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Comparison analysis of illicit cocaine samples
K E Janzen1, L Walter, A R Fernando
1Royal Canadian Mounted Police Forensic Laboratory, Edmonton, Alberta.
Journal of Forensic Sciences
|March 1, 1992
Abstract:
A rapid method for comparison analysis of illicit cocaine samples has been developed. The raw data are obtained by capillary gas chromatography using a nitrogen-phosphorus detector. The area ratios of four alkaloids (tropacocaine, norcocaine, cis-cinnamoylcocaine, and trans-cinnamoylcocaine) to cocaine are calculated for each sample. These ratios are compiled in a computer database which allows easy comparison of samples and makes possible reliable conclusions regarding their commonality of origin.