Presence and quantification of the microplastics and bisphenol-A in sediments along the Guanabara Bay, Brazil

Microplastics (MP) and endocrine disruptors, such as bisphenol-A (BPA) have both become significant environmental concerns worldwide, although assessments in estuarine environments are still scarce. In this regard, Guanabara Bay is one of the most important Brazilian systems, displaying economic relevance, it has suffered increasing anthropogenic effects for decades. Thus, study aimed to assess occurrence MP BPA sediments system though stereomicroscope identification high-performance liquid chromatography. Both pollutants were detected all sediment samples. A total 3 11 particles (<5 mm) per 50 cm2 detected, higher than other studies worldwide. MPs categorized fibers fragments, mostly green, possibly from fisher rope net degradation. ranged 0.36 19.75 ng g-1, near Governador Island Rio de Janeiro harbor. Potential correlations between BPA, however, could not be determined. represent already highly impacted system, further paramount understand potential ecotoxicological hazards associated these pollutants.