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在垃圾填埋污水中识别微塑料:使用基于焦平面阵列 (FPA) 的里埃变换红外 (FTIR) 成像,低估了微小的微塑料

Shijie Bian¹, Timing Jiang¹, Jingwei Yan¹

¹Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China; Hubei Provincial Engineering Laboratory for Solid Waste Treatment Disposal and Recycling, Wuhan 430074, China; Hubei Provincial Research Center of Water Quality Safety and Water Pollution Control Engineering Technology, Huazhong University of Science and Technology, Wuhan 430074, China.

Journal of environmental sciences (China)

|March 1, 2026

概括

准确量化垃圾填埋污水中的微小微塑料 (MP) 是一个挑战. 焦平面阵列-里叶变换红外线 (FPA-FTIR) 成像在检测MP时比减弱总反射率-里叶变换红外线 (ATR-FTIR) 更有效.

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:

垃圾填埋场是环境微塑料的主要来源.
准确识别和量化垃圾填埋污水中微小的MP (10-100微米) 是一个重大挑战.
了解液中的MP行为对于评估环境运输至关重要.

研究的目的:

为了比较调查从运行和关闭的垃圾填埋场泄漏的MPs的识别和量化.
评估ATR-FTIR和FPA-FTIR成像技术的效率,以检测微小的MP.
为了确定遍布中国的垃圾填埋场排泄物中的MPs的数量,形态和影响因素.

主要方法:

对减弱总反射率-里叶变换红外线 (ATR-FTIR) 和基于焦平面阵列的微型里叶变换红外线 (FPA-FTIR) 成像进行比较分析.
在中国的13个垃圾填埋场使用FPA-FTIR测定出液中的MP.
分析MP的丰度,形态和与垃圾填埋场年龄和运营条件的相关性.

主要成果:

FPA-FTIR检测到MP的度比ATR-FTIR高两倍,这表明小型MP的效率更高.
液中的MP主要由高密度工程塑料 (90%) 的白色碎片组成.
随着垃圾填埋场的年龄和运营状态,MP的丰富程度有很大变化,在运营垃圾填埋场中达到15年左右的峰值,在封闭的垃圾填埋场中随着关闭年龄而下降.

结论:

FPA-FTIR成像是一种更有效的方法,用于量化垃圾填埋场液中的微小MP.
垃圾填埋场的运营条件和年龄显著影响了MP的数量,而不是形态.
这项研究为了解从垃圾填埋场到液中的MP迁移提供了关键数据.

关键词:

已关闭的垃圾填埋场在FPA-FTIR成像系统中使用.填埋场的年龄填埋场的年龄微塑料是一种微塑料.运营垃圾填埋场的运营

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