水中氡的现场测量：一种新方法。

In-field radon measurement in water: a novel approach.

机构信息

Department of Physics, University of the Western Cape, Bellville 7535, South Africa.

出版信息

J Environ Radioact. 2010 Dec;101(12):1024-31. doi: 10.1016/j.jenvrad.2010.07.005. Epub 2010 Sep 15.

DOI:10.1016/j.jenvrad.2010.07.005

PMID:20832920

Abstract

This paper presents a novel approach of measuring radon in-water in the field by inserting a MEDUSA gamma-ray detector into a 210 L or 1000 L container. The experimental measurements include investigating the effect of ambient background gamma-rays on in-field radon measurement, calibrating the detector efficiency using several amounts of KCl salt dissolved in tap water, and measuring radon in borehole water. The results showed that there is fairly good agreement between the field and laboratory measurements of radon in water, based on measurements with Marinelli beakers on a HPGe detector. The MDA of the method is 0.5 Bq L⁻¹ radon in-water.

摘要

本文提出了一种通过将 MEDUSA 伽马射线探测器插入 210 L 或 1000 L 容器中，在现场测量水中氡的新方法。实验测量包括研究环境背景伽马射线对现场氡测量的影响，使用溶解在自来水中的几种氯化钾盐来校准探测器效率，以及测量钻孔水中的氡。结果表明，基于使用 HPGe 探测器的 Marinelli 烧杯进行的测量，现场和实验室测量水中氡的结果相当吻合。该方法的 MDA 为 0.5 Bq L⁻¹ 水中氡。