Indoor Rn-222 measurements using an activated charcoal detector

Authors
Murase, Y Homma, Y Murakami, I Handa, K Horiuchi, K
Citation
Y. Murase et al., Indoor Rn-222 measurements using an activated charcoal detector, APPL RAD IS, 50(3), 1999, pp. 561-565
Citations number
7
Categorie Soggetti
Multidisciplinary
Journal title
APPLIED RADIATION AND ISOTOPES
ISSN journal
09698043 → ACNP
Volume
50
Issue
3
Year of publication
1999
Pages
561 - 565
Database
ISI
SICI code
0969-8043(199903)50:3<561:IRMUAA>2.0.ZU;2-7
Abstract
A commercially available activated charcoal detector for measuring Rn-222 a ctivity concentrations in air was calibrated with known amounts of Rn-222 a nd examined in terms of air luminescence counts and interferences from Rn-2 20 and Rn-219. The results for conditions normally encountered indoor indic ate that the detector is simple and reliable. The method has been applied t o assay indoor Rn-222 activity concentrations in 387 homes in Tokyo and the adjacent four prefectures, which ranged from 0.7 to 140 Bq/m(3) and averag ed 22.7 Bq/m(3). (C) 1999 Elsevier Science Ltd. All rights reserved.