1. Titanium nanoparticles fate in small-sized watersheds under different land-uses
- Author
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Jia-Lan Wang, Enrica Alasonati, Marc F. Benedetti, Paola Fisicaro, Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire National de Métrologie et d’Essais (LNE), This project has been supported by Ile de France Region through the DIM Analytics programme (Convention ESPCI-RVT-IPGP-N◦ 2015–3). Part of this work was supported by grants from Region Ile-de-France R2DS and PIREN Seine programmes. Parts of this work were supported by IPGP multidisciplinary programme PARI, and by Paris–IdF region SESAME Grant no. 12015908., and ANR-18-IDEX-0001,Université de Paris,Université de Paris(2018)
- Subjects
Environmental Engineering ,010504 meteorology & atmospheric sciences ,Particle number ,Range (biology) ,Health, Toxicology and Mutagenesis ,Metal Nanoparticles ,chemistry.chemical_element ,010501 environmental sciences ,01 natural sciences ,Sp-ICPMS ,Nanoparticle ,Flux (metallurgy) ,Environmental Chemistry ,Mass concentration (chemistry) ,Land-use ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Titanium ,Agricultural catchment ,Land use ,15. Life on land ,Pollution ,Microscopy, Electron ,Fluxes ,chemistry ,13. Climate action ,Environmental chemistry ,Nanoparticles ,Environmental science ,Particle ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,[CHIM.OTHE]Chemical Sciences/Other - Abstract
International audience; 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 x 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.
- Published
- 2022