径迹法累积测定室内外氡浓度

Passive Integrating Measurement of Indoor and Outdoor Radon Concentrations

使用ＣＲ－３９探测器和探杯型氡监测器，对本所办公楼地下室及办公室内外氡浓度进行２—６个月春夏秋冬不同季节的累积测定。对收集后的ＣＲ－３９随机扫描读数方式对结果的影响做了比较。结果表明地下室氡浓度高于其他层，室内高于室外，除个别情况外，随机扫描的影响在统计涨落范围内。

Both indoor and outdoor 222Rn concentrations ofan office building in Zhongguancun, Beijing,were determined by using a CR-39 detector andpassive integrating radon monitor in different seasons of spring, summer, autumn and winter,with a total sampling time of 2- 6 months.Theresults show that the radon level found in thebasement was higher than that in the office roomsabove the basement and the indoor radon levelswere higher than the outdoor radon levels. Theerror sources, including the effects of CR-39 random scanning and reading ways on the results ofdetermination, were also discussed. It was foundthat, except in some individual cases, the extentof influence caused by different scanning wayswas within the range of statistical variation.