Publication Date:
2022-02-14
Description:
Microplastic presence in benthic marine systems is a widely discussed topic. The influence of the natural matrix on microplastic distribution within the sedimentary matrix is often overlooked. Marine sediments from the western inner Oslofjord, Norway, were investigated for temporal trends, with a particular focus on the relationship between sediment grain-sizes and microplastic distribution. Density separation, optical microscopy and chemical validation were used to categorize microplastics. Microplastic concentrations ranged from 0.02 to 1.71 MPs g − 1 dry weight (dw). Fibres were the most common (76%), followed by fragments and films (18%, 6%). Common polymers were polyesters (50%), polypropylene (18%), polymethylmethacrylate (9%), rayon and viscose (5%) and elastane (4%). Microplastics appear to accumulate preferentially according to their morphology and polymer type in certain sediment grain-sizes. Microplastics inputs to the Oslofjord appear to derive from a wastewater treatment plant in the vicinity. Although, the redistribution of microplastics within the fjord needs further investigation.
Description:
This project was supported by the Norwegian Institute for Water Research (NIVA) and the Erasmus+ Programme (EU).
Description:
Published
Description:
113076
Description:
7SR AMBIENTE – Servizi e ricerca per la società
Description:
JCR Journal
Keywords:
Accumulation
;
Plastic pollution
;
Canonical correspondence analysis (CCA)
;
Wastewater treatment plant (WWTP)
;
Sediment core
;
FT-IR
;
Microplastics
;
Marine sediments
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
