Microplastic Contamination in Water and Sediments of the Middle Tocantins River, Brazilian Amazon Region: Abundance, Characterization, and Spatial Distribution
Microplastic (MP) contamination is a growing environmental concern in freshwater ecosystems, yet large Neotropical rivers remain understudied. This study investigated the occurrence, abundance, and spatial distribution of MPs in water and sediment samples from the middle Tocantins River, near Imperatriz, Maranhão, Braz...