Measuring ^222Rn in aquatic environment via Pulsed Ionization Chamber Radon Detector
Measuring ^222Rn in aquatic environment via Pulsed Ionization Chamber Radon Detector
复制标题
DOI：
10.1007/s13131-023-2183-9
复制
发表时间：
2023-08
影响因子：
1.4
通讯作者：
Lijun Song;Wen Liu;Shibin Zhao;Chunqian Li;Jinjia Guo;N. Dimova;Bochao Xu
中科院分区：
文献类型：
--
作者：
Lijun Song;Wen Liu;Shibin Zhao;Chunqian Li;Jinjia Guo;N. Dimova;Bochao Xu
氡（Rn）是自然界中天然存在的放射性惰性气体，222 Rn作为强示踪剂常用于水下地下水排放等时间尺度为数小时到数天的水环境研究。在这里，我们开发了一种新的方法来测量离散的水样品中的222 Rn浓度范围宽，使用脉冲电离室（PIC）氡检测器。当使用500 mL水样体积时，新的PIC系统的灵敏度在6.06计数/分钟（1 Bq/L）下进行评价。一个强大的对数相关性之间的样品体积，从250 mL到5 000 mL，在这项研究中获得的系统灵敏度强烈表明，这种方法是适合于测量各种天然沃茨中的氡浓度水平。与现有的测量样品中氡的方法相比，PIC系统更便宜，更容易操作，并且不需要额外的附件（例如，干燥管等）以在整个点算过程中保持稳定的测量值。
Radon (Rn) is a naturally occurring radioactive inert gas in nature, and222Rn has been routinely used as a powerful tracer in various aquatic environmental research on timescales of hours to days, such as submarine groundwater discharge. Here we developed a new approach to measure222Rn in discrete water samples with a wide range of222Rn concentrations using a Pulsed Ionization Chamber (PIC) Radon Detector. The sensitivity of the new PIC system is evaluated at 6.06 counts per minute for 1 Bq/L when a 500 mL water sample volume is used. A robust logarithmic correlation between sample volumes, ranging from 250 mL to 5 000 mL, and system sensitivity obtained in this study strongly suggests that this approach is suitable for measuring radon concentration levels in various natural waters. Compared to the currently available methods for measuring radon in grab samples, the PIC system is cheaper, easier to operate and does not require extra accessories (e.g., drying tubes etc.) to maintain stable measurements throughout the counting procedure.