A method is described for the measurement of magnesium in biological materials and has been applied to the Unicam flame spectrophotometer SP 900. Samples were diluted in 10 mM strontium ethylenedinitrolo tetraacetate (EDTASr), 10 mM potassium carbonate, giving final magnesium concentrations of about 0.1 to 0.2 mM. The EDTASr almost eliminated the depression of magnesium emission by interfering ...

The study reports petrography, mineralogy and carbonate geochemistry stable isotopy of various types ocelli (silicate-carbonate globules) observed in the lamprophyres from Chadobets Uplift, southwestern Siberian craton. are related to REE-bearing Chuktukon carbonatites. On basis their morphology, relation with surrounding groundmass, we distinguish three ocelli: carbonate-silicate, containing c...

CO 2 utilisation is a rapidly growing area of interest aimed at reducing the magnitude anthropogenic greenhouse gas emissions.

Many commonly used techniques for detecting drugs in biological samples (e.g., gas chromatography, thin-layer chromatography, fluorimetry, and ultraviolet spectrophotometry) require that the drugs first be separated from the biological matrix. They usually are separated by extraction with an immiscible organic solvent or by adsorption onto a solid support. These are time-consuming methods, and ...

Quasi solid state dye-sensitized solar cells (DSSCs) have been fabricated with electrolytes containing I−/I3 redox couple using 80 % hydrolyzed polyvinyl alcohol (PVA) doped with potassium iodide (KI) and a mixture of potassium iodide and tetrapropyl ammonium iodide (Pr4NI) salts. The quasi solid state gel polymer electrolytes were prepared using 1:1 ethylene carbonate (EC):propylene carbonate ...

Highly reproducible Fourier transform infrared (FTIR) spectra from both single onion (Allium cepa) cell walls and their constituent polymers were obtained under a variety of sampling conditions. The specificity of the chemical extraction sequence used in the preparation of the material was confirmed: pectins only are extracted by cyclohexanediaminetetraacetic acid and sodium carbonate, whereas ...

We discuss the characterization of phantom materials that simulate the electromagnetic characteristics of various human tissues from 100 Hz to 10 MHz, and over a temperature range of 15 C to 40 C. The materials studied were: 1) a solution of potassium chloride in water, 2) a solution of propylene carbonate, ethylene carbonate, and salts, 3) a semi-solid material consisting of silicone and carbo...

Cyanoacrylate glues are quick setting materials which rapidly cure to hard, clear glassy resins. Its synthesis too has not been reported in the open literature so far. Synthetic methods, which engage esterification of cyanoacetic acid with a preferred alcohol, polymerization by knoevenagel condensation and successive depolymerization, are applied to the synthesis of lower membered alkyl cyanoac...

Research Article 2017 January, Vol.5 (1): 56 – 63 © Copy Right, 2017 A novel green process for synthesis of venlafaxine and its impurities K. Palanivel, D. Sivakumar, S. Sivapriya, S. Priyanka, M. Gopalakrishnan and H. Manikandan* Department of Chemistry, Annamalai University,Annamalainagar-608002 ,India. Author E-mail: [email protected] Abstract An improved process for synthesis of Venlafa...