With the acronym POPs we intend a group of persistent organic pollutants framed within the Stockholm Convention [Stockholm Convention on Persistent Organic Convention (POPs) (2004). Available from http://www.pops.int/]. POPs are a subgroup of the wide family of the aforesaid chemicals present in the environment, that are primarily of industrial origin. According to their physical-chemical properties, bioaccumulative behaviour in lipid tissues, and possible toxicological effects, they represent a relevant and growing concern for human beings. Foodstuffs of animal origin represent the main source of exposure. Monitoring data from national residue plans report only few non-compliances with respect to regulatory limits. However, the estimated intake, as in the case of polychloro-p-dibenzodioxins (PCDD), polychlorodibenzofurans (PCDF) and dioxin-like polychlorobyphenils (DL-PCBs) may result close to the correspondent safety guidance value (i.e., the Tolerable Daily Intake), thus indicating the need to reduce the overall exposure. In animal productions, the sources of contamination may be the commercial feedingstuffs as well as the contact with contaminated soil and bedding materials and the overall quality of the environment where animal productions are carried out. In this light, a number of safety challenges are envisaged to produce meat, such as: (a) characterization of the environment, (b) identification of the animal-based risk factors, (c) model-based approaches, able to predict bioaccumulation, and (d) teaching and training of stockmen.
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http://dx.doi.org/10.1016/j.meatsci.2007.07.034 | DOI Listing |
Metal-organic frameworks (MOFs) are porous, crystalline materials with high surface area, adjustable porosity, and structural tunability, making them ideal for diverse applications. However, traditional experimental and computational methods have limited scalability and interpretability, hindering effective exploration of MOF structure-property relationships. To address these challenges, we introduce, for the first time, a category-specific topological learning (CSTL), which combines algebraic topology with chemical insights for robust property prediction.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
January 2025
The State University of New York College of Environmental Science and Forestry, Syracuse, USA.
Polychlorinated biphenyls (PCBs) are persistent organic pollutants and are emitted during e-waste activities. Once they enter into the environment, PCBs could pose toxic effects to environmental compartments and public health. Reductive dechlorination offers a sustainable solution to manage the PCBs-contaminated environment.
View Article and Find Full Text PDFACS Omega
December 2024
School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, U.K.
Modulating memristors optically paves the way for new optoelectronic devices with applications in computer vision, neuromorphic computing, and artificial intelligence. Here, we report on memristors based on a hybrid material of vertically aligned zinc oxide nanorods (ZnO NRs) and poly(methyl methacrylate) (PMMA). The memristors require no forming step and exhibit the typical electronic switching properties of a bipolar memristor.
View Article and Find Full Text PDFLangmuir
January 2025
School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China.
Cobalt-based metal-organic framework (MOFs)-derived catalysts are acknowledged for their effectiveness in activating peroxymonosulfate (PMS) for the treatment of persistent pollutants. However, the limited adsorption of PMS on the catalyst surface markedly reduces its degradation efficiency. To overcome this limitation, nanoflower-like EuO/CoO-0.
View Article and Find Full Text PDFEnviron Res
January 2025
Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:
Hexachlorobutadiene (HCBD), as an emerging persistent organic pollutant, poses a pressing global environmental issue concerning its reduction and control. However, the lack of systematic studies on the sources and occurrence of HCBD hinders the development of effective disposal technologies. This study addresses HCBD prevention and treatment from multiple perspectives, including source emissions, environmental contamination distribution, and control technologies.
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