AN IMPROVED METHOD FOR LOW-LEVEL RN-222 DETERMINATION IN ENVIRONMENTAL WATERS BY LIQUID SCINTILLATION-COUNTING WITH PULSE-SHAPE ANALYSIS

被引：10

作者：

BEM, H ^{[1
]}

BAKIR, YYY ^{[1
]}

BOURABEE, P ^{[1
]}

机构：

[1] KUWAIT UNIV,FAC SCI,DEPT GEOL,KUWAIT,KUWAIT

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS | 1994年 / 186卷 / 02期

关键词：

D O I：

10.1007/BF02162794

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method in which Rn-222 is extracted from 0.5 l water samples to 20 ml toluene is described. 10 ml toluene solution with extracted Rn-222 in directly added to a glass scintillation vial containing 10 ml of liquid naphthalene based scintillation cocktail. Apart from diluting by toluene, the final counting solution still has excellent properties in terms of: alpha/beta separation by pulse shape analysis, detection efficiency and background in the alpha-region. The detection limit of Rn-222 for 0.5 l water samples was 1.5 mBq l(-1) (for 12,000 s count time). The concentration of Rn-222 in different environmental samples such as rain, tap and mineral waters as well as deep well waters were determined.

引用

页码：119 / 127

页数：9

共 14 条

[1] DETERMINATION OF RN-222 AND RA-226 IN ENVIRONMENTAL WATERS BY LIQUID SCINTILLATION-COUNTING [J].