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用乙醇稀释的度测量方法,用于在合成样本中快速准确量化低密度微塑料

Xinxin Qin¹, Wenxi Teng², Xiang Zhang²

¹Ganzhou Key Laboratory of Basin Pollution Simulation and Control, Jiangxi University of Science and Technology, 1958 Ke-jia Road, Ganzhou, 341000, China; Jiangxi Provincial Key Laboratory of Environmental Geotechnology and Engineering Disaster Control, Jiangxi University of Science and Technology, 1958 Ke-jia Road, Ganzhou, 341000, China.

Analytica chimica acta

|September 14, 2023

概括

使用乙醇稀释的新型,经济高效的流测量方法可以准确量化水中的微塑料 (MP). 这种技术改善了聚烯和聚乙烯MP的悬浮和检测极限,显示了对现实世界环境监测的希望.

科学领域:

环境科学环境科学
分析化学分析化学

背景情况:

微塑料 (MP) 污染和相关的污染物在多孔介质中的运输是环境方面的重大问题.
准确量化MPs对于理解他们在实验室研究中的行为至关重要.

研究的目的:

开发一种经济的以乙醇稀释的流测量方法,用于量化聚烯 (PP) 和聚乙烯 (PE) 微塑料.
优化该方法以提高悬挂性能和检测极限.

主要方法:

开发了PP和PE微塑料的乙醇稀释度测量技术.
通过测量接触角度和溶液密度,研究了乙醇对微塑料悬浮的作用.
优化了乙醇/水的比率,并在各种度范围和环境条件下验证了该方法.

主要成果:

在低度和高度范围内建立了微塑料度和度之间的强有力的线性关系.
通过优化乙醇/水比率 (3:2对于PP, 4:1对于PE) 实现了出色的悬浮性能.
证明了高回收率 (±103%),低检测极限 (低至0.025毫克L-1),以及对不同溶液矩阵的良好耐受性 (DLVO能量障碍>20kT).

结论:

开发的乙醇稀释度测量方法是微塑料量化的一种具有成本效益和准确的工具.
该方法在真实水样中表现出稳定性和适用性,支持环境监测工作.

关键词:

在乙醇中稀释.微塑料是一种微塑料.量化量化量化量化流测量仪使用了流测量仪.

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