与城市道路沉积的微塑料相关的发生和风险
Beibei He1, Chenhao Shi1, Bocheng Chen1
1College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
Journal of hazardous materials
|July 19, 2023
概括
城市道路沉积的微塑料 (MP) 根据土地使用和颗粒大小有很大差异. 在工业和住宅区确定了潜在环境风险的热点,突出了针对性缓解策略的需要.
科学领域:
- 环境科学 环境科学
- 城市生态城市生态学
- 微塑料污染 微塑料污染
背景情况:
- 了解城市道路沉积的微塑料 (MP) 对于评估环境风险至关重要.
- MP度和类型的变化受内在和外在因素的影响.
- 在道路上存放的MP在各种暴露场景中构成潜在风险.
研究的目的:
- 调查影响城市道路沉积MPs度和物种的因素.
- 分析MP,土地使用,沉积物颗粒大小和细尘之间的关系.
- 评估道路上放置的MP产生的潜在环境风险的空间变化.
主要方法:
- 量化道路沉积的MP,平均度在0.33至3.64gm-2之间.
- 对土地使用类型和沉积物颗粒大小分布的分析.
- 在MPs和微尘颗粒 (<150微米) 之间的相关性分析.
主要成果:
- 土地使用和沉积物颗粒大小显著影响MP的丰度.
- 聚乙烯 (PE),聚烯 (PP),聚烯 (PS) 和聚乙烯二甲 (PET) 是人类活动中常见的MP.
- MP主要来自轮胎磨损.
- 在MPs和微尘颗粒之间存在显著的相关性,表明高度亲和力.
- 议员的风险评分差异很大 (10至11000),其中工业,商业和住宅地区的热点.
结论:
- 城市道路沉积的MP大量存在,它们的分布与土地使用和颗粒特征有关.
- 轮胎磨损是MP的主要来源.
- 对于国会议员来说,高风险地区主要是混合工业和住宅区,需要集中管理.
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