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                                            m/z : 146
                                            m/z : 205                                   8 : 15 PCN
                                       100  m/z : 240
                                            m/z : 285
                                        80
                                                          2 : 52 PCBN
                                        60

                                        40

                                        20

                                         0
                                                        100            200            300
                                            m/z : 146
                                            m/z : 205
                                            m/z : 240
                                            m/z : 285
                                        25

                                        20
                                                                                             PCN
                                                                                             8 : 16
                                        15

                                        10


                                         5

                                         0
                                                          100            200            300
                                    Figure 2.9  LC/APCI/MS chromatogram of psilocybine (PCBN) and psilocine
                                    (PCN), 50 ng each (upper picture) and chromatogram of the extract of “herbal
                                    honey” (lower picture). (From Bogusz M.J., Maier R.D., Schäfer A.T., and Erkens
                                    M., Honey with Psilocybe mushrooms: a revival of a very old preparation on the
                                    drug market? Int. J. Legal Med. 111, 147, 1998. © Springer-Verlag, with permission.)

                                    chloroform–isopropanol (95:5) at pH 9. The drugs were separated on an
                                    octyl column in ACN–ammonium formate–formic acid. Protonated molec-
                                    ular ions and one fragment for each substance were monitored using
                                    ESI/MS/MS. The quantitation was done using deuterated internal standards.
                                    The limits of quantitation were 10 mg/l for opiates and 5 mg/l for cocaine and
                                    were higher than those reported after solid phase extraction.
                                                   125
                                       Mortier et al.  stressed the importance of proper sample preparation
                                    for ESI/LC/MS/MS determination of drugs of abuse in saliva. Amphetamines


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