Blar i NIVA Open Access Archive på forfatter "Okoffo, Elvis D."
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Airborne emissions of microplastic fibres from domestic laundry dryers
O'Brien, Stacey; Okoffo, Elvis D.; O'Brien, Jake W.; Ribeiro, Francisca; Wang, Xianyu; Wright, Stephanie L.; Samanipour, Saer; Rauert, Cassandra; Yessenia Alajo Toapanta, Tania; Albarracin, Rizsa; Thomas, Kevin V (Journal article; Peer reviewed, 2020)An emission source of microplastics into the environment is laundering synthetic textiles and clothing. Mechanical drying as a pathway for emitting microplastics, however, is poorly understood. In this study, emissions of ... -
Challenges with Quantifying Tire Road Wear Particles: Recognizing the Need for Further Refinement of the ISO Technical Specification
Rauert, Cassandra; Rødland, Elisabeth S; Okoffo, Elvis D.; Reid, Malcolm J; Meland, Sondre; Thomas, Kevin V (Peer reviewed; Journal article, 2021)Environmental monitoring data for tire road wear particles are vastly limited compared to those for other microplastics, primarily due to analytical challenges with quantification. Recently, two ISO technical specifications ... -
Identification and quantification of selected plastics in biosolids by pressurized liquid extraction combined with double-shot pyrolysis gas chromatography–mass spectrometry
Okoffo, Elvis D.; Ribeiro, Francisca; O'Brien, Jake; O'Brien, Stacey; Tscharke, Benjamin; Gallen, Michael; Samanipour, Saer; Mueller, Jochen F.; Thomas, Kevin V (Peer reviewed; Journal article, 2020)The identification and quantification of selected plastics (polystyrene (PS), polycarbonate (PC), poly-(methyl methacrylate) (PMMA), polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE) and polyvinyl ... -
A novel method for the quantification of tire and polymer-modified bitumen particles in environmental samples by pyrolysis gas chromatography mass spectroscopy
Rødland, Elisabeth Strandbråten; Samanipour, Saer; Rauert, Cassandra; Okoffo, Elvis D.; Reid, Malcolm James; Heier, Lene S; Lind, Ole Christian; Thomas, Kevin V; Meland, Sondre (Peer reviewed; Journal article, 2021)Tire and road wear particles may constitute the largest source of microplastic particles into the environment. Quantification of these particles are associated with large uncertainties which are in part due to inadequate ... -
Occurrence of tire and road wear particles in urban and peri-urban snowbanks, and their potential environmental implications
Rødland, Elisabeth Strandbråten; Lind, Ole Christian; Reid, Malcolm James; Heier, Lene Sørlie; Okoffo, Elvis D.; Rauert, Cassandra; Thomas, Kevin V; Meland, Sondre (Peer reviewed; Journal article, 2022)According to estimates put forward in multiple studies, tire and road wear particles are one of the largest sources to microplastic contamination in the environment. There are large uncertainties associated with local ... -
Plastics in biosolids from 1950 to 2016: A function of global plastic production and consumption
Okoffo, Elvis D.; Donner, Erica; McGrath, Steve P.; Tscharke, Benjamin J.; O'Brien, Jake W.; O'Brien, Stacey; Ribeiro, Francisca; Burrows, Stephen D.; Toapanta, Tania; Rauert, Cassandra; Samanipour, Saer; Mueller, Jochen F.; Thomas, Kevin V (Peer reviewed; Journal article, 2021)Plastics are ubiquitous contaminants that leak into the environment from multiple pathways including the use of treated sewage sludge (biosolids). Seven common plastics (polymers) were quantified in the solid fraction of ... -
Road de-icing salt: Assessment of a potential new source and pathway of microplastics particles from roads
Rødland, Elisabeth Strandbråten; Okoffo, Elvis D.; Rauert, Cassandra; Heier, Lene Sørlie; Lind, Ole Christian; Reid, Malcolm James; Thomas, Kevin V; Meland, Sondre (Peer reviewed; Journal article, 2020)Roads are estimated to be the largest source of microplastic particles in the environment, through release of particles from tires, road markings and polymer-modified bitumen. These are all released through the wear and ...