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A new method for automatic measurement of low-level radon in water
- Source :
- Applied Radiation and Isotopes. 47:855-859
- Publication Year :
- 1996
- Publisher :
- Elsevier BV, 1996.
-
Abstract
- A new single phototube liquid scintillation counting system for automatic determination of 222Rn in ground water for earthquake prediction is described. About 40% of radon is transferred from 1.0 L of water with a stream of air into 25 ml of toluene in a sample vial. Delayed coincidence counting of 214Bi and its decay product, 214Po reduces the background to 0.02 cpm. The 214Po detection efficiency is above 90%. Water containing 20 mBq/L of radon can be measured with 10% accuracy in 3 h.
Details
- ISSN :
- 09698043
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Applied Radiation and Isotopes
- Accession number :
- edsair.doi...........4980ff0564d1437f51a0d04d32acc886