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Factors affecting the trapping performance of xenon holdup-filters in nuclear medicine applications

Bolmsjö, M. S. and Persson, B. R.R. LU orcid (1982) In Medical Physics 9(1). p.96-105
Abstract

Activated charcoal traps are used in nuclear medicine departments to capture exhaled radioactive xenon gas. In the present study, the trapping performance of charcoal was investigated for different physical qualities in experimental and clinical situations. Various factors affecting the trapping capacity are identified, such as the charcoal mass, moisture and carbon�dioxide concentrations in the sweep gas, gas�flow rate through the trap, and temperature. Improper drying of the exhaled air prior to passage through the charcoal bed appears to be a critical factor, leading to a much earlier breakthrough of xenon. Commercial xenon traps intended for ambient temperature operation were found to be useful only for a limited number of... (More)

Activated charcoal traps are used in nuclear medicine departments to capture exhaled radioactive xenon gas. In the present study, the trapping performance of charcoal was investigated for different physical qualities in experimental and clinical situations. Various factors affecting the trapping capacity are identified, such as the charcoal mass, moisture and carbon�dioxide concentrations in the sweep gas, gas�flow rate through the trap, and temperature. Improper drying of the exhaled air prior to passage through the charcoal bed appears to be a critical factor, leading to a much earlier breakthrough of xenon. Commercial xenon traps intended for ambient temperature operation were found to be useful only for a limited number of patients due to an early breakthrough point. By refrigerating the trap, however, a much larger capacity was achieved. If correctly managed, xenon traps constitute a useful alternative for isolating radioactive xenon wastes in clinical and experimental applications.

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type
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publication status
published
subject
keywords
ACTIVATED CARBON, ADSORPTION, CHARCOAL, FEASIBILITY STUDIES, FILTERS, PERFORMANCE, RADIOACTIVE WASTE DISPOSAL, REFRIGERATION, SORPTIVE PROPERTIES, TRAPS, XENON 133
in
Medical Physics
volume
9
issue
1
pages
96 - 105
publisher
American Association of Physicists in Medicine
external identifiers
  • pmid:7078534
  • scopus:0020074730
ISSN
0094-2405
DOI
10.1118/1.595139
language
English
LU publication?
yes
id
f7e383d9-3a6c-4137-945e-c2a61b4d2c4a
date added to LUP
2020-08-15 17:15:55
date last changed
2024-01-02 17:00:52
@article{f7e383d9-3a6c-4137-945e-c2a61b4d2c4a,
  abstract     = {{<p>Activated charcoal traps are used in nuclear medicine departments to capture exhaled radioactive xenon gas. In the present study, the trapping performance of charcoal was investigated for different physical qualities in experimental and clinical situations. Various factors affecting the trapping capacity are identified, such as the charcoal mass, moisture and carbon�dioxide concentrations in the sweep gas, gas�flow rate through the trap, and temperature. Improper drying of the exhaled air prior to passage through the charcoal bed appears to be a critical factor, leading to a much earlier breakthrough of xenon. Commercial xenon traps intended for ambient temperature operation were found to be useful only for a limited number of patients due to an early breakthrough point. By refrigerating the trap, however, a much larger capacity was achieved. If correctly managed, xenon traps constitute a useful alternative for isolating radioactive xenon wastes in clinical and experimental applications.</p>}},
  author       = {{Bolmsjö, M. S. and Persson, B. R.R.}},
  issn         = {{0094-2405}},
  keywords     = {{ACTIVATED CARBON; ADSORPTION; CHARCOAL; FEASIBILITY STUDIES; FILTERS; PERFORMANCE; RADIOACTIVE WASTE DISPOSAL; REFRIGERATION; SORPTIVE PROPERTIES; TRAPS; XENON 133}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  pages        = {{96--105}},
  publisher    = {{American Association of Physicists in Medicine}},
  series       = {{Medical Physics}},
  title        = {{Factors affecting the trapping performance of xenon holdup-filters in nuclear medicine applications}},
  url          = {{http://dx.doi.org/10.1118/1.595139}},
  doi          = {{10.1118/1.595139}},
  volume       = {{9}},
  year         = {{1982}},
}