Silver nanoparticles in seawater: A dynamic mass balance at part per trillion silver concentrations

Toncelli, Claudio; Mylona, Kyriaki; Kalantzi, Ioanna; Tsiola, Anastasia; Pitta, Paraskevi; Tsapakis, Manolis; Pergantis, Spiros A.

doi:10.1016/j.scitotenv.2017.05.148

Cited by 34 publications

(23 citation statements)

References 44 publications

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“…In addition to composition, several studies have shown that certain intrinsic NM properties affect dissolution and solubility, including size (Tsiola et al ), coating (Toncelli et al ), and doping (Adeleye et al ). A major issue in this area, as in other areas where attempts are made to correlate properties and behavior, has been the difficulty of varying single properties of NMs while leaving other confounding factors unchanged, although this is being done more successfully now than in 2008 (see Adeleye et al ).…”

Section: Environmental Fate and Behavior Of Nmsmentioning

confidence: 99%

Nanomaterials in the environment: Behavior, fate, bioavailability, and effects—An updated review

Lead

Batley

Alvarez

et al. 2018

Environmental Toxicology and Chemistry

498

250

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The present review covers developments in studies of nanomaterials (NMs) in the environment since our much cited review in 2008. We discuss novel insights into fate and behavior, metrology, transformations, bioavailability, toxicity mechanisms, and environmental impacts, with a focus on terrestrial and aquatic systems. Overall, the findings were that: 1) despite substantial developments, critical gaps remain, in large part due to the lack of analytical, modeling, and field capabilities, and also due to the breadth and complexity of the area; 2) a key knowledge gap is the lack of data on environmental concentrations and dosimetry generally; 3) substantial evidence shows that there are nanospecific effects (different from the effects of both ions and larger particles) on the environment in terms of fate, bioavailability, and toxicity, but this is not consistent for all NMs, species, and relevant processes; 4) a paradigm is emerging that NMs are less toxic than equivalent dissolved materials but more toxic than the corresponding bulk materials; and 5) translation of incompletely understood science into regulation and policy continues to be challenging. There is a developing consensus that NMs may pose a relatively low environmental risk, but because of uncertainty and lack of data in many areas, definitive conclusions cannot be drawn. In addition, this emerging consensus will likely change rapidly with qualitative changes in the technology and increased future discharges.

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Section: Environmental Fate and Behavior Of Nmsmentioning

confidence: 99%

Nanomaterials in the environment: Behavior, fate, bioavailability, and effects—An updated review

Lead

Batley

Alvarez

et al. 2018

Environmental Toxicology and Chemistry

498

250

View full text Add to dashboard Cite

show abstract

“…Marine waters contain significantly less suspended particles than river and estuary waters and aggregation may not be the primary process regulating the fate of ENPs. For example, Toncelli et al (2017) found that it is dissolution and not aggregation that governs the fate of silver nanoparticles in seawater, at environmentally relevant particle concentrations. Terrestrial sources of ENPs in the sea include effluents of wastewater treatment plants, transport and deposition through wind, etc., while marine sources include cargo, leisure, and transportation ships.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterial Fate in Seawater: A Rapid Sink or Intermittent Stabilization?

Gondikas

Gallego-Urrea

Halbach

et al. 2020

Front. Environ. Sci.

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Coastal seas and oceans receive engineered nanoparticles that are released from nanoenabled consumer and industrial products and incidental nanoparticles that are formed as byproducts of combustion and friction. The marine environment is often perceived as a rapid sink for particles, because of the high salinity promoting the attachment between particles producing heavy agglomerates that sediment on the seafloor. In this work the effect of seasonal production of extracellular polymeric substances (EPS) on particle stability is tested using seawater collected from the Gullmarn fjord in the winter, spring, and summer. A novel approach is used that is based on light scattering of the bulk particle population for tracking agglomerates and of single particles for tracking particles smaller than approximately 300 nm. Results show that organic particles formed from EPS during algal blooms are capable of stabilizing nanoparticles in marine waters for at least 48 h. In contrast, particles agglomerate rapidly in the same seawater that has previously been filtered through 0.02 µm pore size membranes. Furthermore, particles with fibrillar shape have been detected using atomic force microscopy, supporting the argument that organic particles from EPS are responsible for the stabilization effect. These results suggest that seasonal biological activity can act as an intermittent stabilization factor for nanoparticles in marine waters.

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“…S2), and greater dilution could be expected at the low concentrations used in our experimental mesocosms. 75 Ag + ions originating from the NP could form complexes with Cl − or S 2− ions, or link with microbial biofilms at the surface of the sediment. 21 AgCl complexes can then act as Ag-NP precursor, but such formation remains low in seawater with high Cl − , 76 especially at low Ag concentrations.…”

Section: Discussionmentioning

confidence: 99%

Environmental context determines the impact of titanium oxide and silver nanoparticles on the functioning of intertidal microalgal biofilms

Passarelli

Cui

Valsami-Jones

et al. 2020

Environ. Sci.: Nano

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Silver nanoparticles in seawater: A dynamic mass balance at part per trillion silver concentrations

Cited by 34 publications

References 44 publications

Nanomaterials in the environment: Behavior, fate, bioavailability, and effects—An updated review

Nanomaterials in the environment: Behavior, fate, bioavailability, and effects—An updated review

Nanomaterial Fate in Seawater: A Rapid Sink or Intermittent Stabilization?

Environmental context determines the impact of titanium oxide and silver nanoparticles on the functioning of intertidal microalgal biofilms

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