetrachloroethene on the measurement of radon in water with liquid scintillation counting method.

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ID: 109777
2014
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Abstract
This study investigated the effects of tetrachloroethene (PCE) on radon measurements that employed the liquid scintillation counting (LSC) method referring to 7500-Rn B of Standard Methods for the Examination of Water and Wastewater. Laboratory-produced radon-enriched water was used to compare the counting rates of the radon water with and without PCE addition, and groundwater samples from a site contaminated by chlorinated solvents were used to investigate the application of the laboratory experiments. The results showed that the major factor reducing counting efficiency was resulted from the interaction between PCE and a cocktail through the quench effect. The counting rate showed an exponentially decreasing trend when PCE addition was increased. The results indicated that a small addition of PCE reduced the counting rate considerably. An alternative energy channel 500-1000 to the optimal channel was suggested to attenuate the quench effect on radon measurement. The quench effect was also observed on samples from a site contaminated by chlorinated solvents. The concepts and procedures presented in this study are a reference for future research on the topic of chlorinated solvents or other quench chemicals involving in radon measurement.
Reference Key
chen2014effectsjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Chen, Yao-Tsung;Lu, Chih-Jen;
Journal Journal of environmental radioactivity
Year 2014
DOI
10.1016/j.jenvrad.2013.09.011
URL
Keywords
radon dnapl liquid scintillation counting pce quench

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