在城市水域使用μ-FTIR和Py-GC-MS进行微塑料的比较分析:在阿姆斯特丹的一个案例研究
Feride Öykü Sefiloglu1, Cleo N Stratmann2, Marthinus Brits1
1Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands.
Environmental pollution (Barking, Essex : 1987)
|May 2, 2024
概括
这项研究比较了阿姆斯特丹运河中的微塑料 (MP) 量化方法. 微里叶变换红外成像和热解气体染色学质谱学显示了微塑料的可比质量度趋势.
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) 污染是淡水系统的一个全球性问题.
- 当前的MP分析往往侧重于粒子数量,低利用光谱方法进行质量估计.
- 准确的MP质量量定量对于了解环境影响至关重要.
研究的目的:
- 为了比较微福里埃变换红外 (μ-FTIR) 成像和热解气色谱-质谱法 (Py-GC-MS) 以识别和量化城市水中的微塑料.
- 评估这些技术在粒子数量和质量度测量方面的可比性.
- 调查阿姆斯特丹运河中的微塑料丰富度,考虑到位置和季节.
主要方法:
- 在阿姆斯特丹运河网络中进行了两次采样活动 (夏季和冬季).
- 一个现场体积减小收集了表面水中的微塑料 (10-300微米).
- 使用μ-FTIR成像和Py-GC-MS分析微塑料的颗粒数量和质量度.
主要成果:
- 微塑料度在16-107 MP/m3之间.
- 用μ-FTIR估计的质量度为2.0-789μg/m3,用Py-GC-MS估计的质量度为8.5-754μg/m3.
- 两种方法都显示了MP丰度的可比趋势,其中的变化归因于方法间的差异. 在市中心发现了更高的度,在高活动地区注意到季节性变化.
结论:
- μ-FTIR成像和Py-GC-MS为城市水中的微塑料质量度提供了可比的结果.
- 微塑料污染在城市中心较高,在人类活动较高的地区有季节性影响.
- 需要进一步的研究来完善和标准化微塑料质量量定量技术.
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