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Innovative overview of the occurrence, aging characteristics, and ecological toxicity of microplastics in environmental media
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This review summarizes existing research on where microplastics are found in the environment, how they age and break down, and their toxic effects on living organisms. The paper highlights that as microplastics weather in the environment through sunlight and chemical exposure, they become smaller and can carry other pollutants, potentially increasing their health risks. It also covers emerging strategies for detecting and removing microplastics.
Microplastics (MPs), pollutants detected at high frequency in the environment, can be served as carriers of many kinds of pollutants and have typical characteristics of environmental persistence and bioaccumulation. The potential risks of MPs ecological environment and health have been widely concerned by scholars and engineering practitioners. Previous reviews mostly focused on the pollution characteristics and ecological toxicity of MPs, but there were few reviews on MPs analysis methods, aging mechanisms and removal strategies. To address this issue, this review first summarizes the contamination characteristics of MPs in different environmental media, and then focuses on analyzing the detection methods and analyzing the aging mechanisms of MPs, which include physical aging and chemical aging. Further, the ecotoxicity of MPs to different organisms and the associated enhanced removal strategies are outlined. Finally, some unresolved research questions related to MPs are prospected. This review focuses on the ageing and ecotoxic behaviour of MPs and provides some theoretical references for the potential environmental risks of MPs and their deep control.
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