Determination of lysergic acid diethylamide (LSD), iso-LSD, and N-demethyl-LSD in body fluids by gas chromatography/tandem mass spectrometry
作者:Chad C. Nelson、Rodger L. Foltz
DOI:10.1021/ac00038a014
日期:1992.7.15
acid diethylamide (LSD), iso-LSD, and N-demethyl-LSD by capillary chromatography/tandem mass spectrometry (GC/MS/MS) are presented. Several methods for derivatization, sample introduction, and ionization, in combination with mass spectrometry/mass spectrometry (MS/MS), have been evaluated for overall ionization efficiency and product-ion sensitivity and specificity. Fragmentation pathways derived from
介绍了通过毛细管色谱/串联质谱(GC / MS / MS)检测和定量麦角酰二乙酰胺(LSD),iso-LSD和N-demethyl-LSD的程序。已评估了几种衍生化,样品引入和电离的方法,并结合质谱/质谱(MS / MS)进行了整体电离效率以及产物离子敏感性和特异性的评估。已提出了质子化LSD的低能碰撞诱导解离(CID)光谱以及LSD的质子化三甲基甲硅烷基衍生物(LSD-TMS)和氘标记的LSD类似物的裂解途径。主要离解主要涉及酰胺和哌啶环部分,其中CH3自由基,CH3NH2,CH3NCH2,二乙胺,二乙基甲酰胺和N的损失,观察到来自MH +的N-二乙基丙烯酰胺。LSD,iso-LSD和N-demethyl-LSD的三甲基甲硅烷基(TMS)衍生物的质子化分子(MH +)的正离子氨化学电离和随后的MS / MS分析为鉴定这些化合物提供了高度的特异性在低pg / mL浓度的尿液或血液中。三氟乙