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Sensitive Detection of Aromatic Molecules by Laser Photoacoustic Spectrometry: Signal Enhancement by Fluorescence Quencher

✍ Scribed by T. Ogawa; K. Ideta; T. Inoue

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
203 KB
Volume
49
Category
Article
ISSN
0026-265X

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✦ Synopsis

Highly sensitive detection of aromatic molecules has been investigated by pulsed laser excitation. A cylindrical cell surrounded by a piezoelectric transducer has improved the detection limit. Fluorescence quencher, (\mathrm{CH}_{3} \mathrm{NO}), increased the photoacoustic signal of perylene up to three times and the signal-to-noise ratio by about (50 %). Typical detection limits of pyrene and perylene were (0.4 \mathrm{ppb}) in hexane and (6.7 \mathrm{ppb}) in methanol with nitromethane, respectively. 1994 Academic Press, Inc.

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