在源泉和经过处理的饮用水中评估微塑料消化方法
Yu Cheng1, Yuhao Wu1, Husein Almuhtaram1
1Department of Civil and Mineral Engineering, University of Toronto, 35 St George Street, Toronto, ON M5S 1A4, Canada.
The Science of the total environment
|July 2, 2025
概括
这项研究优化了饮用水中的微塑料分离. 芬顿的试剂氧化之后的酶性消化被证明是最有效的去除非塑料颗粒,改善分析.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 水的质量 水的质量
背景情况:
- 饮用水中的微塑料分析需要有效的隔离技术.
- 现有的分离微塑料的方法往往缺乏对饮用水矩阵的系统评估.
- 非塑料干扰阻碍了微塑料的准确量化和表征.
研究的目的:
- 系统地评估和比较七种不同的方法,从源水和经过处理的饮用水中分离微塑料 (>2微米).
- 确定一种最佳的方法来减少非塑料有机和无机颗粒.
- 开发和完善用于可再生微塑料分析的消化方法.
主要方法:
- 直接比较七种已确定的氧化,消化和酸化方法.
- 评估芬顿的试剂氧化与细胞酶和素酶性消化相结合.
- 通过酸化时间和减少反应时间,优化消化方法.
- 在各种表面水样本上验证改进的方法.
主要成果:
- 芬顿的试剂氧化之后的酶性消化显著改善了清洁过器面积,并减少了颗粒数量.
- 方法优化使铁沉物形成最小化,样品处理时间缩短.
- 这种精细的方法证明了在不同类型的地表水中具有适用性和可重复性.
结论:
- 优化的芬顿试剂氧化和酶性消化方法对于从饮用水中分离微塑料非常有效.
- 这种改进的方法为各种水源中微塑料的预分析提供了一种标准化的方法.
- 这些发现有助于使用光谱技术更准确地对微塑料进行表征.
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