Comparison of bioconcentration of ionic silver and silver nanoparticles in zebrafish eleutheroembryos

As a result of ever increasing applications, nanoparticles will eventually end up in the environment. However, currently no common principle has been established to help understand the toxicity of nanoparticles (NPs) across species. Therefore, it is difficult to estimate the potential risks of nanoparticles to untested species in the environment. The authors exposed 4 different sizes of copper nanoparticles (CuNPs) and 1 submicron-sized copper particle to 5 cladoceran species (Daphnia magna, Daphnia pulex, Daphnia galeata, Ceriodaphnia dubia, and Chydorus sphaericus) to investigate whether morphological attributes of species can help to assess the acute toxicity of CuNPs across species. The results showed that rod-shaped CuNPs caused much lower toxicity to all species than spherical CuNPs. Both the particles and ions contributed to the total toxicity of the CuNP suspensions. Moreover, the toxicity caused by particles in 5 different copper suspensions increases with decreasing body length, surface area, and body volume of neonates of 5 cladoceran species. Especially the correlations between body volume of the 5 cladoceran species tested and the corresponding toxicity caused by 5 different CuNPs were statistically significant, and in all cases radj (2) was higher than 0.51 (p < 0.001). The highest correlation was found between body volume and the toxicity of the 78-nm CuNPs (radj (2) = 0.95, p < 0.001). To conclude, the correlations between attributes of cladoceran species and the toxicity of CuNPs reported in the present study evoke the possibility to assess and extrapolate the toxicity of nanoparticles across species with similar attributes.

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Section: Acc E P Ted P R E P R I Ntmentioning

confidence: 99%

Assessing toxicity of copper nanoparticles across five cladoceran species

Song

Vijver

Snoo

et al. 2015

Enviro Toxic and Chemistry

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“…Nanotechnology is a new and rapidly developing field that involves the industrial processing and application of structures, devices, and systems by controlling shape and size in the nanometer range, having a length less than 100 nm [1,2]. Many great researchers have given attention to the synthesis of metal oxide nanoparticles, due to their essential importance and the extensive range of potential technological applications, as well as their unique properties, such as large surface area, high crystallinity, chemical purity, and phase selectivity, which are different from their bulk counterparts [3,4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Antimicrobial of MnO and CdO Nanoparticles by Using a Calcination Method

et al. 2022

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Nano-sized manganese oxide and cadmium oxide were formed quantitatively via chemical routes, using calcination from an aqueous solution containing metal chloride as a precursor, to create polyvinyl alcohol and para-aminobenzoic acid complexes with the following formulae: [Mn (PVA)(P-ABA) (H2O)3] H2O and [Cd (PVA)(P-ABA) (H2O)3]. The synthesized complexes and metal oxide nanoparticles were characterized using elemental analysis, thermal analyses (TGA and DTA), FT-IR spectroscopy, XRD analysis, UV-vis spectra, and SEM and TEM electron microscopes. The kinetic and thermodynamic parameters (∆H*, ∆G* and ∆S*) for the Mn(II) and Cd(II) coordination compounds were calculated. The antimicrobial properties of the samples were assessed using five bacterial strains and three fungal strains. Three strains of (G+) bacteria, two strains of (G−) bacteria, one stain of yeast-like fungi, and two molds were used in this study.

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“…Silver is a metal of great environmental concern due to its high bioavailability, toxicity, and very high bioaccumulation rate [27,28] that has been characterized as one of the emerging pollutants. Silver is widely used as an antimicrobial agent in several medical fields, such as biomedicine, pharmaceutical, food industry, and healthcare, but also in a wide range of industrial and consumer applications, including fiber coating, detergents, and hydrogels and plastics, to prevent bacterial and fungal growth [29].…”

Section: Introductionmentioning

confidence: 99%

Vertical Distribution and Chemical Fractionation of Heavy Metals in Dated Sediment Cores from the Saronikos Gulf, Greece

Prifti

Kaberi

Paraskevopoulou

et al. 2022

JMSE

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The Saronikos Gulf is under a lot of anthropogenic pressure, such as the urban expansion of the metropolitan area of Athens, the port of Piraeus and marinas, industrial activities, and tourism. Heavy metal pollution has been a major environmental problem in the area for many decades. Sedimentary cores have proven to be an invaluable indicator of heavy metal pollution, as they can reveal not only the current metal inputs but also the evolution of pollution over time, and with the appropriate geochemical analyses, they can provide information on the potential toxicity of metals. In this study, the temporal evolution and the chemical speciation of eleven elements were examined in sediment cores from Elefsis Bay and the Inner Saronikos Gulf, with an emphasis on the emerging environmental hazards (V and Ag). The results showed extensive pollution of the sediments by Ni, Cr, Cu, Zn, As, Mo, Cd, and Pb from the 1910s and 1960s in Eastern and Western Elefsis Bay, respectively. A significant decrease of the sediment enrichment in V, Ni, Cr, Cu, Zn, As, Cd, Pb, and Ag since 2000 was observed in the part of the Inner Saronikos Gulf that is mainly influenced by the WWTP of Athens. However, a toxicity assessment using the metal contents of the surface sediments showed that most of the trace elements studied still pose a moderate to high risk of toxicity to benthic ecosystems. The present study highlighted the urgent need for focused research and the management of trace element inputs, particularly Ag in the Inner Saronikos Gulf, where severe sediment modification was evident.

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Comparison of bioconcentration of ionic silver and silver nanoparticles in zebrafish eleutheroembryos

Cited by 29 publications

References 47 publications

Assessing toxicity of copper nanoparticles across five cladoceran species

Assessing toxicity of copper nanoparticles across five cladoceran species

Synthesis, Characterization, and Antimicrobial of MnO and CdO Nanoparticles by Using a Calcination Method

Vertical Distribution and Chemical Fractionation of Heavy Metals in Dated Sediment Cores from the Saronikos Gulf, Greece

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