DETERMINATION OF RA-226 IN WATER WITH A PROPORTIONAL COUNTER

被引：3
|
作者：
ZIKOVSKY, L
机构：
[1] Ecole Polytechnique de Montréal, Montréal, H3C 3A7, Québec
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS | 1991年 / 153卷 / 03期
关键词：
D O I：
10.1007/BF02176872
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A modified version of the classical emanation method has been developed. It consists of emanation of radon from a 1 l water sample with argon, drying of the gas stream and counting of Rn-222 activity with a proportional counter. This method is very simple, reproducible, interference free and sensitive. The 3-sigma detection limit obtained with a 100 min counting time is equal to 5 mBq l-1. Several bottled mineral waters were analyzed by using this method and the mean and the median concentration found were equal to 50 and 20 mBq l-1, respectively.
引用
收藏
页码：165 / 170
页数：6
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