在韩国首尔安阳溪沿线的各种土地使用类型中,城市土壤微塑料的表征
Ntegang Venant Atem1, Jin-Yong Lee2, Rogers Wainkwa Chia1,3
1Department of Geology, Kangwon National University, Chuncheon, 24341, Republic of Korea.
Environmental geochemistry and health
|August 16, 2025
概括
微塑料 (MP) 污染在城市土壤中普遍存在,与学校相比,在住宅区和公园中发现的度更高. 土地使用显著影响MP粒子大小分布,碎片是最常见的形状.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 聚合物科学 聚合物科学
背景情况:
- 微塑料 (MP) 在土壤环境中越来越普遍.
- 国会议员可以对土壤的特性产生负面影响,例如pH值和孔隙结构.
- 关于MPs在城市河流相邻土壤中的空间分布的研究有限.
研究的目的:
- 研究MP在城市土壤中的发生,特征和分布.
- 为了比较不同土地使用类型 (高中,公园游乐场,住宅区) 沿着首尔安阳溪的MP污染.
- 为了确定土地使用类型对MP特征的影响.
主要方法:
- 从三个土地使用类型的12个地点收集了土壤样本.
- 样品经过预处理并使用福里埃变换红外光谱法 (FTIR) 进行分析.
- 分析了MP度,形状,颜色,尺寸分布和聚合物类型.
主要成果:
- 根据土地使用类型,MP度的差异很大,住宅区 (179-2006个项目/千克) 和公园 (129-5083个项目/千克) 的度高于高中 (62-824个项目/千克).
- 碎片是占主导地位的MP形状,自然颜色是最常见的.
- 聚烯 (PP) 是最常见的聚合物,土地使用类型显著影响了MP粒子大小分布 (p=0.009).
结论:
- 城市土壤,特别是靠近溪流的住宅和公园区,是微塑料的重要沉积点.
- 土地使用类型是影响土壤中微塑料的特性,特别是颗粒大小的关键因素.
- 这些来源包括合成织品,塑料废物,合成草和退化的游乐场设备.
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