Assessing silver nanoparticles behaviour in artificial seawater by mean of AF4 and spICP-MS

António, Diana C.; Cascio, Claudia; Jakšić, Željko; Jurašin, Darija Domazet; Lyons, Daniel Mark; Nogueira, António J.A.; Rossi, François; Calzolai, Luigi

doi:10.1016/j.marenvres.2015.05.006

Cited by 44 publications

(24 citation statements)

References 26 publications

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“…Our Contrary to the expectation of near complete agglomeration soon after introducing AgNP to the FSW, the persistence of the surface plasmon resonance of AgNP even after 3 days may indicate that some proportion of nanoparticles remain unagglomerated, likely due to stabilisation by complexation of dissolved organic matter to the nanoparticles surface (António et al, 2015). Indeed DLS data confirm that single nanoparticles or very small agglomerates still remain in FSW (in addition to the expected large agglomerates) after several days despite the high electrolyte strength.…”

Section: Discussionmentioning

confidence: 58%

Effect of silver nanoparticles on Mediterranean sea urchin embryonal development is species specific and depends on moment of first exposure

Burić

Jakšić

Štajner

et al. 2015

Marine Environmental Research

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With the ever growing use of nanoparticles in a broad range of industrial and consumer applications there is increasing likelihood that such nanoparticles will enter the aquatic environment and be transported through freshwater systems, eventually reaching estuarine or marine waters. Due to silver's known antimicrobial properties and widespread use of silver nanoparticles (AgNP), their environmental fate and impact is therefore of particular concern.In this context we have investigated the species-specific effects of low concentrations of 60 The moment at which embryos first encounter AgNP is also shown to be an important factor in the development of abnormalities, and future applications of the sea urchin embryo development test for nanoparticle toxicity testing should carefully address the specific phase of development of embryos when nanoparticles are first introduced.

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Section: Discussionmentioning

confidence: 58%

Effect of silver nanoparticles on Mediterranean sea urchin embryonal development is species specific and depends on moment of first exposure

Burić

Jakšić

Štajner

et al. 2015

Marine Environmental Research

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“…Exploiting this capability to study particle transformation in their native environmental media is important as any additional sample preparation may alter the chemistry of the media, resulting in a [37] Copyright 2014 American Chemical Society misrepresentation of particle behavior. Silver nanoparticle aggregation has been studied in simulated sea water, demonstrating the rapid aggregation these particles are subject to in high salinity solutions [132]. Dissolution of Ag NPs in different aqueous compositions has also been studied, quantifying the rate of dissolution of three types of Ag NPs with different surface coatings [112].…”

Section: Environmental Detection and Characterizationmentioning

confidence: 99%

Single Particle ICP-MS: Advances toward routine analysis of nanomaterials

et al. 2016

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From its early beginnings in characterizing aerosol particles to its recent applications for investigating natural waters and waste streams, single particle inductively coupled plasma-mass spectrometry (spICP-MS) has proven to be a powerful technique for the detection and characterization of aqueous dispersions of metal-containing nanomaterials. Combining the high-throughput of an ensemble technique with the specificity of a single particle counting technique and the elemental specificity of ICP-MS, spICP-MS is capable of rapidly providing researchers with information pertaining to size, size distribution, particle number concentration, and major elemental composition with minimal sample perturbation. Recently, advances in data acquisition, signal processing, and the implementation of alternative mass analyzers (e.g., time-of-flight) has resulted in a wider breadth of particle analyses and made significant progress toward overcoming many of the challenges in the quantitative analysis of nanoparticles. This review provides an overview of spICP-MS development from a niche technique to application for routine analysis, a discussion of the key issues for quantitative analysis, and examples of its further advancement for analysis of increasingly complex environmental and biological samples. Graphical Abstract Single particle ICP-MS workflow for the analysis of suspended nanoparticles.

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“…Alternatively, the ‘one factor at a time approach’ is often employed in the sample preparation by varying the power of the sonicator, using different kinds of sonication (ultrasonic bath, probe, cup), applying titrations, filtering, sedimentation, etc. (Geiss et al 2013; Lopez-Heras et al 2014; Antonio et al 2015). By applying this concept, a starting combination of factors is selected and varied one at a time, whereas all the other factors are kept constant.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of asymmetric flow field-flow fractionation for the characterisation of nanoparticles in coated polydisperse TiO₂ with applications in food and feed

Omar

Boix

Kerckhove

et al. 2016

Food Additives & Contaminants: Part A

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Titanium dioxide (TiO2) has various applications in consumer products and is also used as an additive in food and feeding stuffs. For the characterisation of this product, including the determination of nanoparticles, there is a strong need for the availability of corresponding methods of analysis. This paper presents an optimisation process for the characterisation of polydisperse-coated TiO2 nanoparticles. As a first step, probe ultrasonication was optimised using a central composite design in which the amplitude and time were the selected variables to disperse, i.e., to break up agglomerates and/or aggregates of the material. The results showed that high amplitudes (60%) favoured a better dispersion and time was fixed in mid-values (5 min). In a next step, key factors of asymmetric flow field-flow fraction (AF4), namely cross-flow (CF), detector flow (DF), exponential decay of the cross-flow (CFexp) and focus time (Ft), were studied through experimental design. Firstly, a full-factorial design was employed to establish the statistically significant factors (p < 0.05). Then, the information obtained from the full-factorial design was utilised by applying a central composite design to obtain the following optimum conditions of the system: CF, 1.6 ml min–1; DF, 0.4 ml min–1; Ft, 5 min; and CFexp, 0.6. Once the optimum conditions were obtained, the stability of the dispersed sample was measured for 24 h by analysing 10 replicates with AF4 in order to assess the performance of the optimised dispersion protocol. Finally, the recovery of the optimised method, particle shape and particle size distribution were estimated.

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Assessing silver nanoparticles behaviour in artificial seawater by mean of AF4 and spICP-MS

Cited by 44 publications

References 26 publications

Effect of silver nanoparticles on Mediterranean sea urchin embryonal development is species specific and depends on moment of first exposure

Effect of silver nanoparticles on Mediterranean sea urchin embryonal development is species specific and depends on moment of first exposure

Single Particle ICP-MS: Advances toward routine analysis of nanomaterials

Optimisation of asymmetric flow field-flow fractionation for the characterisation of nanoparticles in coated polydisperse TiO₂ with applications in food and feed

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Assessing silver nanoparticles behaviour in artificial seawater by mean of AF4 and spICP-MS

Cited by 44 publications

References 26 publications

Effect of silver nanoparticles on Mediterranean sea urchin embryonal development is species specific and depends on moment of first exposure

Effect of silver nanoparticles on Mediterranean sea urchin embryonal development is species specific and depends on moment of first exposure

Single Particle ICP-MS: Advances toward routine analysis of nanomaterials

Optimisation of asymmetric flow field-flow fractionation for the characterisation of nanoparticles in coated polydisperse TiO2 with applications in food and feed

Contact Info

Product

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Optimisation of asymmetric flow field-flow fractionation for the characterisation of nanoparticles in coated polydisperse TiO₂ with applications in food and feed