Summertime elevation of 222Rn levels in Huntsville, Alabama.
Summertime elevation of 222Rn levels in Huntsville, Alabama.
复制标题
阿拉巴马州亨茨维尔夏季海拔高度为 222Rn。
DOI：
10.1097/00004032-199102000-00006
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发表时间：
1991
期刊：
影响因子：
2.2
通讯作者：
R. J. Saultz
中科院分区：
文献类型：
--
作者：
D. L. Wilson;R. Gammage;C. Dudney;R. J. Saultz
在亚利桑那州亨茨维尔的四个有爬行空间的房子里，研究了室内Rn浓度和邻近喀斯特地形中的Rn。在温暖的夏季天气，富Rn的空气可能会通过暴露在物业表面的洞穴中的石灰石溶液空穴排出。一个可能的相互关联的发现是，室内222Rn水平在夏季明显高于冬季。房屋下面的岩溶在结构上是有断层的，很有可能促进了氡从溶洞到爬行空间的运输。除了较大的季节变化外，室内氡浓度的每日突变也被记录下来。如果这些特定房屋的业主或居民曾试图在秋季对Rn进行短期筛查测量，则可能会出现问题，包括假阴性，因为Rn浓度在几天内发生了数量级的变化。一年中进行筛查测量的最佳时间是在夏季，此时室内氡浓度更有可能达到最大值。
Indoor Rn concentrations and Rn in adjacent karst terrains were studied at four houses with crawlspaces in Huntsville, AL. In warm summertime weather, Rn-rich air may vent through limestone solution cavities exposed as holes at the surface of the properties. A probable interrelated-finding is that the indoor levels of 222Rn are distinctly higher in the summer than winter. The karst underlying the homes is structurally faulted and, in all probability, facilitates Rn transport from the solution cavities to the crawlspaces. Abrupt day-to-day changes in indoor Rn concentrations were recorded in addition to large seasonal changes. If the owners or residents of these particular homes had attempted to make, and interpret, short-term screening measurements for Rn during the fall season, problems, including false negatives, could have arisen because of order-of-magnitude changes in Rn concentration occurring over a few days. The best time of year to make screening measurements would be during the summer when indoor Rn concentrations are more likely to reach their maximum values.