The natural radioactivity in water by gross alpha and beta measurements

被引：73
作者：
Bonotto, D. M. [1 ]
Bueno, T. O. [1 ]
Tessari, B. W. [1 ]
Silva, A. [1 ]
机构：
[1] UNESP, Dept Petrol & Metalogenia, BR-13506900 Rio Claro, SP, Brazil
来源：
RADIATION MEASUREMENTS | 2009年 / 44卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
Gross alpha; Gross beta; Gamma-ray spectrometry; Drinking water quality; Groundwater radioactivity; SAMPLES;
D O I：
10.1016/j.radmeas.2008.10.015
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
An alternative method for evaluating gross alpha and beta radioactivity in water was developed by performing alpha counting using a surface barrier detector and gamma-ray spectrometry using a Nal(Tl) scintillation detector. Several experiments were realized under controlled conditions in the laboratory with the aim of establishing adequate calibration of the systems utilized for performing activity concentration measurements in water samples of variable salinity. Groundwater samples collected at several spas in Sao Paulo and Minas Gerais States in Brazil were submitted to the developed technique in order to assure its applicability in waters characterized by different Total Dissolved Solids content. The values obtained were compatible with the previous knowledge of the radioactivity of the studied water sources, thus indicating the reliability and usefulness of the method for generating information on investigations focusing environmental aspects and/or the evaluation of the drinking water quality in terms of radiological aspects. (C) 2008 Elsevier Ltd. All rights reserved
引用
收藏
页码：92 / 101
页数：10
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