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Microplastic sequestration in saltmarsh sediments from Eastern Brazil
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Researchers characterized microplastic accumulation in saltmarsh sediments from Todos os Santos Bay, Brazil, finding high sequestration rates in vegetated coastal zones. The results highlight saltmarshes as important hotspots for microplastic deposition in tropical coastal environments.
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
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Microplastic sequestration in saltmarsh sediments from Eastern Brazil
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Researchers examined microplastic sequestration in saltmarsh sediments from Todos os Santos Bay in eastern Brazil, a bay subject to substantial industrial and urban inputs. Saltmarsh sediments accumulated high concentrations of microplastics, functioning as long-term sinks for plastic pollution in this coastal ecosystem.
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