Ecsin European Center For The Sustainable Impact Of Nanotechnology Veneto Nanotech Scpa

Costa di Rovigo, Italy

Ecsin European Center For The Sustainable Impact Of Nanotechnology Veneto Nanotech Scpa

Costa di Rovigo, Italy
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Bocca B.,Instituto Superiore Of Sanita | Sabbioni E.,University of Chieti Pescara | Sabbioni E.,Ecsin European Center For The Sustainable Impact Of Nanotechnology Veneto Nanotech Scpa | Micetic I.,Ecsin European Center For The Sustainable Impact Of Nanotechnology Veneto Nanotech Scpa | And 3 more authors.
Journal of Analytical Atomic Spectrometry | Year: 2017

We have applied different analytical techniques for studying the size and metal composition of nanoparticles (NPs) and microparticles in tattoo inks. The morphology and size distribution of particles were determined by transmission electron microscopy (TEM) and dynamic light scattering (DLS). These techniques allowed us to obtain size information on all particles in tattoo mixtures. Higher resolution characterization of the size distributions was achieved by means of asymmetric flow field fractionation (AF4) combined with multi-angle light scattering (MALS) detection, which allowed for particle fraction separation and sizing. The high sensitivity and multi-elemental capability of inductively coupled plasma mass spectrometry (ICP-MS) enabled the off-line determination of the metal concentration of the particles in the AF4 fractions. Counting and sizing of particles were also performed by single particle (SP)-ICP-MS. The TEM images of the tattoo inks indicated the presence of individual particles and of aggregates and agglomerates of different shapes; carbon black was recognized in black inks and TiO2 in lighter shades. The DLS measurements showed that the inks were polydispersed with particles continuously distributed from tens to hundreds of nanometers (the Z-average hydrodynamic diameter range was 31-421 nm). The use of AF4 revealed the presence of two different fractions of particles in colored inks and one fraction in black inks, with mean sizes ranging from ca. 50 nm to ca. 400 nm. AF4 and off-line ICP-MS analyses of these fractions showed micronic and sub-micronic Al and Ti particles and Cu at the nanometer level (<100 nm). SP-ICP-MS analysis confirmed these latter findings: the inks contained nanosized materials of Cu (such as CuO or Cu-phthalocyanine), while Al (as Al2O3) and Ti (as TiO2) were detected as larger sized particles. Overall, this work confirms the power of different analytical techniques in detecting and characterizing NPs and microparticles in tattoo inks. We show that tattoo ink suspensions unquestionably contain NPs, suggesting the need for an assessment of how they interact with human skin as well as if they can penetrate the derma to reach the bloodstream. © The Royal Society of Chemistry 2017.


Sabbioni E.,University of Chieti Pescara | Sabbioni E.,Ecsin European Center For The Sustainable Impact Of Nanotechnology Veneto Nanotech Scpa | Polettini A.-E.,University of Verona | Fortaner S.,European Commission - Joint Research Center Ispra | And 5 more authors.
Bulletin of Environmental Contamination and Toxicology | Year: 2014

75Se-selenite transfer was investigated in a phytoplankton-mussel-rat food chain model consisting of Scenedesmus obliquus (Turpin) Kützing, Unio mancus Lamark and Rattus norvegicus Berkenhout. 75Se-metabolized forms were investigated in order to identify potential critical steps in the food chain, as well as its relative bioavailability looking also at intracellular, cellular and organ partitioning. Tissue and intracellular distribution of 75Se in mussels fed with 75Se-S. obliquus was different compared to those exposed only to inorganic 75Se-selenite. The intracellular distribution of 75Se in the hepatopancreas and mantle of mussels fed 75Se-microalgae was similar to hepatic and renal distributions in rats, suggesting that their stomach dissociated larger 75Se-containing molecules. The 75Se partitioned from water (culture medium) to microalgae showing a bioconcentration factor of 435. The bottleneck in the trophic transfer of 75Se occurred between S. obliquus–U. mancus. From microalgae to mussels and subsequently to rats no bioaccumulation was verified. © 2014 Springer Science+Business Media New York


Minetto D.,University of Venice | Libralato G.,University of Venice | Libralato G.,Ecsin European Center For The Sustainable Impact Of Nanotechnology Veneto Nanotech Scpa | Volpi Ghirardini A.,University of Venice
Environment International | Year: 2014

The innovative properties of nanomaterials make them suitable for various applications in many fields. In particular, TiO2 nanoparticles (nTiO2) are widely used in paints, in cosmetics and in sunscreens that are products accessible to the mass market. Despite the great increase in the use of such nanomaterials, there is a paucity of general information about their potential effects to the aquatic species, especially to saltwater ones. Moreover, the difficulties of determining the effective exposure scenario make the acquired information low comparable. In this work, questions about the complexity of the real exposure scenario determination are discussed. The state of the art, concerning the experimental activities with nTiO2 toward the saltwater organisms is firstly illustrated, providing statistical information about the different matrices, organisms and nanoparticles employed. A comparison of the nTiO2 ecotoxicity effects, grouped by taxonomic classes, is provided illustrating their relative experimental conditions. Findings show the need to develop specific protocols for toxicity tests with ENPs to control the variability of experimental conditions. Some advices are finally proposed for the future experimental activities. © 2014 Elsevier Ltd.

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