Titanium nanoparticles fate in small-sized watersheds under different land-uses

Jia-Lan Wang; Enrica Alasonati; Paola Fisicaro; Marc F Benedetti

doi:10.1016/j.jhazmat.2021.126695

Titanium nanoparticles fate in small-sized watersheds under different land-uses

J Hazard Mater. 2022 Jan 15:422:126695. doi: 10.1016/j.jhazmat.2021.126695. Epub 2021 Aug 11.

Authors

Jia-Lan Wang¹, Enrica Alasonati², Paola Fisicaro², Marc F Benedetti³

Affiliations

¹ Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France; Department of Biomedical and Inorganic Chemistry, Laboratoire National de Métrologie et d'Essais (LNE), 1 rue Gaston Boissier, Paris 75015, France.
² Department of Biomedical and Inorganic Chemistry, Laboratoire National de Métrologie et d'Essais (LNE), 1 rue Gaston Boissier, Paris 75015, France.
³ Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France. Electronic address: benedetti@ipgp.fr.

PMID: 34418834
DOI: 10.1016/j.jhazmat.2021.126695

Abstract

Surface waters from three catchments having contrasting land-uses (forested, agricultural, and urban) were sampled monthly and analysed for nanoparticulate titanium dioxide (NPs-TiO₂) by single particle ICPMS and electron microscopy. We report one-year of data for NPs-TiO₂ having average number and mass concentrations of 9.1 × 10⁸ NPs-TiO₂ particles L^-1 and 11 µg NPs-TiO₂ L^-1 respectively. An increase in concentration during warmer months is observed in the forested and agricultural catchments. Both concentrations of NPs-TiO₂ are within the range of recently reported values using similar analytical approaches. The positive correlations for NPs-TiO₂ mass concentration or particle number with the concentration of some trace elements and DOC in the forested and agricultural catchments suggest the detected NPs-TiO₂ in these two systems are mostly from geogenic origin. Additionally, microscopy imaging confirmed the presence of NPs in the three catchments. Furthermore, the land-area normalized annual flux of NPs-TiO₂ (1.65 kg TiO₂ year^-1 km^-2) was highest for the agricultural catchment, suggesting that agricultural practices have a different impact on the NPs-TiO₂ dynamics and exports than other land-uses (urban or forestry). A similar trend is also found by the reanalysis of recent literature data.

Keywords: Fluxes; Land-use; Nanoparticle; Sp-ICPMS; Titanium.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Metal Nanoparticles*
Microscopy, Electron
Nanoparticles*
Titanium

Substances

Titanium