1983 年 18 巻 1 号 p. 23-27
The toluene extraction-liquid scintillation counting method was used to measure the radon concentration in water samples of Taiwan, R. O. C. The experimental results showed that the counting efficiency for both α and β emitted from radon and its daughters could reach 100%. The separation of activity of 222Rn from 220Rn was performed according to Bunny method. Thirty sampling stations including water samples from wells and hot springs throughout Taiwan were analyzed. The measured data show that 220Rn has much higher concentration than 222Rn. The concentration for the former is in the order of 10-7Ci/l while that for the later is about 10-10Ci/l.
