亚特兰大城市用水中的极地污染物的定性和定量分析
Francesc Labad1, Sandra Pérez1
1IDAEA-CSIC ONHEALTH Research Group Jordi Girona 18-26, Barcelona, 08034, Spain.
Analytica chimica acta
|July 23, 2025
概括
这项研究引入了一种集成的液体色谱-离子移动性光谱-质谱法,用于检测城市水中的具有挑战性的极性污染物. 新的方法成功地在河流和自来水样本中识别了许多极地污染物,包括PFAS.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 频谱测量是一种光谱测量.
背景情况:
- 传统的分析技术由于有机物质积累不良和分析困难,与极性强的物质作斗争.
- 高极性化合物 (Log Dow < 0) 和非常移动的化合物通常在传统的液态染色学 (LC) 方法中保持不良.
研究的目的:
- 开发和验证一个综合分析方法,用于分离,检测和量化城市水中的具有挑战性的极性污染物.
- 评估移动波离子移动性光谱 (TWIMS) 作为LC-HRMS的补充技术,用于分析极性和移动化合物的实用性.
主要方法:
- 一种综合分析方法,结合了液态色谱 (LC),移动波离子运动谱 (TWIMS) 和高分辨率质谱 (HRMS).
- 使用TWIMS来确定小型有机分子的碰撞截面 (CCS) 值,建立有效分离的门.
- 美国亚特兰大地表水和自来水样本的分析.
主要成果:
- 超过50%的向污染物被检测在城市水母中.
- 在LC保留不足的情况下,TWIMS有效地基于碰撞横截面 (CCS) 值来解决化合物.
- 在城市水中经常观察到纳-1-硫酸,尼古丁和和多基物质 (PFAS) 等化合物.
结论:
- 开发的方法提高了复杂的环境样本中小,极极性分子的分辨率和识别.
- 离子移动性光谱 (IMS) 作为一种有价值的补充工具,用于环境分析的传统LC-MS工作流程.
- 在城市水中检测到极性物质的存在需要明智的环境监测和风险评估策略.
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