A comparison of winter short-term and annual average radon measurements in basements of a radon-prone region and evaluation of further radon testing indicators.
A comparison of winter short-term and annual average radon measurements in basements of a radon-prone region and evaluation of further radon testing indicators.
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DOI：
10.1097/hp.0000000000000004
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发表时间：
2014-05
期刊：
影响因子：
2.2
通讯作者：
Field RW
中科院分区：
文献类型：
--
作者：
Barros NG;Steck DJ;Field RW
本研究的主要目的是调查地下室冬季短期（7至10天）和地下室年度氡测量之间的时间变化。其他目标是测试短期测量的诊断性能在两个参考水平，并评估其预测年平均地下室氡浓度的能力。驻极体离子室（短期）和α轨道（年度）氡测量由训练有素的人员在爱荷华州住宅。总体而言，短期氡浓度的几何平均值（199 Bq m−3）略高于年氡浓度的几何平均值（181 Bq m−3）。短期测试错误地预测了地下室年氡浓度在148 Bq m−3以下的时间占12%，在74 Bq m−3的时间占2%。短期氡浓度与年氡浓度呈显著正相关（r= 0.87，p <0.0001）。地下室的地基墙材料是唯一对短期和年度测量值之间的绝对差异有影响的重要因素。这项研究的结果提供了证据，表明当参考水平降低到74 Bq m−3时，在室内氡潜能高的地区进行单次短期测试获得假阴性结果的可能性大大降低。
The primary objective of this study was to investigate the temporal variability between basement winter short-term (7 to 10 days) and basement annual radon measurements. Other objectives were to test the short-term measurement’s diagnostic performance at two reference levels and to evaluate its ability to predict annual average basement radon concentrations. Electret ion chamber (short-term) and alpha track (annual) radon measurements were obtained by trained personnel in Iowa residences. Overall, the geometric mean of the short-term radon concentrations (199 Bq m−3) was slightly greater than the geometric mean of the annual radon concentrations (181 Bq m−3). Short-term tests incorrectly predicted that the basement annual radon concentrations would be below 148 Bq m−3 12% of the time and 2% of the time at 74 Bq m−3. The short-term and annual radon concentrations were strongly correlated (r=0.87, p<0.0001). The foundation wall material of the basement was the only significant factor to have an impact on the absolute difference between the short-term and annual measurements. The findings from this study provide evidence of a substantially lower likelihood of obtaining a false negative result from a single short-term test in a region with high indoor radon potential when the reference level is lowered to 74 Bq m−3.