Packed column chromatography, high-resolution gas-chromatography and high pressure liquid chromatography in comparison for the analysis of cannabis constituents |
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| Authors: | I Barni Comparini F Centini |
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| Institution: | Institute of Forensic Medicine, Second Chair, University of Siena, Via Laterino 8, 53100 Siena Italy |
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| Abstract: | The identification and the quantitative estimation of cannabis constituents is important for forensic purposes. High resolution gas-chromatography gives better results than gas-liquid chromatography with packed columns, as it shows a better resolution and higher number of constituents. Different quantitative values were found with the two chromatographic procedures. High-pressure liquid chromatography revealed the presence of cannabinoid acids in fresh cut influorescences of cannabis plants. The ratio acid/neutral cannabinoid may be useful in supplying information about the age of the cannabis preparations. |
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| Keywords: | Narcotics Cannabis constituents Chromatographic methods Quantitative analysis Cannabinoid acids |
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