使用F核磁共振光谱学使用活性炭去除per-和多基物质 (PFAS) 的分析
G F Earl1, L A Stevens1, W Li1
1Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham Nottingham NG7 2RD UK.
RSC advances
|January 28, 2026
概括
这项研究评估了商业活性炭用于从水中去除有毒的和多基物质 (PFAS). 活性炭CAC-4显示出最佳性能,19F-NMR证明是一种有效的,低成本的检测方法.
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:
- 和多醇基物质 (PFAS) 是持久性,有毒的化学物质,与人类健康有害影响有关.
- 活性炭对于水处理中PFAS的去除至关重要,需要优质的煤炭和生物质衍生吸附剂.
- 目前的PFAS检测方法昂贵且耗时.
研究的目的:
- 描述四种商业活性炭 (CAC) 并评估它们的PFAS清除效率.
- 调查19F核磁共振 (19F-NMR) 用于PFAS检测和量化.
- 为了确定优质吸附剂和PFAS修复的成本有效的分析替代品.
主要方法:
- 四种商业活性炭 (CAC-1至CAC-4) 的化学/质地特性表征.
- 使用四种PFAS类型 (PFBS,PFHxA,PFOA,PFOS) 调查PFAS去除性能.
- 使用19F-NMR与内部标准检测和量化PFAS.
主要成果:
- 活性炭CAC-4表现出最高的PFAS去除效率,其次是CAC-3,CAC-2和CAC-1.
- CAC-4的优越性能归因于其高表面积,中等度和含氧的功能组.
- 19F-NMR有效量化了总的PFAS后处理与最小的样本准备,证明其作为一个低成本的分析工具的可行性.
结论:
- 商用活性炭CAC-4是一种高效的吸附剂,可以从水中去除各种PFAS化合物.
- 定量19F-NMR为选新型吸附材料提供了传统分析技术的实用,经济的替代方案.
- 优化活性炭和先进的分析方法对于解决广泛的PFAS污染至关重要.
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