对于敏感的LC-ESI-MS检测不和硫末降解产品的简单衍生
Yulin Zhou1, Bo Chen2, Qiao Lv2
1School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan, 643000, P. R. China.
Analytical and bioanalytical chemistry
|February 14, 2026
概括
一种新的衍生方法提高了硫末 (HD) 降解产物的检测. 这种技术可以提高对2-HVS和DVS等关键化学标记物的敏感性,有助于"化学武器公约"验证.
科学领域:
- 分析化学 分析化学
- 检测化学武器的检测器
- 环境监测 环境监测
背景情况:
- 硫 (HD) 的降解会产生不和产物,如2-乙硫化物 (2-HVS) 和二乙硫化物 (DVS).
- 这些产品是根据"禁止化学武器公约" (CWC) 认证的关键标志物.
- 通过LC-ESI-MS对2-HVS和DVS进行直接分析是具有挑战性的,因为它们的极性低,挥发性高,电离效率差.
研究的目的:
- 开发一种简单高效的衍生方法,用于敏感检测HD降解产物.
- 克服与2-HVS和DVS低极性,高挥发性和低效电离相关的分析挑战.
- 建立一个定量LC-ESI-MS方法用于HD验证.
主要方法:
- 使用二四甲酸 (IPy2BF4) 的衍生方法被用于引入永久正电荷.
- 液体染色学-电子喷雾电离源质谱法 (LC-ESI-MS) 用于分析.
- 在全扫描和并行反应监测 (PRM) 模式下使用高分辨率质谱仪进行结构确认.
主要成果:
- 衍生方法显著改善了ESI-MS信号,并在5分钟内完成.
- 建立了一种定量方法,其线性范围为0.100-300 ng/mL,在MRM模式下检测极限 (LOD) 为0.0100 ng/mL.
- 在的土壤,水和能力测试样本中成功检测了DVS和2-HVS,证明了该方法的适用性.
结论:
- 开发的四度化衍生策略提供了一种新而敏感的分析技术,用于检测不和的HD降解产物.
- 这种方法对于CWC验证是有效的,使得HD存在的可靠识别成为可能.
- 衍生方法也成功地应用于氧化不和降解产物,如二维尼尔硫氧化物 (DVSO) 和二维尼尔硫 (DVSO2).
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