开发一种结合μ-FTIR和μ-拉曼分析的多光谱方法,用于在环境和生物样本中检测微塑料的一站式检测
Zhichun Zhang1, Yang Geng1, Wei Zhou2
1Centers for Water and Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai 200032, China; School of Public Health, Fudan University, Shanghai 200032, China.
The Science of the total environment
|February 1, 2024
概括
使用化基质的新型多光谱法显著改善了空气,水和呼吸中的微塑料 (MP) 检测. 这种方法提高了检测率,并降低了与传统单光谱法相比的成本.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 目前的微塑料 (MP) 分析技术在检测极限,空间分辨率,成本和时间方面面临限制.
- 单一光谱法可能低估了微塑料的流行,特别是较小和有色颗粒.
研究的目的:
- 开发一种新的,具有成本效益和高效的多光谱检测微塑料的方法.
- 为了评估化作为微塑料分析基质的性能.
- 评估开发方法在现实环境和生物样本中的适用性.
主要方法:
- 结合微里叶变换红外线 (μ-FTIR) 和微拉曼光谱,用于同时分析.
- 使用化作为基质,取代传统的过膜.
- 分析了尖刺样品,室内空气,瓶装水和人类呼出的气息.
主要成果:
- 化基板表现出优异的光谱性能和更广泛的波数范围,用于μ-FTIR和μ-拉曼.
- 与单独的μ-Raman相比,多光谱法在室内空气中增加了30.4%,在瓶装水中增加了17.1%,在呼出的呼吸中增加了38.4%.
- 拟议的方法具有成本效益 (至少2.49倍便宜),并且由于基板可重复使用,对环境友好.
结论:
- 开发的多光谱法为微塑料检测提供了更全面,更准确的方法.
- 低估了微塑料暴露,特别是有色和小颗粒 (<50微米),是显著的单一光谱学.
- 可重复使用的化基板为微塑料分析提供了可持续和经济的替代方案.
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