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Microplastics in the Aquatic Environment: Occurrence, Persistence, Analysis, and Human Exposure
Summary
This review synthesizes global research on microplastic occurrence in aquatic environments, from rivers and lakes to wastewater and seafood, and examines how these particles eventually reach humans. Researchers found that microplastics are now ubiquitous in freshwater and marine systems, with trophic transfer and biomagnification serving as key routes of human exposure. The study highlights the need for standardized sampling and analysis methods to enable better comparison across studies and more accurate risk assessment.
Microplastics (MP) have recently been considered as emerging contaminants in the water environment. In the last number of years, the number of studies on MP has grown quickly due to the increasing consciousness of the potential risks for human health related to MP exposure. The present review article discusses scientific literature regarding MP occurrence and accumulation on the aquatic compartment (river, lake, wastewater, seafood), the analytical methods used to assess their concentration, their fate and transport to humans, and delineates the urgent areas for future research. To better analogize literature data regarding MP occurrence in the aquatic compartment we subdivided papers based on sampling, analytical methods, and concentration units with the aim to help the reader identify the similarities and differences of the considered research papers, thus making the comparison of literature data easier and the individuation of the most relevant articles for the reader’s interests faster. Furthermore, we argued about several ways for MP transport to humans, highlighting some gaps in analytical methods based on the reviewed publications. We suggest improving studies on developing standardized protocols to collect, process, and analyze samples.
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