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dc.contributor.authorMengistu, Demmelash
dc.contributor.authorHeistad, Arve
dc.contributor.authorCoutris, Claire
dc.date.accessioned2021-11-23T14:21:21Z
dc.date.available2021-11-23T14:21:21Z
dc.date.created2021-01-19T18:27:10Z
dc.date.issued2021
dc.identifier.issn0048-9697
dc.identifier.urihttps://hdl.handle.net/11250/2831063
dc.description.abstractWhile tire wear and tear is known to be a major source of microplastics in the environment, its monitoring is still hampered by the lack of analytical methods able to provide concentrations in environmental matrices. Tirewear particles (TWP) present in road runoff enter the drainage system through gully pots, built to prevent sediment deposition in the drainage system, and eventually protect downstream receiving waters. The aim of this study was to detect and quantify TWP in gully pot sediments, by using a novel method combining Simultaneous Thermal Analysis (STA), Fourier Transform Infrared (FTIR) spectroscopy and Parallel Factor Analysis (PARAFAC). The method was applied to samples from five sites in Southern Norway, characterized by different traffic densities and patterns. The method involved no sample pretreatment, the whole sediment samplewas submitted to thermal decomposition in STA, and gases generated during pyrolysis were continuously transferred to FTIR. The FTIR data were arranged in a trilinearmulti-way dataset (samples × IR spectra wavenumber × pyrolysis temperature) and then analyzed by PARAFAC. The results showed that TWP concentrations in gully pots varied greatly across sites, ranging frombelow1 mgTWP/g sediment in streetswith the lowest traffic densities, to 150 mgTWP/g sediment at themost trafficked study site. The results also indicated that other traffic conditions, such as driving patterns influence TWP concentrations. Finally, by enabling quantification of TWP in gully pot sediments, the approach presented here supports environmental monitoring of TWP and safe disposal of gully pot sediments, which is critical for environmental pollution management.
dc.language.isoeng
dc.relation.urihttps://doi.org/10.1016/j.scitotenv.2020.144785
dc.titleTire wear particles concentrations in gully pot sediments
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersion
dc.source.volume769
dc.source.journalScience of the Total Environment
dc.identifier.doihttps://doi.org/10.1016/j.scitotenv.2020.144785
dc.identifier.cristin1874751
dc.relation.projectNorges forskningsråd: 194051
dc.relation.projectNorges forskningsråd: 272946
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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