典型来源对半干旱城市河流表面水中的微塑料的贡献
Zheng Liu1, Ying Bai2, Xiaojiong Zhao2
1School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, China; Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, Lanzhou City University, Lanzhou 730070, China.
Journal of hazardous materials
|August 22, 2024
概括
城市河流是微塑料污染的重要来源. 这项研究发现排水沟和大气沉积物对黄河的微塑料污染有很大贡献,强调需要注意这些来源.
科学领域:
- 环境科学 环境科学
- 水的质量 水的质量
- 污染研究 污染研究
背景情况:
- 城市地区被认为是河流系统中微塑料污染的主要贡献者.
- 了解微塑料的来源和分布对于有效的环境管理至关重要.
研究的目的:
- 为了研究微塑料在黄河兰州区的地表水中的时空分布.
- 确定和量化典型来源对该半干旱地区微塑料污染的贡献.
主要方法:
- 在黄河的地表水中采样和分析微塑料.
- 量化微塑料度,每日量流量和质量流量.
- 识别微塑料类型 (纤维,碎片) 和聚合物组成 (PET,聚胺,PP,PE).
主要成果:
- 平均微塑料度为0.98颗粒子L−1,每日量流量为3.63 × 109 p d−1和质量流量为95.38 kg d−1.
- 由PET,聚胺,聚烯和聚乙烯组成的纤维和碎片占主导地位.
- 在住宅区和旅游区确定了微塑料污染热点,空间分布与人为因素相关,时间分布与降水季节性相关.
结论:
- 排水沟是黄河地表水中微塑料的主要来源.
- 大气沉积也对城市河流中的微塑料污染作出了相当大的直接贡献.
- 从大气沉积中获得的微塑料的贡献在城市河流管理策略中需要得到重大关注.
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