State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China; The Research Center of Soil and Water Conservation and Ecological Environment, CAS and MOE, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, China; Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan, China.
Sci Total Environ. 2024 Mar 25;918:170281. doi: 10.1016/j.scitotenv.2024.170281. Epub 2024 Jan 24.
Microplastics (MPs) and heavy metals (HMs) in soil contamination are considered an emerging global problem that poses environmental and health risks. However, their interaction and potential biological effects remain unclear. Here, we reviewed the interaction of MPs with HMs in soil, including its mechanisms, influencing factors and biological effects. Specifically, the interactions between HMs and MPs mainly involve sorption and desorption. The type, aging, concentration, size of MPs, and the physicochemical properties of HMs and soil have significant impacts on the interaction. In particular, MP aging affects specific surface areas and functional groups. Due to the small size and resistance to decomposition characteristics of MPs, they are easily transported through the food chain and exhibit combined biological effects with HMs on soil organisms, thus accumulating in the human body. To comprehensively understand the effect of MPs and HMs in soil, we propose combining traditional experiments with emerging technologies and encouraging more coordinated efforts.
土壤中微塑料（MPs）和重金属（HMs）污染被认为是一个新兴的全球性问题，对环境和健康构成了威胁。然而，它们的相互作用和潜在的生物学效应尚不清楚。在这里，我们综述了土壤中 MPs 与 HMs 的相互作用，包括其机制、影响因素和生物学效应。具体来说，HMs 和 MPs 之间的相互作用主要涉及吸附和解吸。MPs 的类型、老化、浓度、大小，以及 HMs 和土壤的物理化学性质对相互作用有显著影响。特别是 MP 老化会影响比表面积和官能团。由于 MPs 具有尺寸小和抗分解的特点，它们很容易通过食物链进行迁移，并与 HMs 对土壤生物产生联合的生物学效应，从而在人体内积累。为了全面了解土壤中 MPs 和 HMs 的影响，我们建议将传统实验与新兴技术相结合，并鼓励更多的协调努力。
