Optical sensing of low ethanol concentration via absorption rate in visible wavelength

Author

Saad, Hasnida ; Othman, Sufri ; Ali, M.T. ; Abd-Rahman, M. Kamil

Author_Institution

Fac. of Electr. Eng., UiTM, Shah Alam, Malaysia

fYear

2014

fDate

2-4 Sept. 2014

Firstpage

38

Lastpage

40

Abstract

This paper presents the rate of optical absorption in the visible wavelength region for low concentration of ethanol in water. Ethanol absorption rate was measured in neutral, acidic and alkaline medium of potassium permanganate (KMnO₄) dye. The absorption rate was measured for 0.01% to 1% ethanol. This non-contact optical system employs tungsten halogen light source and spectrometer from Ocean Optics. This method demonstrates a sensitivity of more than 0.01%; fast detection speed of 27s; and has potential for in situ measurement.

Keywords

chemical sensors; fibre optic sensors; organic compounds; visible spectrometers; KMnO₄; Ocean Optics; absorption rate; acidic medium; alkaline medium; detection speed; low ethanol concentration; neutral medium; optical sensing; potassium permanganate dye; sensitivity; spectrometer; tungsten halogen light source; visible wavelength; Absorption; Ethanol; Optical fiber sensors; Optical fibers; Optical variables measurement; Sea measurements; Absorption Rate; Ethanol Sensor; Optical Absorption; Optical Sensor; Potassium Permanganate;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics (ICP), 2014 IEEE 5th International Conference on

Conference_Location

Kuala Lumpur

Type

conf

DOI

10.1109/ICP.2014.7002304

Filename

7002304