Skip Navigation

This dataset is under embargo until 2025-03-21. This landing page will show up in searches.
How to Download

FRDR offers multiple ways to download datasets. Learn more in our documentation.

Investigation of polyethylene terephthalate (PET) and polyamide (PA) microplastic degradation in situ in stormwater pond sediments

Description: Microplastic accumulation in the environment, especially in bodies of water and sediment is a well known concern. Stormwater ponds act as microplastic sinks and draw pollutants from urban and industrial wastewater before it enters oceans or lakes. This results in high levels of microplastics remaining in stormwater pond sediment. The degradation potential of two vastly produced polymers, polyethylene terephthalate (PET) and polyamide (PA) in sediment was determined over the course of 14 months. Pore water chemistry data was collected concurrently with measuring plastic mass loss. High levels of pollutants, such as fluoride, chloride and sulphate were found. Both polymers increased in mass for the first 6 months, due to water absorption. At 14 months, PET had degraded 0.22% and PA had a net positive mass but had decreased water absorption. The obtained results highlight the lack of degradation of plastics in stormwater pond sediment and suggest lifespans are longer than estimated.
Authors: Griffiths, Erin; University of Waterloo; ORCID iD 0009-0002-5435-4392
Slowinski, Stephanie; University of Waterloo; ORCID iD 0000-0001-5090-441X
Rezanezhad, Fereidoun; University of Waterloo; ORCID iD 0000-0002-9608-8005
Van Cappellen, Philippe; University of Waterloo; ORCID iD 0000-0001-5476-0820
Keywords: Polyamide
Polyethylene terephthalate
Stormwater Pond
microplastic degradation
Field of Research: 
Earth and related environmental sciences
Other earth and related environmental sciences
Earth system sciences
Publication Date: 2025-03-21
Publisher: Federated Research Data Repository / dépôt fédéré de données de recherche
Funder: Natural Sciences and Engineering Research Council; Microplastics Fingerprinting at the watershed scale: from sources to receivers; ALLRP 558435-20
Canada First Research Excellence Fund; Global Water Futures
Related Identifiers: 
This dataset is a supplement to
Geographic Coverage: 
Place Name
University of Waterloo
Province /
Province / Territory
Geographic Point: 

Files in Dataset 
The list of files is not currently shown

Access to this dataset is subject to the following terms:
Creative Commons Attribution 4.0 International (CC BY 4.0)
Griffiths, E., Slowinski, S., Rezanezhad, F., Van Cappellen, P. (2025). Investigation of polyethylene terephthalate (PET) and polyamide (PA) microplastic degradation in situ in stormwater pond sediments. Federated Research Data Repository.