基于棒吸附微提取方法的应用,用于尿液矩阵中基胺兴奋剂的兴奋剂控制
C V P Almeida1, N R Neng2, J M F Nogueira2
1Laboratório de Análises de Dopagem, Instituto Nacional de Saúde Doutor Ricardo Jorge IP, Av. Prof. Egas Moniz (Estádio Universitário), 1600-190 Lisboa, Portugal.
概括
棒吸附微提取 (BAμE) 提供了一种具有成本效益和环保的方法,用于检测尿液中的氨酸刺激剂. 这种技术通过简化样品准备和减少溶剂使用来增强兴奋剂控制分析.
科学领域:
- 分析化学 分析化学
- 在反兴奋剂控制中.
- 法医科学 法医科学 法医科学
背景情况:
- 兴奋剂控制实验室必须调整分析程序以符合世界反兴奋剂机构 (WADA) 的指导方针.
- 传统的样品制备方法,如液液提取,耗时,溶剂密集,成本高.
- 在反兴奋剂工作中需要有效和可持续的分析技术.
研究的目的:
- 引入棒吸附微提取 (BAμE) 作为一种用于兴奋剂控制的新型样品制备技术.
- 在尿液矩阵中定性确定六种氨酸兴奋剂 (AAs).
- 为了验证BAμE方法在常规反兴奋剂分析中的适用性.
主要方法:
- 使用混合模式逆相/强离子交换吸附剂 (P2) 开发和优化棒吸附微提取 (BAμE).
- 在尿液中分析了六种胺兴奋剂 (1,3-二甲基丁胺,1,4-二甲基胺,肝氨醇,异甲,八氨酸,图阿米诺胺).
- 气相色谱与质谱相结合,在衍生后在选择的离子监测模式 (GC-MS(SIM)) 中进行.
主要成果:
- 优化BAμE实现了目标AA的高恢复率,从48.7%到83.1%.
- 经过验证的方法证明了适当的识别极限 (5.0-35.0 ng/mL) 和广泛的线性动态范围 (5.0-200.0 ng/mL).
- 在真实水平尿样中成功检测和识别了AAs,证实了该方法的适用性.
结论:
- 条形吸附微提取 (BAμE) 是一种可行的,经济有效的,环保的替代方法,用于在兴奋剂控制中检测胺兴奋剂.
- 该方法需要最小的尿样体积 (1毫升),并且与传统技术相比,简化了样品的准备.
- BAμE在反兴奋剂和法医分析中为其他物质和复杂矩阵提供了显著的应用潜力.
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