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Forensic Analysis of Marijuana: Approaches to Establishing Belonging to Previously Separated Plant Mass

https://doi.org/10.30764/1819-2785-2024-4-40-53

Abstract

The article presents the results of the studies of dried and crushed marijuana using nearinfrared spectroscopy and spore-pollen analysis for solving an expert task of establishing the affiliation to previously separated plant masses. The recording of near-infrared spectra of expert samples has been carried out. The possibility of interpreting spectral data using discriminant analysis of projections on latent structures is shown. The taxonomic composition of 8 435 pollen grains and spores has been determined, as well as the quantitative content of each taxon.

 According to the results of the conducted research, it was concluded that the application of a complex of independent and complementary methods allows to obtain the necessary and sufficient number of matching signs that can be recognized as unique for identification. The proposed research scheme can be also applied to other narcotics of plant origin. 

About the Authors

A. N. Khokh
State Institution Scientific and Practical Center of the State Forensic Examination Committee of the Republic of Belarus
Belarus

Khokh Anna Nikolaevna – Head of the Laboratory
of Materials, Substances and Products Research of
the Scientific Department of Technical and Special
Studies of the Scientific and Practical Center of
the State Forensic Examination Committee of the
Republic of Belarus

Minsk 220114



P. S. Voskanyan
“National Bureau of Expertises” State non-commercial organization (SNCO) of the National Academy of Sciences of the Republic of Armenia
Armenia

Voskanyan Patvakan Stepanovich – Candidate
of Chemistry, Deputy Director for Scientific Work

Yerevan 0004

 



A. A. Petrosyan
“National Bureau of Expertises” State non-commercial organization (SNCO) of the National Academy of Sciences of the Republic of Armenia
Armenia

Petrosyan Anna Araikovna – Head of the Soil and
Biological Expertises Department of the “National
Bureau of Expertises” 

Yerevan 0004



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For citations:


Khokh A.N., Voskanyan P.S., Petrosyan A.A. Forensic Analysis of Marijuana: Approaches to Establishing Belonging to Previously Separated Plant Mass. Theory and Practice of Forensic Science. 2024;19(4):40-53. (In Russ.) https://doi.org/10.30764/1819-2785-2024-4-40-53

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