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Aging Characteristics and Adsorption Properties of Microplastics: Research Progress
Summary
Tiny plastic bits (microplastics) don't just sit unchanged in the environment, sunlight, weather, and other natural forces break them down over time, and this "aging" process actually makes them better at soaking up toxic substances like heavy metals. This review pulls together existing research to show that aged microplastics may pose a bigger contamination risk than fresh ones, which matters because these particles can end up in our water, food, and eventually our bodies. Understanding how this works helps scientists better predict the real-world risks microplastics pose to human health.
微塑料作为环境污染物的重要载体，对于重金属的迁移、转化和毒理的影响是不可忽视的，微塑料在环境中会受到老化作用，导致其物理结构或化学特性进一步改变，既而影响其在环境中的吸附行为，本文系统地介绍了微塑料在自然环境中的老化行为，并在此基础上总结了老化后微塑料对各类污染物的吸附特性变化，进一步探究微塑料老化后的研究方向，以便后期能更为全面地评估微塑料在环境中的风险，为学者们提供科学指导。As important carriers of environmental pollutants, microplastics play a significant role in the migration, transformation, and toxicological effects of heavy metals. Microplastics undergo aging processes in the environment, leading to changes in their physical structures and chemical properties, which in turn affect their adsorption behavior. This paper systematically reviews the aging behavior of microplastics in natural environments, summarizes the changes in the adsorption characteristics of various pollutants by aged microplastics, and further explores future research directions. The aim is to provide a more comprehensive assessment of the environmental risks posed by microplastics and to offer scientific guidance for researchers.