Flow and fate of silver nanoparticles in small French catchments under different land-uses: The first one-year study

Abstract

This study focused on surface waters from three small creeks, within the Seine River watershed, which are characterized by different land-uses, namely forested, agricultural and urban. Silver nanoparticles (Ag-NPs) in these waters were detected and quantified by single-particle ICPMS during one-year of monthly sampling. Their temporal and spatial variations were investigated. Ag-NPs, in the three types of surface water, were found to range from 1.5 x10 7 to 2.3 x 10 9 particles L-1 and from 0.4 to 28.3 ng L-1 at number and mass concentrations, respectively. These values are in consistent with the very few previous studies. In addition, the role of factors driving process and potential sources are discussed with correlations between Ag-NPs concentrations and biogeochemical parameters, like dissolved organic carbon concentration and divalent cations concentrations. For the forested watershed NOM controls the stability (number and mass) of the Ag-NPs as recently observed in the field in lake water in Germany. In the case of the agricultural and urban watersheds major cations such as Ca would control the number and mass of Ag-NPs. Dilution processes are rejected as conductivity and Clions do not show significant correlations with Ag-NPs or other major geochemical parameters. The specific exportation rates of Ag-NPs for artificial, agricultural and forested areas were calculated based on the monthly data for the full year and are equal to 5.5 ± 3.0, 0.5 ± 0.3 and 0.2 ± 0.2 gy-1 km-2 , respectively. These data suggest a constant release of Ag-NPs from consumer products into freshwaters in artificial areas, for instance, from textiles, washing machines, domestic tap-water filters, outdoor paints. These first data of Ag-NPs fluxes in surface waters of France enlarge the very limited database of field measurements. Moreover, for the first time, the influence of time, landuse and aquatic geochemistry parameters on Ag-NPs in real natural water samples is reported. It is also helpful to further understand the fate and the process of Ag-NPs in natural waters, as well as to the ecotoxicity studies in real-world environment.

Comparison of biogenic silver nanoparticles formed by Momordica charantia and Psidium guajava leaf extract and antifungal evaluation

“…However, silver has been considered as a metal possessing least toxicity even in the accumulation state [31]. In spite of that, the rapid development of silver nanoparticles led emerging concerns related to nano-sized silver toxicity on ecosystem and humans [32]. In case of using AgNPs for agricultural applications, AgNPs will accumulated on soil and/or in sludge that might exhibit the bioactivities in next crops [33].…”

“…In case of using AgNPs for agricultural applications, AgNPs will accumulated on soil and/or in sludge that might exhibit the bioactivities in next crops [33]. However, the transport and fate of AgNPs are complicated to fully understand [32,33], it might be leaked into water. In addition, the useful species might be influenced by silver nanoparticles, also the Ag + resistance might happen.…”

Detection of nanoparticles by single-particle ICP-MS with complete transport efficiency through direct nebulization at few-microlitres-per-minute uptake rates

“…µDG) [14]. Matrix-matching the dissolved sensitivity calibration appears to successfully correct this underestimation [16,33], as the change in sensitivity due to the matrix is then taken into account. In our case, based on Equation 3 and the cubic-root relationship between diameter and sensitivity, the sensitivity (from dissolved calibration) should be 4.2% lower (i.e.…”

Occurrence and Origins of Cerium Dioxide and Titanium Dioxide Nanoparticles in the Loire River (France) by Single Particle ICP-MS and FEG-SEM Imaging

“…Few applications of spICPMS in environmental matrix have been assessed, especially in aquatic media. Most studies are about silver ENPs detected (Mitrano et al, 2012;Tuoriniemi et al, 2012;Wang et al, 2020) or spiked (Telgmann et al, 2014) in wastewater samples (Polesel et al, 2018) and in natural waters (Mitrano et al, 2014;Yang et al, 2016). One study deals with the detection of ZnONPs in water by using both a binding resin and spICPMS (Hadioui et al, 2015).…”