Figure 1.
Typical ATR-FTIR spectra of Methamphetamine, a) High concentration {78.6%} b) Low concentration {10.3% cut with MSM (Methylsulphonylmethane)}.
Figure 2.
HPCA loadings plot: component 1 versus component 2.
(Dotted triangle shows Methamphetamine concentration direction in scores plot).
Figure 3.
Methamphetamine Major Peaks PLS Regression.
Figure 4.
Methamphetamine HPLS Regression.
Figure 5.
Structures of the most commonly encountered ATS, a) Methamphetamine, b) Ecstasy (MDMA: 3, 4 methylenedioxymethamphetamine), c) Amphetamine.