Document Detail


Optical oxygen sensor based on phosphorescence lifetime quenching and employing a polymer immobilised metalloporphyrin probe. Part 1. Theory and instrumentation.
MedLine Citation:
PMID:  8326759     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A review of the theory of phosphorescence quenching is given, and its particular application to the sensing of oxygen is outlined. The advantages of measuring phosphorescence lifetime as opposed to phosphorescence intensity are reviewed. The advantages of using the metalloporphyrins as such sensors are identified and in particular the characteristics of palladium coproporphyrin are discussed. The exceptionally long room temperature lifetime of this material makes it possible to use relatively simple PC-based instrumentation to measure lifetimes, with a xenon flashlamp light source. The design of such a system is given and its performance in measuring phosphorescence lifetime in aqueous solutions is demonstrated.
Authors:
P M Gewehr; D T Delpy
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medical & biological engineering & computing     Volume:  31     ISSN:  0140-0118     ISO Abbreviation:  Med Biol Eng Comput     Publication Date:  1993 Jan 
Date Detail:
Created Date:  1993-08-09     Completed Date:  1993-08-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7704869     Medline TA:  Med Biol Eng Comput     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  2-10     Citation Subset:  IM    
Affiliation:
Department of Medical Physics & Bioengineering, University College London, UK.
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MeSH Terms
Descriptor/Qualifier:
Fiber Optic Technology
Humans
Luminescent Measurements*
Mathematics
Membranes, Artificial
Metalloporphyrins*
Monitoring, Physiologic / instrumentation,  methods
Oxygen / analysis*
Partial Pressure
Chemical
Reg. No./Substance:
0/Membranes, Artificial; 0/Metalloporphyrins; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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