The C2 amination of benzoxazole offers wide-ranging potential for substrate expansion and the functionalisation bioactive compounds. This study presents a green efficient C-H amination, catalysed by CuCl CuCl₂, in acetonitrile without acidic, basic or oxidant additives that is accelerated Microwave (MW) irradiation completed 1.5–2 h. A solid Cu(I) catalyst supported on aminated silica made process cost-effective heterogeneous, thus simplifying work-up minimising free copper solution. was...

The aim of this study was to develop a differential pulse anodic stripping voltammetry (DPASV) method for the rapid, sensitive and cost-effective determination speciation inorganic arsenic in aquatic environments. electrochemical arsenite arsenate investigated using rotating solid gold electrode (SGE). As(III) selectively determined at +0.1 V by ASV after deposition -0.3 V. total As content (As(V) + As(III)) electrochemically reduced -1.2 nascent hydrogen As0, then As(V) evaluated indirectly...

This study introduces an improved method for the on-site quantification of cadmium and lead in officinal plants using differential pulse anodic stripping voltammetry (DP-ASV) with a glassy carbon electrode (GCE) modified by in-situ mercury film (iMF-GCE). Initial experiments, conducted one-variable-at-the-time (OVAT) approach, have provided suboptimal recovery rates linearity, factors refined later through systematic experimental approach involving two different designs: Plackett-Burman Face...

Honey can be classified based on its geographical or botanical origin according to Directive 2001/110/EC. Geographical is determined when the pollen collection occurs entirely in a specific location, allowing producers label honey with name of region. Verification typically involves melissopalynological analysis match spectrum regional vegetation. Botanical applies predominantly comes from single floral species, characterized by organoleptic, physico-chemical, and microscopic properties....

The determination of the authenticity extra virgin olive oils (EVOOs) has become more interesting in recent years. Italy is first country Europe terms number Protected Designation Origin (PDO) oils, which connects consumers to a feeling tradition and thus higher quality standards. This work focused on consideration inorganic content as possible marker EVOOs. Ten vegetable (VOs), eight Italian EVOOs seven not were analyzed. After pretreatment by acid mineralization, Al, Ba, Ca, Cu, Fe, K, Li,...

Diclofenac (DCF) is a nonsteroidal anti-inflammatory drug to treat pain and inflammatory diseases. The high consumption of the leads significant change in ecosystem. With aim optimizing fast screening analysis for DCF detection on many samples with sensitive cheap procedure, we considered electrochemical methods using carbon-based electrodes as sensors. behavior was studied glassy carbon (GCE) screen-printed (SPCEs) from two different suppliers after an anodic activation. surface SPCEs...

In this work, an evaluation of the air two Italian industrial cities, Turin and Biella, has been performed to identify main sources affecting its quality evaluate evolution along 15 years. These cities are placed at border Po valley, one most polluted areas Europe, automotive textile industries have their economic sectors. The elemental analysis PM10 collected there in 2007 by ICP-MS ICP-AES. results urban activities soil/road dust resuspension as metals. Biella was overall less than Turin,...

The inorganic component of hazelnuts was considered as a possible marker for geographical allocation and the assessment technological impact on their quality. analyzed samples were Italian cultivar Tonda Gentile Romana Turkish cultivars Tombul, Palaz Çakildak. subjected to different drying procedures conservative methods. concentration 13 elements, namely Ba, Ca, Cu, Fe, K, Mg, Mn, Na, Ni, P, Sn, Sr Zn, quantified by inductively coupled plasma optical emission spectroscopy (ICP-OES). All...

Charge-transfer crystals exhibit unique electronic and magnetic properties with interesting applications. The charge-transfer single crystal formed by dibenzotetrathiafulvalene (DBTTF) together 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) presents a long-range ordered supramolecular structure of segregated stacks, unitary degree charge transfer. Thus, the is composed dimerized radical molecules unpaired electrons. energy levels spin degrees freedom this material were...

This study addresses the widespread use of UV filters (UVFs) in cosmetic and solar products due to negative effects radiation, particularly relation melanoma risk. While these offer protection, their extensive application raises concerns about environmental health impacts. Organic UVFs, particular, have been associated with endocrine disruption aquatic species coral reef damage. To mitigate concerns, regulatory limits imposed on certain UVFs. Current analytical techniques for UVF...

Rice husk is a waste by-product of rice production. This material has moderate cost and readily available, representing 20-22% the biomass produced by cultivation. study focused on properties in remediation soils contaminated heavy metals. The effect particle size, pH, presence organic ligands sorption efficiency was evaluated for cadmium (Cd), copper (Cu), manganese (Mn). continuous flow method used to select suitable operative conditions maximize retention Subsequently, pot experiments...

The electronic properties of a charge-transfer semiconducting organic co-crystal, perylene: 2,3,5,6-tetrafluoro-7,7,8,8 tetracyanoquinodimethane (PE, donor (D) : F4, acceptor (A)) in its 3 2 stoichiometry, are experimentally and theoretically studied.

This study investigated the concentrations of 22 elements in two Turin urban soils located city center (Campana Street garden (CA)) and a peripheral area (Nobile Park (NOB)). The former was found contaminated by Pb, Zn, Ba, Cr Ni and, to lower degree, As, Co, Cu Cd, while latter showed high Ni. nature Cr, Co both sites is mainly geogenic, whereas content Cd CA soil probably due exposure atmospheric deposition linked emissions from motor vehicles, domestic industrial burning fossil fuels...

A measurement and speciation procedure for the determination of total mercury (HgTOT), inorganic (HgIN), methylmercury (CH3Hg) was developed applicability on-site demonstrated. simple, portable sample pretreatment optimized to extract analytes. Home-made columns, packed with a new sorbent material called CYXAD (CYPHOS 101 modified Amberlite XAD), were used separate two forms analyte. HgTOT CH3Hg determined by anodic stripping voltammetry (ASV), using solid gold electrode (SGE). Two certified...

Abstract In this work, a two-step sequential extraction scheme for the determination of trace elements in Arctic PM 10 samples was optimized by using two certified reference materials (CRMs). By means an experimental design qualitative variables, five most common extracting solutions particulate matter (PM) (high purity water (HPW), 0.032 M HNO 3 , 0.022 HCl, 0.11 CH COOH, and 0.012 COOH/CH COONH 4 buffer) different methods (stirring ultrasounds) were compared. The purpose study...

Modern incinerator plants are equipped with an efficient system for the removal of pollutants and, hence, gas and particle emissions generally extremely low. However, it is possible that malfunctions, together specific meteorological conditions, temporarily cause significant emissions. In this study, evolution inorganic composition PM10 samples collected in vicinity Turin before after its commissioning was assessed. The purpose to identify PM sources present area, evaluate if operation...

The potential of utilizing inorganic constituents in processed animal proteins (PAPs) for species identification feeds was investigated, with the aim using these to ensure quality and authenticity products. This study aimed quantify content across various PAP assess whether analysis could effectively differentiate between species, ultimately aiding fractions feeds. Four types PAPs, namely bovine, swine, poultry, fish-based, were analyzed compared others made up feathers vegetal-based feed....

Rice husk is a waste byproduct of rice production. This material has moderate cost and readily available, representing 20-22% the biomass produced by cultivation. study focused on properties in remediation soils contaminated heavy metals. The effect particle size, pH, presence organic ligands sorption efficiency was evaluated for Cd, Cu, Mn. continuous flow method used to select suitable operative conditions maximize retention Subsequently, pot experiments were carried out growing two...

Iron, a crucial element in our environment, plays vital role numerous natural processes. Understanding the presence and concentration of iron environment is very important, as it impacts various aspects planet’s health. On-site detection speciation are significant for several reasons. In this context, present work aims to evaluate applicability voltammetry on-site determination its possible using portable voltammetric analyzer. Voltammetry offers advantage convenience cost-effectiveness. For...

Iron, a crucial element in our environment, plays vital role numerous natural processes. Understanding the presence and concentration of iron environment is very important as it impacts various aspects planet's health. The on-site detection speciation are significant for several reasons. In this context, present work aims to evaluate applicability voltammetry determination its possible using portable voltammetric analyzer. Voltammetry offers advantage convenience cost-effectiveness. For...

In this study, the information potential of a two-step sequential extraction procedure was evaluated. For purpose, first all elemental composition Arctic PM10 samples collected in Ny-Ålesund (Svalbard Islands) from 28 February 2015 to 21 October investigated. Enrichment Factors, Principal Component Analysis and Hierarchical Cluster were performed identify sources understand effects short- long-range transport processes. The investigation source areas also aided by taking into account...