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An Overview of Instrumentation for Measuring Radon in Environmental Studies |
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PP: 135-141 |
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doi:10.18576/jrna/030302
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Author(s) |
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Atef El-Taher,
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Abstract |
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| A number of techniques have been used to measure the concentrations of (222Rn) and their decay products in the
environment. Three characteristics were used to describe the radon measurement techniques: (i) whether the technique
measures 222Rn or its daughter products; (ii) time resolution and (iii) radioactive detection of the type of emission either
alpha, or beta particles or gamma radiation resulting from radioactive decay. Most common methods rely on detection of
alpha particles. Sometimes a single alpha particle (e.g., 218Po for 222Rn) is detected to measure radon isotopes (as in air-inmonitors,
RAD7, Durridge, USA) or by counting all three alpha particles produced in the decay of 222Rn (i.e., 222Rn,
218Po, and 214Po) using scintillation counters. Some methods are based on the detection of gamma-ray emitted
radionuclides during radioactive decay of the progeny of 222Rn (214Bi, 214Pb) and only a few methods utilize beta decays.
The present work discusses the various methods available for radon measurements from different matrices causing radon
release to the environment, wherever applicable, the sensitivity and quality assurance/quality control (QA/QC) aspects of
these techniques are also explored. |
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