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LED-LED portable oxygen gas sensor

Perez de Vargas-Sansalvador, Isabel M. and Fay, Cormac and Fernández-Ramos, M.D. and Diamond, Dermot and Benito-Lopez, Fernando and Capitán-Vallvey, Luis Fermin (2012) LED-LED portable oxygen gas sensor. Analytical and Bioanalytical Chemistry, 404 (10). pp. 2851-2858. ISSN 1618-2650

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Abstract

A portable instrument for oxygen determination, based on the quenching of phosphorescent octaethylporphyrin by gaseous O2 has been developed using the fluorimetric paired emitter–detector diode technique (FPEDD). The instrument configuration consists of two light emitting diodes (LEDs) facing each other including an interchangeable support containing a phosphorescent membrane in between, in which one of the LEDs is used as the light source (emitter LED) and the other working in reverse bias mode as the light detector. The feasibility of using a LED as a luminescent detector is studied. Its small size allows the integration of the instrument into a portable measurement system. A systematic study of the system capabilities as a portable instrument, was carried out in order to optimize: range, sensitivity, short term and long term stability, dynamical behavior, temperature influence, humidity influence and temporal drift.

Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Analytical chemistry
Physical Sciences > Electronic circuits
Engineering > Systems engineering
Physical Sciences > Chemical detectors
Engineering > Electronic engineering
Engineering > Electronics
Physical Sciences > Chemistry
DCU Faculties and Centres:Research Initiatives and Centres > CLARITY: The Centre for Sensor Web Technologies
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Publisher:Springer Verlag
Official URL:http://dx.doi.org/10.1007/s00216-012-6307-x
Copyright Information:© 2012 Springer-Verlag The original publication is available at www.springerlink.com
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Ministerio de Economía y Competitividad, Dirección General de Enseñanza Superior, Junta de Andalucia, European Regional Development Funds, Science Foundation Ireland
ID Code:20392
Deposited On:22 Jan 2015 11:07 by Cormac Fay. Last Modified 27 Apr 2017 13:13

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