Janzen K E, Walter L, Fernando A R
Royal Canadian Mounted Police Forensic Laboratory, Edmonton, Alberta.
J Forensic Sci. 1992 Mar;37(2):436-45.
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.
