Photoacoustic spectroscopy of layered samples: Phase-detection technique

被引：12
|
作者：
Garcia-Quiroz, A
Vargas, H
Tomas, SA
Acosta-Avalos, D
Cruz-Orea, A
Albores, A
Valcarcel, JP
机构：
[1] IPN, CINVESTAV, Dept Fis, Mexico City 07738, DF, Mexico
[2] IPN, CINVESTAV, PMCATA, Mexico City 07738, DF, Mexico
[3] IPN, CINVESTAV, Secc Toxicol Ambiental, Dept Farmacol & Toxicol, Mexico City 07738, DF, Mexico
[4] Univ Surcolombiana, Neiva, Colombia
来源：
INSTRUMENTATION SCIENCE & TECHNOLOGY | 1998年 / 26卷 / 2-3期
关键词：
D O I：
10.1080/10739149808002696
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Depth profiles of double layer biological samples, obtained by photoacoustic 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. Using this method, we were able to monitor the phase shift between the cuticle and the pigment layers as a function of the time elapsed after herbicide spraying. The temporal changes occurring in lettuce leaves under the action of dehydration were also investigated.
引用
收藏
页码：227 / 239
页数：13
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