Trace level detection and identification of tabun in aqueous media by derivatization and liquid chromatography tandem mass spectrometry analysis
作者:Moran Madmon、Avi Weissberg
DOI:10.1016/j.ijms.2020.116393
日期:2020.10
detection and identification of the G-nerve agent tabun (GA) was developed. 2-[(Dimethylamino)methyl]phenol (2-DMAMP), which was recently developed for the derivatization of GB, GD and GF, was also found to be efficient for the derivatization of GA. The optimized derivatization procedure in an aqueous medium was the addition of 2-DMAMP followed by 5 min of stirring at ambient temperature and subsequent
摘要 开发了一种用于检测和鉴定G神经毒剂塔崩(GA)的高灵敏度方法。2-[(二甲基氨基)甲基]苯酚 (2-DMAMP),最近开发用于衍生 GB、GD 和 GF,也被发现对 GA 的衍生化是有效的。在水性介质中优化的衍生化程序是添加 2-DMAMP,然后在环境温度下搅拌 5 分钟,然后进行 LC-ESI(+)-MS/MS 分析。衍生的 GA 比完整的 GA 更稳定,检测灵敏度高近两个数量级。其 ESI-MS/MS 谱图显示 m/z 242 和 m/z 214 处的两个主要产物离子。开发的方法比任何其他基于 LC-MS 或 GC-MS 的方法更灵敏,并清楚地展示了“冻结时钟”用于确定水性介质中的活性 GA,饮用水中的检测限 (LOD) 为 10 pg/mL。衍生化反应效率通过土壤、沥青、布料、胶木和油毡的水提取物加 GA 进行评估,发现与饮用水相似。该方法还被发现可用于提高 GA 家族其他成员