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Marine & Wildlife
Nanoplastics
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A study of the adsorption of titanium dioxide and zinc oxide nanoparticles on polyethylene microplastics and their desorption in aquatic media
The Science of The Total Environment2023
35 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 50
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Barbara Klun,
Barbara Klun,
Barbara Klun,
Barbara Klun,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Barbara Klun,
Barbara Klun,
Barbara Klun,
Barbara Klun,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Gabriela Kalčíková
Ula Rozman,
Ula Rozman,
Ula Rozman,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Barbara Klun,
Barbara Klun,
Barbara Klun,
Barbara Klun,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Ula Rozman,
Barbara Klun,
Barbara Klun,
Barbara Klun,
Barbara Klun,
Gabriela Kalčíková
Ula Rozman,
Barbara Klun,
Gregor Marolt,
Gabriela Kalčíková
Ula Rozman,
Gabriela Kalčíková
Gregor Marolt,
Gabriela Kalčíková
Gregor Marolt,
Gregor Marolt,
Gabriela Kalčíková
Gregor Marolt,
Barbara Klun,
Ula Rozman,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Ula Rozman,
Gabriela Kalčíková
Gabriela Kalčíková
Gregor Marolt,
Ula Rozman,
Gregor Marolt,
Gregor Marolt,
Gabriela Kalčíková
Jernej Imperl,
Jernej Imperl,
Gabriela Kalčíková
Ula Rozman,
Jernej Imperl,
Gabriela Kalčíková
Gabriela Kalčíková
Ula Rozman,
Ula Rozman,
Ula Rozman,
Gabriela Kalčíková
Jernej Imperl,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gregor Marolt,
Gregor Marolt,
Ula Rozman,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gregor Marolt,
Gregor Marolt,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Barbara Klun,
Jernej Imperl,
Gregor Marolt,
Ula Rozman,
Gabriela Kalčíková
Gabriela Kalčíková
Ula Rozman,
Gregor Marolt,
Gregor Marolt,
Gregor Marolt,
Ula Rozman,
Barbara Klun,
Ula Rozman,
Ula Rozman,
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Gabriela Kalčíková
Summary
Researchers studied the adsorption and desorption behavior of titanium dioxide and zinc oxide nanoparticles on polyethylene microplastics in aquatic media, finding rapid nanoparticle uptake and pH-dependent release that could influence contaminant transport.
In this study, we investigated the interactions between titanium dioxide (nTiO<sub>2</sub>) and zinc oxide (nZnO) nanoparticles and polyethylene microplastics (MPs) with respect to their adsorption and subsequent desorption in aquatic media. Adsorption kinetic models revealed rapid adsorption of nZnO compared to nTiO<sub>2</sub>, while nTiO<sub>2</sub> was adsorbed to a greater extent - four times more nTiO<sub>2</sub> (67%) was adsorbed on MPs than nZnO (16%). The low adsorption of nZnO can be explained by the partial dissolution of zinc from nZnO in the form of Zn(II) and/or Zn(II) aqua-hydroxo complexes (e.g. [Zn(OH)]<sup>+</sup>, [Zn(OH)<sub>3</sub>]<sup>-</sup>, [Zn(OH)<sub>4</sub>]<sup>2-</sup>), which were not adsorbed on MPs. Adsorption isotherm models indicated that the adsorption process is controlled by physisorption for both nTiO<sub>2</sub> and nZnO. The desorption of nTiO<sub>2</sub> was low (up to 27%) and not pH dependent, and only nanoparticles were desorbed from the MPs surface. On the other hand, the desorption of nZnO was pH dependent; at a slightly acidic pH (pH = 6), 89% of the adsorbed zinc was desorbed from the MPs surface and the majority were in the form of nanoparticles; at a slightly alkaline pH (pH = 8.3), 72% of the zinc was desorbed, but the majority were in the soluble form of Zn(II) and/or Zn(II) aqua-hydroxo complexes. These results demonstrated the complexity and variability of interactions between MPs and metal engineered nanoparticles and contribute to a better understanding of their fate in the aquatic environment.