Todos os Santos Bay (BTS), situated in the Recôncavo Baiano micro-region, stands as one of Brazil's largest bays. BTS encompasses human occupation and a significant industrial park. These various anthropogenic influences impact the region's salt marshes and mangrove ecosystems, with one notable concern being the presence of plastics and microplastics (MPs). This study aims to determine the concentrations and historical trends of plastic pollution in sedimentary samples in the Caboto saltmarsh (38°30'13Ẅ 12°43'52S̈ and 38°30'6Ẅ 12°43'50S̈). Two cores ( 24 cm) were collected using a PVC pipe. The cores were sectioned in the field at 1 cm intervals from the top to a depth of 10 cm and at 2 cm intervals to the bottom. Plastic fractions were isolated using a Sediment-Microplastic Isolation (SMI) unit, employing density separation (NaCl, 1.2 g cm-3) and digestion of the organic matter (35 Also see: https://micro2024.sciencesconf.org/546230/document

In MICRO 2024: Plastic Pollution from MACRO to nano