College of Resource Environment and Tourism, Capital Normal University, Beijing 10048, PR China.
College of Resource Environment and Tourism, Capital Normal University, Beijing 10048, PR China.
Ecotoxicol Environ Saf. 2024 Nov 1;286:117248. doi: 10.1016/j.ecoenv.2024.117248. Epub 2024 Oct 28.
The soil environment is a primary destination for contaminants such as microplastics (MPs) and heavy metals (HMs), which are frequently detected simultaneously. The long-term coexistence of MPs and HMs in the soil necessitates unavoidable interactions, affecting their environmental chemical behavior and bioavailability. These co-contaminants pose potential threats to soil organism growth and reproduction, crop productivity, food security, and may jeopardize human health via the food chain. This paper summarizes the sources and trends of MPs in the soil environment, along with the mechanisms and current research status of MP adsorption or desorption of HMs. Additionally, this paper reviews factors affecting HM adsorption on MPs, including MP properties, HM chemical properties, and other environmental factors. Lastly, the effects of MPs and HMs on soil ecology and human health are summarized. The interaction mechanisms and potential biological effects of their co-contamination require further exploration. Future research should delve deeper into the ecotoxic effects of MP-HM co-contamination at cellular and molecular levels, to provide a comprehensive reference for understanding the environmental behavior of their co-contamination in soil.
土壤环境是微塑料（MPs）和重金属（HMs）等污染物的主要归宿地，它们经常被同时检测到。MPs 和 HMs 在土壤中长期共存，不可避免地会发生相互作用，影响它们的环境化学行为和生物可利用性。这些共污染物对土壤生物的生长和繁殖、作物生产力、食品安全构成潜在威胁，并可能通过食物链危害人类健康。本文总结了土壤环境中 MPs 的来源和趋势，以及 MPs 吸附或解吸 HMs 的机制和当前研究状况。此外，本文还综述了影响 MPs 上 HM 吸附的因素，包括 MPs 的性质、HM 的化学性质和其他环境因素。最后，总结了 MPs 和 HMs 对土壤生态和人类健康的影响。需要进一步探讨它们共污染的相互作用机制和潜在的生物学效应。未来的研究应深入探究 MPs-HM 共污染在细胞和分子水平上的生态毒性效应，为了解土壤中它们共污染的环境行为提供全面的参考。
