通过对CO2有反应的可切换的基于同质液体-液体微提取的深度欧特克溶剂的同质液体-液体微提取方法确定水中的多二
Jiaqin Jiang1, Lipeng Liu2, Lingqi Shen1
1College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Journal of chromatography. A
|December 10, 2024
概括
一种新的绿色方法使用可切换的深溶性溶剂从水中提取16种多二 (PCB). 这种环保技术为环境样本中的PCB分析提供了一种方便而准确的方法.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 绿色化学 绿色化学
背景情况:
- 多双 (PCB) 是持久性有机污染物,需要敏感的检测方法.
- 传统的提取溶剂带来环境和健康风险.
- 开发环保的提取技术对于环境监测至关重要.
研究的目的:
- 开发和验证一种同质液体-液体微提取 (HLLME) 方法,用于分析水样中的16种PCB.
- 使用一种新型的可响应二氧化碳的可切换深度性溶剂 (SDES) 作为环保的提取剂.
- 将SDES-HLLME与气体染色学三重四极联质谱学 (GC-MS/MS) 结合起来,以提高灵敏度和选择性.
主要方法:
- 均质的液体-液体微提取 (HLLME) 使用可切换的由单乙醇胺 (HBA) 和3-甲基 (HBD) 组成的深度环氧化溶剂 (SDES).
- 优化SDES体积,旋转时间,二氧化碳泡时间,盐度和离心参数.
- 使用气体染色学三重四极联质谱法 (GC-MS/MS) 分析了16个PCB.
主要成果:
- 采用40.0μL SDES,40s旋转,2分钟CO2泡,5.0%盐和3分钟以5000rpm离心实现了最佳的提取.
- 该方法证明了广泛的线性范围 (0.1-300 ng·mL-1) 与低检测极限 (0.003-0.096 ng·mL-1) 和定量 (0.009-0.321 ng·mL-1).
- 相对标准偏差 (RSD) 始终低于7.98%,表明精度良好.
- 在真实环境水样中,PCB的回收率得到了令人满意的结果.
结论:
- 开发的SDES-HLLME-GC-MS/MS方法是一种绿色,方便和准确的方法来分析水中的PCB.
- 在微提取技术中,SDES为传统有机溶剂提供了一种有效且对环境无害的替代品.
- 这项研究提出了一个有前途的新策略,用于环境矩阵中的污染物微量分析.
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