photoacoustic spectroscopy

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photoacoustic spectroscopy

chemistry

Also known as: optoacoustic spectroscopy

Learn about this topic in these articles:

chemical analysis

In chemical analysis: Ultraviolet-visible spectrophotometry
…the technique is known as photoacoustic, or optoacoustic, spectrometry. Photoacoustic spectrometers typically employ microphones or piezoelectric transducers as detectors. Pressure waves result when the analyte expands and contracts as it absorbs chopped electromagnetic radiation.
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