Different plastic toys are on sale in the Italian market: they are sold as souvenirs and/or as toys. Such statuettes, called Gongoli, represent a famous character (a soccer player, a politician, the Pope, etc.). In particular, these products are widely sold, but the material composition is not sufficiently defined. Further, the effect of the release of dangerous compounds on human health is not sufficiently documented. Following this hypothesis, a study on eight different statuettes was carried out both for evaluating the possible presence of heavy metals and for evidencing their release from these objects. Preliminary analysis by means of EDS spectroscopy highlighted the percentage chemical composition of different products, especially the presence of total Cr and Ni. Release tests evidenced the release of Cr, Cu, Ni, and Pb: Pb reached 74 mg kg, which is an interesting value even if it is lower than reported in the legislation. This study should be considered preliminary due to its limitations, such as the number of items investigated and the large variability found for some elements, but it highlights a serious problem related to the classification of these products which are marketed as souvenirs but manipulated by children.
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http://dx.doi.org/10.3390/ijerph19010236 | DOI Listing |
Biomed Mater
December 2024
State Key Laboratory of Nuclear Physics and Technology, Department of Technical Physics, School of Physics, Peking University, Beijing 100871, People's Republic of China.
Titanium (Ti), characterized by its exceptional mechanical properties, commendable corrosion resistance and biocompatibility, has emerged as the principal functional materials for implants in biomedical and clinical applications. However, the Ti-6Al-4V (TC4ELI) alloy has cytotoxicity risks, whereas the strength of the existing industrially pure titanium TA4 is marginally inadequate and will significantly limit the scenarios of medical implants. Herein, we prepared ultrafine-grained industrial-grade pure titanium TA4 and titanium alloy TC4ELI via the equal channel angular pressing method, in which the TA4-1 sample has ultrahigh strength of 1.
View Article and Find Full Text PDFG3 (Bethesda)
December 2024
Department of Integrative Biology, University of Guelph, Guelph, Ontario, N1G 2W1.
The release of heavy metals from industrial, agricultural, and mining activities poses significant risks to aquatic ecosystems by degrading water quality and generating reactive oxygen species (ROS) that can damage DNA in aquatic organisms. Daphnia is a widespread keystone species in freshwater ecosystems that is routinely exposed to a range of anthropogenic and natural stressors. With a fully sequenced genome, a well-understood life history and ecology, and an extensive library of responses to toxicity, Daphnia serves as an ideal model organism for studying the impact of environmental stressors on genomic stability.
View Article and Find Full Text PDFWater Environ Res
December 2024
Microsystems Fabrication Laboratory, Indian Institute of Technology Kanpur, Kanpur, UP, India.
In this study, we developed an economical treatment process for highly acidic effluents from steel rolling mills containing toxic heavy metals. Our method involves a pH-dependent approach using mining waste and hydrated lime. The treatment occurs in two steps: First, metal oxides precipitate at pH 3-3.
View Article and Find Full Text PDFLuminescence
December 2024
Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.
The present study was performed to synthesize eco-friendly nickel oxide nanoparticles (NiONPs) from the aqueous extract of Fissidens species (FS) and explore its biological activities. Phytochemicals, namely, alkaloids, flavonoids, sterols, tannins, proteins, carbohydrates and phenols, were present in the aqueous extract of Fissidens sp. The UV-Vis and FT-IR analyses of FS-NiONPs revealed a prominent peak at 392 nm, along with functional groups that facilitate the formation of FS-NiONPs.
View Article and Find Full Text PDFMikrochim Acta
December 2024
Department of Chemistry, Yazd University, Yazd, 89195-741, Iran.
An electrochemical aptasensor has been developed specifically for the sensitive and selective determination of ochratoxin A (OTA), one of the most important mycotoxins. The aptasensor utilizes a glassy carbon electrode that has been modified with toluidine blue (TB) encapsulated in a Zn-based metal-organic framework (TB@Zn-MOF). The results demonstrate that in the presence of OTA, the peak current of the differential pulse voltammogram (DPV) related to TB oxidation is notably decreased.
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