相关实验视频

Updated: Jan 8, 2026

Separation and Identification of Conventional Microplastics from Farmland Soils

Separation and Identification of Conventional Microplastics from Farmland Soils

Published on: March 21, 2025

大气中的微塑料在中国西北部河谷的来源和分布通过土地使用

Yingquan Li¹, Wanting Yang², Baowei Zhao²

¹School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China; Gansu Province Dust Control and Environmental Friendliness Technology Innovation Center, Lanzhou, Gansu 730070, PR China; Gansu Province Ecological Environmental Protection Materials Engineering Laboratory, Lanzhou, Gansu 730070, PR China.

Journal of hazardous materials

|December 14, 2025

概括

悬浮大气微塑料 (SAMP) 在干旱的兰州构成吸入风险. 居民区的SAMP度最高,碎片占主导地位,凸显了区域监测的必要性.

科学领域:

环境科学环境科学
大气化学大气化学
毒理学毒理学毒理学

背景情况:

悬浮大气微塑料 (SAMP) 是一个新兴的吸入风险,特别是在干旱地区.
在中国西北部河流谷中, SAMP 的污染模式和排放来源仍然不太清楚.

研究的目的:

在秋季期间,量化兰州不同土地使用类型的SAMP丰度和特征.
为了确定主导的SAMP类型,聚合物组成和潜在的排放驱动因素.
评估生态风险并确定研究区域中SAMP的来源.

主要方法:

在八种土地使用类型中进行活跃空气采样.
使用激光直接红外光谱 (LDIR) 进行聚合物识别的微塑料的表征.
空气质量轨迹建模以推断污染源.

主要成果:

平均SAMP丰度为4.5n/m3,其中住宅区的度最高 (9.68n/m3).
大小为25-50微米的微塑料占主导地位 (48.21%),主要是碎片 (71.18%).
烯酸共聚合物,聚乙烯和聚是普遍存在的聚合物,根据土地用途而有所不同. 生态风险一般较低 (RI<150),受聚合物毒性的影响.
轨迹建模表明了当地和远程运输来源.

结论:

这项研究为兰州的秋季SAMP提供了关键的基线,利用积极采样和LDIR分析.
调查结果强调了当地排放和远程运输对干旱环境中的大气微塑料污染的重大贡献.
强调迫切需要加强干旱地区的区域颗粒物监测和源控制战略.

关键词:

土地使用类型土地使用类型聚合物组成的聚合物组成.河流谷地河流谷地悬浮大气微塑料 (SAMPs) 是一种微塑料.交通运输交通运输交通运输交通运输

更多相关视频

Sampling and Identification of Microplastics in Groundwater

Sampling and Identification of Microplastics in Groundwater

Published on: November 7, 2025

Quantification of Polybutylene Adipate Terephthalate-based Micro- and Nano-plastics from Soil Using Proton Nuclear Magnetic Resonance Spectroscopy

Quantification of Polybutylene Adipate Terephthalate-based Micro- and Nano-plastics from Soil Using Proton Nuclear Magnetic Resonance Spectroscopy

Published on: June 6, 2025

相关概念视频

Environmental Applications of Microorganisms

Environmental Applications of Microorganisms

Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...