Radon concentration measurement in water by means of α liquid-scintillation spectrometry with a PERALS spectrometer

被引：8
|
作者：
Hamanaka, S
Shizuma, K
Wen, XQ
Iwatani, K
Hasai, H
机构：
[1] Hiroshima Univ, Fac Engn, Higashihiroshima 739, Japan
[2] Yuge Natl Coll Maritime Technol, Yuge, Ehime 79425, Japan
[3] Hiroshima Denki Inst Technol, Dept Elect Engn, Aki Ku, Hiroshima 73903, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1998年 / 410卷 / 02期
关键词：
D O I：
10.1016/S0168-9002(98)00208-3
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A high-resolution a liquid-scintillation spectrometer, PERALS, has been applied to the measurement of radon concentration in water. The efficiency calibration has been performed for the 5.49 MeV alpha-rays from Rn-222 incorporated with a solvent extraction. Optimum conditions of the solvent extraction for radon have been investigated, and a volumetric ratio of 3 ml scintillator against 1 l sample water was adopted. The lower detection limit was estimated to be 0.68 Bq l(-1) (3 sigma) in water, Applications of this method to ground and spring water samples have been given compared with those results by the gamma-ray spectrometry method. (C) 1998 Elsevier Science B.V. All rights reserved.
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页码：314 / 318
页数：5
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