A method to determine 238U activity in environmental soil samples by using 63.3-keV-photopeak-gamma HPGe spectrometer

被引：26

作者：

Huy, NQ ^{[1
]}

Luyen, TV ^{[1
]}

机构：

[1] Ctr Nucl Tech Ho Chi Minh City, Ho Chi Minh City, Vietnam

来源：

APPLIED RADIATION AND ISOTOPES | 2004年 / 61卷 / 06期

关键词：

U-238; 63.3; keV; gamma-ray spectrometry; soil; activity;

D O I：

10.1016/j.apradiso.2004.04.016

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The paper presents a method of measuring U-238 activity in environmental soil samples by a low background HPGe spectrometer at the 63.3 keV gamma photopeak. The low U-238 activity requires a large size soil sample with a mass of about 100 g. The geometrical and self-absorption effects as well as the density dependence of soil samples were then investigated. A procedure of analyzing environmental soil samples was established with a relative error of about 10%. Two soil samples of known activity were tested and 106 surface soil samples collected from the Southern part of Vietnam were analyzed, and then these results were compared by instrumental neutron activation analytical method. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1419 / 1424

页数：6

共 11 条

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