The Turkevich method, in which citrate reduces chloroauric acid, is one of the most popular and standard protocols for the synthesis of gold nanoparticles. Mechanistic studies for this reduction have shown that reducing and capping capabilities of citrate are associated with its structure and pa...
Three novel fluorescent probes (L1, L2 and L3) derived from 2-hydroxyphenyl-4-chloromethyloxazole 8-ydroxyquinaldine were designed and synthesized. The probes showed highly selectively and sensitivity towards Cu2+ ion through “turn off” response in DMF/H2O solution (v/v = 1/1, 0.01 M, Tris-HCl...
The nature of the reactive metabolites formed during HRP/H2O2 catalyzed oxidation of p-phenetidine was investigated. Interaction with DNA measured as the induction of DNA single strand breaks and DNA binding resulted in a time-dependent decrease in the interaction and could be related to the pri...
The present study was aimed to test the possible cyclooxygenase (COX)-1/COX-2 selectivity of the old analgesic drug phenacetin and its metabolite p-phenetidine, which exhibits high renal toxicity. Paracetamol (acetaminophen), the main metabolite of phenacetin with low renal toxicity, and indomet...
A methodology for process intensification that reduces the number of pieces of equipment as part of the design of a chemical process is presented. The method is based on three stages, the first one to detect feasible process alternatives, the second one to identify intensification opportunities,...
Ethyl 2-methyl-1,3-dioxolane-2-acetate (CAS # 6413-10-1) was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data show that ethyl 2-methyl-1,3-dioxolane-2-acetat...
In the present work broadband dielectric spectra are reported for sulfolane-water mixtures in the complete composition range. The complex dielectric permittivity was measured at frequencies between 100 MHz and 50 GHz and at three temperatures 298.15 K, 308.15 K and 318.15 K. The permittivity spe...
This study investigates the degradation of sulfolane in aqueous system by (NH4)2S2O8/UVC and (NH4)2S2O8/O3/UVC. While bubbling O3 significantly decreased the reaction time, the experimental results in both cases were consistent: firstly, the degradation of sulfolane followed pseudo-first order k...
As a low-cost, non-volatile, highly polar and chemically stable solvent, sulfolane has a high implementation potential for electroplating in organic media. This is the first report of the electrodeposition of silicon from sulfolane-based electrolytes. Voltammetric and chronoamperometric techniqu...
New experimental data are presented for the solubility of carbon dioxide in aqueous sulfolane (SFL) solution, an important solvent with applications in a variety of chemical industries. Solvent mixtures of (SFL + H2O) studied in this work contain the composition range xSFL = (0.0999–0.9313), te...
Benzene and sulfolane are commonly used but hazardous chemicals in the petrochemical industry and their leakage and inappropriate disposal certainly causes serious soil and groundwater contamination. In this research, the bioremediation potential of groundwater contaminated with benzene and sulf...
In this study, the performance of an integrated technology, combining biological treatment with advanced oxidation process in sequence, was evaluated for the degradation of sulfolane in aqueous media. In addition, the impact of biological process on AOP was also studied by assessing residual sul...
Sulfolane is a ground water contaminant near refinery sites. The objective of this work was to investigate the toxicokinetics and bioavailability of sulfolane in male and female Harlan Hsd:Sprague Dawley® SD® rats and B6C3F1/N mice following a single oral administration of 10, 30, or 100 mg/kg. ...
Aerobic granulation is regarded as the future technology for wastewater treatment that can replace conventional activated sludge. In this study, two approaches of forming sulfolane degrading aerobic granules (SDAG) were successfully developed and evaluated. These include adaptation of pre-grown ...
The binary phase diagram between the plastic crystals 2-methyl-2-nitro-1-propanol (MNP) and 2,2-dimethyl-1,3-propanediol (neopentylglycol, NPG) has been established by means of thermal analysis and X-ray powder diffraction from 273 K to the liquid state.The binary system is characterized by a wi...
The gas phase reaction of 2,2-dimethyl-1,3-propandiol over ion (alkali) exchanged zeolites gives 2-methyl-propanal (I) (cleavage product), 2-methyl-butanal (II) (rearrangement product) and traces of 3,3-dimethyl-oxetane (cyclisation). The selectivities to (I) and (II) correlated apparently with ...
Heat capacities of 2,2-dimethyl-1,3-propanediol(CH3)2C(CH2OH)2 were measured in the temperature range between T = 13 K and T = 350 K using an adiabatic calorimeter. The compound underwent a first-order phase transition at T = (314.5 ± 0.1) K. The enthalpy and the entropy of transition were...
Diastereomerically pure (+)- and (−)-2,2-dimethyl-1,3-diphenyl-1,3-propanediols were synthesized starting from diethyl malonate and resolved through diesters of (−)-camphanic acid and also N-carbethoxy-l-proline. The absolute configuration of the (−)-enantiomer was established by X-ray crystallo...
In the present study the interaction between the violaxanthin cycle enzyme zeaxanthin epoxidase (ZEP) and the thylakoid membrane was investigated. Isolated, active thylakoid membranes of spinach (Spinacia oleracea L.) were subjected to different salt and detergent treatments that are generally u...
Three main xanthophyll pigments are bound to the major photosynthetic pigment-protein complex of Photosystem II (LHCII): lutein, neoxanthin and violaxanthin. Chromatographic analysis of the xanthophyll fraction of LHCII reveals that lutein appears mainly in the all-trans conformation, neoxanthin...
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