Relevance of Iron Oxyhydroxide and Pore Water Chemistry on the Mobility of Nanoplastic Particles in Water-Saturated Porous Media Environments

Effect of Agricultural Organic Inputs on Nanoplastics Transport in Saturated Goethite-Coated Porous Media: Particle Size Selectivity and Role of Dissolved Organic Matter

“…A previous study reported that high contents (15−45%) of Fe mineral caused greater retention of 50NPs at pH 5−9 than that in this study. 52 Due to the unsaturated coordination, GT easily coordinated with water and formed a hydroxylated surface after water dissociation. The surface hydroxyl group of GT could undergo proton migration, showing amphoteric oxidation characteristics and finally resulting in NPs adsorption.…”

Quantification of photooxidative defects in weathered microplastics using13C multiCP NMR spectroscopy

“…26,27 Additionally, the small particle sizes enable fast transport and thus a global distribution. 22,28–30…”

“…[17][18][19] Weathering gradually changes MP polymer chains to highly polar, heavily branched, mediumsized oligomers. 17 Polar and charged groups expressed on particle surfaces favour particle cell interactions and cellular responses, 20 as well as the formation of an ecocorona by adsorption of natural inorganic and organic colloidal particles 21,22 or by deposition of biolms due to microbe activity. 23,24 This in turn enhances the uptake by microorganisms.…”

“…26,27 Additionally, the small particle sizes enable fast transport and thus a global distribution. 22,[28][29][30] The underlying degradation mechanisms of commodity plastics are meanwhile well understood. 2,3,[17][18][19][31][32][33] PE, PP and PS consist of an aliphatic backbone and aliphatic or aromatic side chains.…”

Tracking Microplastics Across the Streambed Interface: Using Laser‐Induced‐Fluorescence to Quantitatively Analyze Microplastic Transport in an Experimental Flume

“…The mobility and retention of MPs in fluvial systems depends on catchment properties (Baldwin et al., 2016), hydrodynamic characteristics (Haberstroh et al., 2020), physicochemical interactions (Lu, Gilfedder, Peng, Niu, & Frei, 2021; Lu, Gilfedder, Peng, Peiffer, et al., 2021) and particle properties (Waldschläger & Schüttrumpf, 2019a). MP accumulation has been observed in low flow regimes such as lakes and reservoirs (Tibbetts et al., 2018) as well as behind flow obstacles (Los Santos et al., 2021; Watkins et al., 2019) and morphological streambed features such as ripples and dunes (Mani et al., 2019), constituting either temporary or permanent retention areas (Horton & Dixon, 2018).…”