Simultaneous Determination of Methamphetamine and Its Isomer N-Isopropylbenzylamine in Forensic Samples by Using a Modified LC-ESI-MS/MS Method

Figure 5

MRM chromatograms by LC-ESI-MS for detection of MA and N-IBA. (a) Blank. (b) Standard of MA. (c) Standard of N-IBA. (d) Mix-standard of MA and N-IBA (N-IBA standard at concentration of 9.14 ng/mL was mixed with MA standard at concentration of 10.27 ng/mL at equal volume ratio). (e) Actual forensic sample, SUM-1.