Real time quantitative colourimetric test for methamphetamine detection using digital and mobile phone technology  Aree Choodum, Kaewalee Parabun, Nantikan.

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Real time quantitative colourimetric test for methamphetamine detection using digital and mobile phone technology  Aree Choodum, Kaewalee Parabun, Nantikan Klawach, Niamh Nic Daeid, Proespichaya Kanatharana, Worawit Wongniramaikul  Forensic Science International  Volume 235, Pages 8-13 (February 2014) DOI: 10.1016/j.forsciint.2013.11.018 Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 1 Real time on-mobile color analysis system for methamphetamine detection. Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 2 Spectrophotometric detection (580nm) of Simon-Awe product from methamphetamine. Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 3 Relationship between intensity of each color and methamphetamine concentration (all were point-to-point lines, except linear portions which were regression lines). Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 4 Relationship between absorbance of each color and methamphetamine concentration. Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 5 Relationship between (a) total intensity (b) absorbance and methamphetamine concentration. Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 6 Relationship between blank subtracted RGB values and methamphetamine concentration (a) each individual intensity (b) absorbance (c) total intensity (d) total absorbance. Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

Fig. 7 Chromatogram of Yaba tablet (sample 3). Forensic Science International 2014 235, 8-13DOI: (10.1016/j.forsciint.2013.11.018) Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions

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