DEVELOPMENT OF SIGNAL RECOVERING METHOD U SING LOCK-IN AMPLIFIER FOR PULSED-LASER EXCITED CAPILLARY VIBRATION

Authors
ODAKE T MANIWA S KITAMORI T SAWADA T
Citation
T. Odake et al., DEVELOPMENT OF SIGNAL RECOVERING METHOD U SING LOCK-IN AMPLIFIER FOR PULSED-LASER EXCITED CAPILLARY VIBRATION, Bunseki Kagaku, 42(12), 1993, pp. 200000167-200000171
Citations number
5
Categorie Soggetti
Chemistry Analytical
Journal title
Bunseki Kagaku → ACNP
ISSN journal
05251931
Volume
42
Issue
12
Year of publication
1993
Pages
200000167 - 200000171
Database
ISI
SICI code
0525-1931(1993)42:12<200000167:DOSRMU>2.0.ZU;2-V
Abstract
A series of excitation pulses was irradiated on a capillary, and a sta nding wave capillary vibration (CVL) was induced by using a pulse repe tition rate equal to the natural frequency of the capillary system. Th e amplitude of the standing CVL was recovered by a lock-in amplifier. This method was applied to detect CVL, which has been proposed as an u ltrasensitive detection method for capillary zone electrophoresis (CZE ). Three femtomole of phenylalanine was detected using a 30 mu m inner diameter capillary.