Determination of 222Rn in fresh water:: Development of a robust method of analysis by α/β separation liquid scintillation spectrometry

被引：12
作者：
Pates, Jacqueline M. [1 ]
Mullinger, Neil J. [1 ]
机构：
[1] Univ Lancaster, Div Environm Sci, Lancaster LA1 4YQ, England
来源：
APPLIED RADIATION AND ISOTOPES | 2007年 / 65卷 / 01期
基金：
英国自然环境研究理事会;
关键词：
radon; liquid scintillation; toluene extraction; stream-aquifer interaction;
D O I：
10.1016/j.apradiso.2006.06.006
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Liquid scintillation spectrometry is used widely for determining Rn-222 in natural waters; however, the benefits of alpha/beta separation have not been fully explored. The extractants toluene and Ultima Gold F were compared, and both performed well for a range of extreme waters. A robust method for calibrating extraction and counting efficiencies has been developed. Detection limits are 20 mBq l(-1) (toluene) and 16 mBq l(-1) (UGF) for a 60 min count and 600-ml sample, halving the required sample volume. (c) 2006 Elsevier Ltd. All rights reserved.
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页码：92 / 103
页数：12
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