Comparison of near infrared laser excitation wavelengths and its influence on the interrogation of seized drugs-of-abuse by Raman spectroscopy

Hargreaves, M. D., Burnett, A. D., Munshi, T. , Cunningham, J. E., Linfield, E. H., Davies, A. G. and Edwards, H. G. M. (2009) Comparison of near infrared laser excitation wavelengths and its influence on the interrogation of seized drugs-of-abuse by Raman spectroscopy. Journal of Raman Spectroscopy, 40 (12). pp. 1974-1983. ISSN 0377-0486

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Item Type:Article
Item Status:Live Archive

Abstract

The laser excitation wavelength is an important parameter in obtaining Raman spectra from drugs-of-abuse. This article compares the effect of near infrared wavelengths, 785 nm, using both benchtop and portable instrumentation and benchtop 1064 nm on the Raman spectra of seized drugs-of-abuse, including cocaine hydrochloride, cocaine freebase (crack), methylenedioxymethamphetamine ('ecstasy'), amphetamine, diamorphine (heroin) and cannabis. The significant benefit of using 1064 nm for the interrogation of this type of sample is highlighted. © 2009 John Wiley & Sons, Ltd.

Keywords:Raman spectroscopy, Drugs of abuse, Laser excitation wavelength, Forensic science, Principle component analysis
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:22367
Deposited On:01 Mar 2016 15:56

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