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

Hargreaves, M. D. and Burnett, A. D. and Munshi, T. and Cunningham, J. E. and Linfield, E. H. and 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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