用于从环境样本中有效提取p-phenylenediamine抗氧化剂及其衍生子的水友性共价有机框架
Zhaoyu Qiao1, Ganbing Zhang2, Shenghuai Hou1
1State Key Laboratory of Green Pesticide, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China.
Journal of hazardous materials
|November 23, 2025
概括
新的水友性共价有机框架 (H-COFs) 有效地从水中提取轮胎污染物,p-phenylenediamines (PPDs) 和PPD衍生的 (PPDQs). 这使得能够对这些新出现的污染物进行敏感的检测和环境风险评估.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 轮胎中的p-phenylenediamines (PPDs) 和它们的转化产品 (PPDQs) 是新兴的环境污染物.
- 了解它们的环境命运受到水分析有效分析方法缺乏的阻碍.
研究的目的:
- 合成新的水友性共价有机框架 (H-COFs) 来有效地从水环境中提取PPD和PPDQ.
- 开发一种敏感的分析方法来量化环境水样中的PPD和PPDQ.
- 调查这些轮胎衍生的污染物的环境发生和行为.
主要方法:
- 通过将基组纳入有序的COF框架,合成三种H-COF.
- 描述H-COF的特性,包括水友性和吸附动力学.
- 开发一种分散型固相提取 (d-SPE) 与高性能液体染色学-并联质谱学 (HPLC-MS/MS) 结合使用最佳H-COF (TP-DHBD-COF) 的开发.
- 密度函数理论 (DFT) 计算以阐明吸附机制.
主要成果:
- 对于6PPD和6PPDQ,TP-DHBD-COF表现出优异的水友性和快速吸附动力学 (10分钟),具有高吸附能力 (223-244毫克/克).
- 多种相互作用,包括水友性,结合和π-π相互作用,协同增强吸附.
- 开发的d-SPE-HPLC-MS/MS方法实现了低检测极限 (0.2-1.5 pg/mL),宽线性范围,高丰富系数 (16-67),以及良好的回收率 (95.8%-108.9%).
- 对长江水样的分析揭示了八种PPD和PPDQ的存在,为它们的环境分布提供了洞察力.
结论:
- 功能化H-COF,特别是TP-DHBD-COF,是有效的吸附剂,用于轮胎衍生的污染物.
- 开发的分析策略允许在环境矩阵中选择性和敏感地确定PPD和PPDQ.
- 这项研究推进了COF吸附剂设计,并为评估新出现的污染物的环境命运和风险提供了关键工具.
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