关于城市雪中的微塑料 (MP) 和微 (MR) 的性质和来源
Fatemeh Ranjdoost1, Sajjad Abbasi2, Mahdi Asadi-Ghalhari3
1Student of Research Committee, Qom University of Medical Sciences, Qom, Iran; Research Center for Environmental Pollutants, Department of Environmental Health Engineering, Faculty of Health, Qom University of Medical Sciences, Qom, Iran.
Journal of environmental management
|October 15, 2024
概括
微塑料和微污染了伊朗的降雪,主要来自当地人类活动. 黑色颗粒占主导地位,发现了常见的聚合物,突显了需要进一步研究健康和生态系统影响的必要性.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 聚合物科学 聚合物科学
背景情况:
- 微塑料 (MP) 和微 (MR) 污染是一个日益严重的全球问题.
- 降雪可以作为大气污染物的重要沉积介质,包括微塑料.
- 了解降雪中的MP和MR的来源和特征对于评估环境污染至关重要.
研究的目的:
- 在伊朗中部 (Qom) 的降雪中描述微塑料 (MP) 和微 (MR).
- 为了确定检测到的MP和MR的物理特性 (颜色,尺寸,形状) 和化学成分.
- 识别导致降雪中的PM污染的来源 (本地与远程).
主要方法:
- 立体显微镜被用来评估物理特征,如厚度,光泽度,硬度和热针反应.
- 为了追踪污染源,使用了HYSPLIT轨迹和末端微塑料混合模型.
- 在收集的雪样上进行了聚合物鉴定.
主要成果:
- 平均丰度为23.8 MP/L和1.26 MR/L (或30.7 MP/m2和1.58 MR/m2).这些均度均为23.8 MP/L和1.26 MR/L (或30.7 MP/m2和1.58 MR/m2).
- 黑人议员最常见 (63.8%),其次是红色和蓝色; 71.6%的议员是250-500微米.
- 识别的聚合物包括PET,尼龙,粘合物,PP,PE,PS和PVC;90%的风源来自当地.
结论:
- 人类活动在科姆市是降雪中微塑料污染的主要来源.
- 描述的MP和MR代表了研究区域的重要大气污染物.
- 进一步的研究对于评估这些发现对生态和人类健康的影响至关重要.
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