废水中的污染物的自动分析使用大气压气体染色学-配对四极质谱仪与机器人自动采样器和固相微型提取
Dnyaneshwar Shinde1, Urvikkumar Dhagat1, Vijayakumar Murugan1
1RASID Laboratory of Abu Dhabi Quality & Conformity Council (ADQCC) & M42 Environmental Sciences, Abu Dhabi, United Arab Emirates.
Journal of separation science
|November 25, 2025
概括
这项研究引入了一种改进的气色谱-质谱法,用于分析废水中的有机污染物. 新技术提供了更高的选择性和更简单的样本准备,使其成为一个实用和可持续的替代方案.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 质谱测量质量谱测量
背景情况:
- 对于有机污染物分析的传统气体染色体质谱法 (GC-MS) 方法往往缺乏选择性,需要大量的样本准备.
- 使用电子冲击 (EI) 电离和液体-液体或固体相提取 (LLE或SPE) 的现有技术在实现准确和高效的污染物检测方面存在重大挑战.
- 对于复杂的环境样本,如废水,需要更有选择性,更高效,更环保的分析方法.
研究的目的:
- 调查气压GC-MS/MS与机器人工具更换系统和固相微提取 (SPME) 箭头相结合的适合性,用于分析有机污染物.
- 评估该方法对各种化合物的性能,包括挥发性有机化合物,多环芳 (PAH) 和有毒分析剂.
- 评估该方法的绿色性和实用性,用于常规废水分析.
主要方法:
- 使用大气压气体染色学-并联质谱学 (GC-MS/MS) 结合双头机器人工具更换 (DH-RTC) 系统和SPME箭头.
- 采用了一种涂有divinylbenzene-polydimethylsiloxane (DVB-PDMS) 的SPME箭头进行样本提取和分析.
- 在八种多类化合物和优先污染物 (美国环保署625.1/2016) 上测试了该方法,包括添加盐和不添加盐的优化,以及使用内部标准 (IS).
主要成果:
- 对于初始测试化合物,SPME箭头方法显示可接受的日内精度 (<10%) 和日间精度 (10.54-12.45%).
- 添加盐显著提高了28个分析对象的反应 (1.14到40.53倍),尽管最佳条件在分析对象之间有所不同.
- 优化的方法,使用高沸化合物的内部标准,实现了可接受的确定系数 (r2),回收率和相对标准偏差 (RSD),评估表明了环境可持续性和实用性.
结论:
- 大气压GC-MS/MS与DH-RTC和SPME箭头为废水中的有机污染物分析提供了选择性,高效和实用的替代方案.
- 该方法在广泛的分析物中表现出良好的精度和准确性,包括PAH和二氧化等具有挑战性的化合物.
- 该方法被证实是环境可持续的,与传统方法相比,它提供了更绿色,更有效的分析解决方案.
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