PHOTOACOUSTIC-SPECTROSCOPY OF LAYERED SAMPLES - PHASE-DETECTION TECHNIQUE

Authors
GARCIAQUIROZ A VARGAS H TOMAS SA ACOSTAAVALOS D CRUZOREA A ALBORES A VALCARCEL JP
Citation
A. Garciaquiroz et al., PHOTOACOUSTIC-SPECTROSCOPY OF LAYERED SAMPLES - PHASE-DETECTION TECHNIQUE, Instrumentation science & technology, 26(2-3), 1998, pp. 227-239
Citations number
15
Categorie Soggetti
Instument & Instrumentation","Chemistry Analytical
Journal title
Instrumentation science & technology → ACNP
ISSN journal
10739149
Volume
26
Issue
2-3
Year of publication
1998
Pages
227 - 239
Database
ISI
SICI code
1073-9149(1998)26:2-3<227:POLS-P>2.0.ZU;2-3
Abstract
Depth profiles of double layer biological samples, obtained by photoac oustic spectroscopy, have been studied using the phase-resolved method . The application of the method was demonstrated by insulating out the spectra of the cuticle and the pigment layers of a lettuce leaf. Usin g this method, we were able to monitor the phase shift between the cut icle and the pigment layers as a function of the time elapsed after he rbicide spraying. The temporal changes occurring in lettuce leaves und er the action of dehydration were also investigated.