Although indoor monitoring of radon and benchmarking of radon measurement devices remain important research topics, few intercomparisons of active radon measurement devices have been performed under realistic conditions, let alone dynamic ones enabling comparison of their transient behavior. Five different radon monitors were therefore placed in a poorly ventilated basement space under three different conditions: 24 h under a steady, elevated radon level, 24 h with fans turned on to produce a radon washout transient, and 9 d with fans turned off for a radon buildup transient. Resulting radon concentrations varied between ~200 and ~2,000 Bq m-3. Accuracy of the devices were evaluated using root-mean-square error, and ventilation data were fit to first order linear compartmental models. To more accurately model behaviors such as cyclic diurnal variations, the source term corresponding to entry of radon from soil into the basement was considered to be non-constant, as it is likely to vary drastically with both the indoor-outdoor pressure differential and soil concentration variations. The improved radon washout model fit very well with the measurements. Despite a wide variety in list prices, all devices performed similarly during transients and at different radon concentrations.

中文翻译：

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使用不同设备测量地下室空间中的氡动力学。

尽管氡气的室内监测和氡气测量设备的基准测试仍然是重要的研究课题，但在现实条件下很少对主动氡气测量设备进行比较，更不用说能够比较其瞬态行为的动态比较了。因此，在三种不同的条件下，将五种不同的氡气监测仪放置在通风不良的地下室空间中：在稳定、升高的氡气水平下放置 24 小时，打开风扇以产生氡气冲洗瞬态，放置 24 小时，以及关闭风扇持续 9 天。氡气累积瞬态。产生的氡浓度在~200 和~2,000 Bq m-3 之间变化。使用均方根误差评估设备的准确性，并将通气数据拟合到一阶线性房室模型。为了更准确地模拟昼夜变化等行为，与氡气从土壤进入地下室相对应的源项被认为是非恒定的，因为它可能会随着室内外压差和土壤浓度的变化而发生巨大变化变化。改进后的氡气冲刷模型与测量结果非常吻合。尽管标价存在很大差异，但所有设备在瞬变期间和不同氡气浓度下的性能均相似。