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Radiation Protection Dosimetry 45:123-125 (1992)
© 1992 Oxford University Press

Measurement of 226Ra in Water and 222Rn in Water and Air by Liquid Scintillation Counting

F. Schönhofer

In the Austrian province of Lower Austria a comprehensive programme for measurement of 222Rn and 226Ra in drinking water was conducted. A simple LSC method was used which gives a LLD of 30 mBq per litre for 226Ra without any chemical separation. Results are presented and the health significance is discussed. For 222Rn in air a commercially available simple charcoal system with LSC was used. The system was tested in a house with elevated radon concentration under normal living conditions. During relatively short 2 day periods a maximum deviation of ±30% from the monthly mean value was found. The disadvantages of LSC are that the procedures are very simple and cheap.


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