目前我国绝大部分水化学台站和实验室在观测水氡时,都采用石英弦丝静电计射气电离法。因为该法所用仪器设备简单、操作容易、性能较稳定。然而,由于测量电离电流时用眼看弦丝移动显微标尺,容易引起眼睛疲劳,看秒表往往带入主观误差,测试效率低,不适于大批水样同时观测。 At present, most of China’s water chemical stations and laboratories in the observation of water radon, quartz string wire electrometer vaporization method. Because the law used equipment is simple, easy to operate, more stable performance. However, when measuring the ionization current, it is easy to cause eye fatigue by moving the micrometer with the eye wire. The stopwatch often leads to subjective errors, and the test efficiency is low, which is not suitable for observing a large number of water samples at the same time.