微塑料与液中的重金属之间的相互作用:对垃圾填埋场稳定过程的影响
Jiabao Chen1, Lin Huo2, Ying Yuan3
1State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China.
Journal of hazardous materials
|September 14, 2024
概括
垃圾填埋场中的微塑料含有重金属,如 (Cr) 和 (As). 垃圾填埋场稳定影响了这些相互作用,较小的微塑料与Cr和As的相关性更强.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
背景情况:
- 垃圾填埋场释放微塑料和重金属,影响环境行为.
- 微塑料吸附重金属,使其在液中的命运复杂化.
- 垃圾填埋场稳定对微塑料和重金属相互作用的影响尚不清楚.
研究的目的:
- 为了调查北京垃圾填埋场泄漏物中的微塑料和重金属特性.
- 了解垃圾填埋场稳定对这些污染物的影响.
- 在稳定过程中探索微塑料和重金属之间的相关性.
主要方法:
- 从北京的10个垃圾填埋场抽取液样本.
- 量化微塑料的数量,大小和类型.
- 测量重金属度 (Cr,As等) 的方法 ) 的情况.
- 对微塑料和重金属相关性的统计分析.
主要成果:
- 平均微塑料丰富度为196.3件/L,主要是小型 (20-50微米) 和薄膜类型.
- (Cr) 和 (As) 是最常见的重金属.
- 随着垃圾填埋的稳定,微塑料的丰富性和聚合物多样性下降.
- 在微塑料和重金属之间发现了显著的抛物线相关性,Cr和As与较小的微塑料 (20-30微米) 有着强烈的联系.
结论:
- 垃圾填埋场稳定改变了微塑料与重金属的相互作用.
- Cr和As对稳定过程特别敏感.
- 这些发现为废物水管理和污染物控制提供了科学基础.
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