环境材料中226Ra测定的224Ra校正

224Ra correction for determination of 226Ra in environmental materials.

作者信息

Kataoka T, Michihiro K, Yamamoto T

出版信息

Radioisotopes. 1985 Dec;34(12):662-7. doi: 10.3769/radioisotopes.34.12_662.

DOI:10.3769/radioisotopes.34.12_662

Abstract

The most commonly available 226Ra determination was too time-consuming to be suited to 226Ra monitoring for the accidental release. The formula for determination of 226Ra was derived by 224Ra correction for WHO's equation. A rapid determination of 226Ra in environmental materials was made possible by using this formula. The 226Ra values of the soil and natural water at Ningyoh-Tohge obtained by the present method were in good agreement with those by the conventional WHO method. It was demonstrated that 226Ra of more than about 37 mBq (1 pCi) in the sample could be determined within 4 days by this method.

摘要

最常用的镭-226测定方法耗时过长，不适用于对意外释放进行镭-226监测。镭-226的测定公式是通过对世界卫生组织（WHO）的公式进行镭-224校正而推导出来的。使用该公式可实现对环境材料中镭-226的快速测定。用本方法测得的宁约托赫格土壤和天然水中的镭-226值与世界卫生组织传统方法测得的值高度一致。结果表明，用该方法可在4天内测定出样品中超过约37毫贝克勒尔（1皮居里）的镭-226。