Measurements on liquid solutions using low cost, low power, light emitting diode photo-acoustics

We have developed a low cost, low power, photo-acoustic cell using a light emitting diode (LED) light source with monotone modulation for the purpose of measuring concentrations of aqueous liquid solutions in a non-invasive manner. The apparatus is smaller and cheaper than a conventional instrument...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 214; no. 1; p. 012030
Main Authors Williams, K J, Wertheim, D F
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2010
Subjects
Acoustics
Light emitting diodes
Light sources
Low cost
Photoacoustic cells
Physics
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Summary:We have developed a low cost, low power, photo-acoustic cell using a light emitting diode (LED) light source with monotone modulation for the purpose of measuring concentrations of aqueous liquid solutions in a non-invasive manner. The apparatus is smaller and cheaper than a conventional instrument such as a photo-acoustic cell in conjunction with a spectrometer.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/214/1/012030