Elemental and molecular profiling of licit, illicit, and niche tobacco

Quayle, Kim, Clemens, Graeme, Sorribes, Tamar Garcia, Kinvig, Hannah M., Stevenson, Paul G., Conlan, Xavier and Baker, Matthew J. 2016, Elemental and molecular profiling of licit, illicit, and niche tobacco, Forensic science international, vol. 266, pp. 549-554, doi: 10.1016/j.forsciint.2016.07.023.

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Title Elemental and molecular profiling of licit, illicit, and niche tobacco
Author(s) Quayle, KimORCID iD for Quayle, Kim orcid.org/0000-0002-1055-3093
Clemens, Graeme
Sorribes, Tamar Garcia
Kinvig, Hannah M.
Stevenson, Paul G.ORCID iD for Stevenson, Paul G. orcid.org/0000-0001-6780-6859
Conlan, XavierORCID iD for Conlan, Xavier orcid.org/0000-0003-0829-0551
Baker, Matthew J.
Journal name Forensic science international
Volume number 266
Start page 549
End page 554
Total pages 6
Publisher Elsevier
Place of publication Shannon, Ireland
Publication date 2016-09
ISSN 1872-6283
Keyword(s) tobacco
illicit tobacco
element analysis
Elemental Analysis
Summary The recognition of differences between regulated large-scale mass manufactured products and the uncontrolled cultivation of tobaccos for illicit purposes plays a significant role within identification of provenance. This research highlights X-ray fluorescence and Fourier transform infrared spectroscopy as useful analytical techniques for the rapid identification of tobacco samples of unknown provenance. Identification of key discriminative features within each technique allowed for the development of typical characteristic profiles for each type of tobacco. Analysis using X-ray fluorescence highlights chlorine, potassium, calcium and iron as key elemental indicators of tobacco provenance. Significant levels of chlorine seen within Snüs samples prompted attempts to visualise chlorine containing regions and structures within the sample. Scanning electron microscopy images showed crystalline structures visible within the Snüs tobacco, structures which Energy dispersive X-ray spectroscopy qualitatively confirmed to contain chlorine. Chloride levels within Snüs samples were quantified using ion chromatography with levels found to range between 0.87mgmL‾¹ and 1.28mg. Additionally, FTIR indicated that absorbances attributed to carbonyl stretching at 1050-1150cm‾¹, alkane bending at 1350-1480cm‾¹and amide I stretching at 1600-1700cm‾¹ highlighting a spectral fingerprint region that allowed for the clear differentiation between different types of tobaccos using PCA analysis, but was limited by differentiation between provenance of cigarettes and hand rolled tobacco. X-ray fluorescence and Fourier transform infrared spectroscopy yielded different information with regards tobacco discrimination and provenance, however both methods overall analysis time and cost reduced indicating usefulness as potential handheld analytical techniques in the field.
Language eng
DOI 10.1016/j.forsciint.2016.07.023
Field of Research 030606 Structural Chemistry and Spectroscopy
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier Ireland
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085571

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