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<p>This article systematically reviews the presence of microplastics in rainfall, highlighting their global prevalence, even in remote areas, and summarizing the primary techniques used to study them. The review encompasses studies published up to January 2025, revealing that microplastics are transported in the troposphere and deposited through precipitation, with their dynamics influenced by wind and rainfall. The findings suggest that rainfall plays a significant role in removing microplastics from the troposphere to the surface, although concentrations can vary both within and between rainfall events. The effects of wind are more variable, as it can either disperse particles or transport them, potentially leading to fluctuations in microplastic concentrations. The predominant polymers identified in rainwater include polyethylene terephthalate (PET), polypropylene (PP), polyamide (PA), and polyethylene (PE), reflecting the widespread use of these materials in modern society. This review emphasizes the importance of meteorological factors in understanding the transport and deposition of microplastics in the environment.</p>

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Detection, characteristics, and some influencing factors of MPs in rainfall

  • 期刊论文

  • 发表日期：

    2025年3月28日

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  • Aldani Braz Carvalho,
  • Camila Novais Farias,
  • Pérola de Castro Vasconcellos,
  • Andreia Neves Fernandes,
  • Fernando de Sales,
  • Júlio Barboza Chiquetto,
  • Nádia Gilma Beserra de Lima,
  • Jakeline Baratto,
  • João Paulo Assis Gobo

摘要

This article systematically reviews the presence of microplastics in rainfall, highlighting their global prevalence, even in remote areas, and summarizing the primary techniques used to study them. The review encompasses studies published up to January 2025, revealing that microplastics are transported in the troposphere and deposited through precipitation, with their dynamics influenced by wind and rainfall. The findings suggest that rainfall plays a significant role in removing microplastics from the troposphere to the surface, although concentrations can vary both within and between rainfall events. The effects of wind are more variable, as it can either disperse particles or transport them, potentially leading to fluctuations in microplastic concentrations. The predominant polymers identified in rainwater include polyethylene terephthalate (PET), polypropylene (PP), polyamide (PA), and polyethylene (PE), reflecting the widespread use of these materials in modern society. This review emphasizes the importance of meteorological factors in understanding the transport and deposition of microplastics in the environment.