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First Evidence of Microplastic in the Roots of Eichhornia Crassipes (mart.) Solms (1883) at the Delmiro Gouveia Paulo Afonso Reservoir – Ba - Submedio São Francisco
Summary
This Brazilian study is the first to document microplastics in the roots of water hyacinth (Eichhornia crassipes) in the Sao Francisco River basin, finding 211 microplastic particles in root samples across multiple collection months. Fibers were the dominant type in both plant roots and water samples, highlighting the plant's role in accumulating suspended microplastics.
The work aimed to analyze the presence of microplastics (MPs) in Eichhornia crassipes roots and in water samples, in order to understand the dynamics, adherence and influence on tilapiculture. Root and water collections were carried out in Oct and Dec/2021 and February, April, July and October/2022 at the Delmiro Gouveia Reservoir, close to a fish farm in Paulo Afonso -BA. A total of 228 MPs were identified in the water samples including the control point and 211 MPs in the root samples. In the months of April, February, July and October/2022 there was no collection due to the opening of the hydroelectric dam gates in the region. The frequency of occurrence varied with 41.89% items identified in the water samples, 45.88% in the control point water samples and 12.21% in the root samples and presented higher averages in the months of October and December/2021 and February/2022 with a significant difference between the months and points studied. The filament category was predominant in all samples. The work identified for the first time the presence of MP's in the roots of E. crassipes in the submiddle So Francisco and contributed to elucidating the adhesion of suspended solids in them.