评估冰岛土壤中的微塑料污染:来自偏远,农业和城市环境的见解
Nanna D R Klemmensen1, María Sobrino Blanco2, Jes Vollertsen1
1Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Øst, Denmark.
The Science of the total environment
|November 3, 2024
概括
微塑料 (MP) 污染甚至在偏远的土壤中也存在,其较高度与增加的人类活动有关. 这项研究分析了冰岛的MP,揭示了偏远地区的聚碎片.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MP) 污染是一个普遍存在的全球问题,影响着各种生态系统.
- 关于在遥远的陆地环境中MP积累的数据有限.
- 了解原始地区的MP分布对于评估广泛的污染至关重要.
研究的目的:
- 量化冰岛西部偏远土壤中的微塑料丰富度.
- 将偏远土壤中的MP水平与农业和城市参考地点进行比较.
- 描述在偏远土壤中发现的MP类型,大小和形状.
主要方法:
- 使用先进技术从土壤样本中提取和量化微塑料.
- 分析MP类型,尺寸 (中位数为67微米) 和形状.
- 在偏远,农业和城市土壤环境中比较MP度.
- 调查MP负载和土壤参数 (含水量,散装密度,颗粒大小) 之间的相关性.
主要成果:
- 在所有调查的土壤样本中检测到微塑料.
- 偏远的土壤表现出最低的MP数量 (857 ± 561 kg-1) 和质量 (64.37 ± 47.96 μg kg-1).
- 城市土壤的MP度显著更高 (26,206 ± 25,345 公斤-1; 2175 ± 1385 微克公斤-1).
- 在偏远的土壤样本中,聚片段是占主导地位的MP类型.
- 在偏远土壤中,MP的丰富度和土壤物理参数之间没有发现显著的相关性.
结论:
- 人类活动与土壤中微塑料度增加直接相关.
- 遥远的生态系统对微塑料污染并没有免疫力.
- 轻质聚片段是偏远土壤中MP污染的重要组成部分.
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