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LED-LED portable oxygen gas sensor

Journal Article


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, with 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 luminescence detector is studied. Its small size enables integration of the instrument into a portable measurement system. A systematic study of the system capabilities as a portable instrument was performed to optimize range, sensitivity, short term and long term stability, dynamic behaviour, effect of temperature and humidity, and temporal drift.

UOW Authors


  •   Perez De Vargas-Sansalvador, I. M. (external author)
  •   Fay, Cormac
  •   Fernandez-Ramos, M. D. (external author)
  •   Diamond, Dermot (external author)
  •   Benito-Lopez, Fernando (external author)
  •   Capitan-Vallvey, L. F. (external author)

Publication Date


  • 2012

Citation


  • Perez de Vargas-Sansalvador, I. M., Fay, C., Fernandez-Ramos, M. D., Diamond, D., Benito-Lopez, F. & Capitan-Vallvey, L. F. (2012). LED-LED portable oxygen gas sensor. Analytical and Bioanalytical Chemistry, 404 (10), 2851-2858.

Scopus Eid


  • 2-s2.0-84870878619

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 2851

End Page


  • 2858

Volume


  • 404

Issue


  • 10

Place Of Publication


  • Germany

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, with 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 luminescence detector is studied. Its small size enables integration of the instrument into a portable measurement system. A systematic study of the system capabilities as a portable instrument was performed to optimize range, sensitivity, short term and long term stability, dynamic behaviour, effect of temperature and humidity, and temporal drift.

UOW Authors


  •   Perez De Vargas-Sansalvador, I. M. (external author)
  •   Fay, Cormac
  •   Fernandez-Ramos, M. D. (external author)
  •   Diamond, Dermot (external author)
  •   Benito-Lopez, Fernando (external author)
  •   Capitan-Vallvey, L. F. (external author)

Publication Date


  • 2012

Citation


  • Perez de Vargas-Sansalvador, I. M., Fay, C., Fernandez-Ramos, M. D., Diamond, D., Benito-Lopez, F. & Capitan-Vallvey, L. F. (2012). LED-LED portable oxygen gas sensor. Analytical and Bioanalytical Chemistry, 404 (10), 2851-2858.

Scopus Eid


  • 2-s2.0-84870878619

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 2851

End Page


  • 2858

Volume


  • 404

Issue


  • 10

Place Of Publication


  • Germany