开发一种新的DGT被动采样仪,用于测量水生系统中的多环芳
Qiuyu Rong1, Yanying Li2, Jun Luo3
1Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
Journal of hazardous materials
|April 9, 2024
概括
一种使用薄膜 (DGT) 技术扩散梯度的新型被动采样器已被开发用于监测水中的多环芳 (PAHs). 这种创新方法在低水平上提供可靠的,时间集成的测量,改善环境风险评估.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 多环芳 (PAH) 是优先污染物,需要在水生系统中进行可靠的监测.
- 传统的PAH水样采集方法是劳动密集型的,容易出现错误.
- 需要改进在现场,时间整合的PAH监测方法.
研究的目的:
- 开发和验证一种新型的薄膜 (DGT) 散射梯度被动采样器,用于聚环芳 (PAHs).
- 设计和测试新的适用于疏水有机化合物的DGT持有装置.
- 为了评估分子印记聚合物 (MIP) 结合层用于PAH采样的性能.
主要方法:
- 开发了一种新的DGT被动采样仪,其中包含金属持有装置和MIP绑定层.
- 在各种环境条件 (pH,离子强度,溶解有机物) 中测试DGT采样器的性能.
- 在河水和废水中的实地试验,使用GC-MS或HPLC进行分析.
主要成果:
- 新型MIP-DGT采样器在最小的样本处理中证明了PAHs的有效预度.
- 采样器显示独立于pH值,离子强度和中等水平的溶解有机物质.
- 实地试验证实了在环境水平 (ng/L范围) 上可靠地监测不稳定的PAH.
结论:
- 开发的DGT被动采样仪是一个方便和可靠的工具,用于在各种水环境中对PAHs进行时间整合监测.
- 这代表了被动采样器的首次应用,用于准确,无校准测量水性有机污染物,如PAHs.
- 新的采样器将增强对PAH行为的理解,并改善环境风险评估和管理.
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