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Showing 1 to 20 of 26 for “"Polarography"”.
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Polarography of mercury in aliphatic diamines
… was discovered when a cryostat needed for use in polarography in liquid ammonia (the original problem) was found broken. For experience it was decided to turn to another form of nonaqueous polarography while the parts were on order. Materials remaining from a previous diamine investigation by Foss …
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Polarography applied to nitrate determination in sanitary water analysis
The purpose of the investigation was to determine the interfering effect on the polarographic method of nitrate analysis of certain chemicals commonly employed in the water purification process. Chemicals tested consisted of coagulants, a disinfectant, and an algaecide. A. “synthetic” water of …
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Oxygen Polarography in the Awake Macaque: Bridging BOLD fMRI and Electrophysiology
… macaques as a surrogate for BOLD fMRI. Oxygen polarography measures tissue oxygen which is coupled to blood oxygen. This tool offers higher resolution than BOLD fMRI and can be more readily combined with electrophysiology.</p><p>Using this new tool we evaluated local field potential and oxygen …
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Studies on the electrochemical reduction and the photolysis of phenacyl 'onium salts and related compounds
… at a mercury cathode has been investigated using polarography, coulometry, titrimetry and product analysis methods.
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ΣΥΝΘΕΣΗ ΦΑΣΜΑΤΟΣΚΟΠΙΚΗ ΚΑΙ ΚΒΑΝΤΟΧΗΜΙΚΗ ΜΕΛΕΤΗ ΣΥΜΠΥΚΝΩΜΕΝΩΝ (Β) ΚΙΝΟΞΑΛΙΝΙΚΩΝ ΣΥΣΤΗΜΑΤΩΝ ΚΑΙ ΠΑΡΑΓΩΓΩΝ ΤΟΥΣ
… WITH A CALCULATED ELECTRONIC CHARGE. POLAROGRAPHY OF 1,4-DIOXIDES AND QUINOXALINES. RELATION BETWEEN THE E1/2R AND ELUMO. SUPERDELOCALIZABILITY AND ENERGIES OF FMO WERE STUDIED.
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Corrosion and corrosion suppression on n-type gallium arsenide semiconductor liquid-junction solar cells
… by measuring As(III) using differential pulse polarography (DPP). In neutral electrolytes a rotating ring-disc experiment measured the efficiency of hole-transfer to a redox couple. Two protecting processes have been utilized. Silanization and electrochemical polymerization of divinylbenzene …
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A polarographic study of the reduction of unsymmetrical benzils.
This investigation applied the techniques of polarography and controlled potential electrolytic reduction to the study of a series of unsymmetrical benzils. Eleven unsymmetrical benzils were synthesized and studied in 50% ethanol-water (by volume) solvent systems buffered at pH 1, 5, and 13. The …
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NOVEL ZINC AND LITHIUM NON-AQUEOUS BATTERIES FOR LOW RATE APPLICATIONS
… of relative humidity. Using methods based on polarography the speciation between the oxidation states of manganese as a function of the degree of cell discharge has been studied. The discharge times for a series of cells suggests an exponential decrease with increasing load. This is consistent …
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ΗΛΕΚΤΡΟΔΙΕΠΙΦΑΝΕΙΑΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΤΕΤΡΑΥΠΟΚΑΤΕΣΤΗΜΕΝΩΝ ΦΩΣΦΩΝΙΟΚΑΤΙΟΝΤΩΝ ΣΤΗ ΔΙΑΦΑΣΙΚΗ ΠΕΡΙΟΧΗ ΥΔΡΑΡΓΥΡΟΥ/ΔΙΑΛΥΜΑΤΟΣ ΣΕ ΜΕΘΑΝΟΛΙΚΑ ΗΛΕΚΤΡΟΛΥΤΙΚΑ ΣΥΣΤΗΜΑΤΑ
… CAPACITANCE MEASUREMENTS BY PHASE SELECTIVE A.C. POLAROGRAPHY FOR THE ADSORPTION OF [MEPH3P]+, [BUPH3P]+, [PGPH3P]+, [CPRPH3P]+, [VPH3P]+, [PH4]+ CATIONS FROM METHANOLIC SOLUTIONS AT THE DROPPING AND HANGING DROP MERCURY ELECTRODE. THE ADSORPTION PARAMETERS WERE DETERMINED ON THEBASIS OF OUR …
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Complexation of trivalent lanthanides by three diphosphonate ligands in the blood plasma
… ligands were measured using potentiometry and polarography. The latter was used to complement potentiometry in systems where precipitates formed. The complexation of Cd(II) by HEDP was used to compare the two techniques and to show that the values found by either technique are comparable. NMR …
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Trace metals in upper Susquehanna River ecosystem: environmental distribution, urban impacts, and interaction with sediment materials
… stripping voltammetry with differential pulse polarography, and ion exchange) were explored for measuring the speciation of TMs and ligands in such samples.</p>
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Voltammetric and other properties of methylmercury compounds and distribution of methylmercury in environmental samples
… methylmercury solutions has been studied using polarography and cyclic voltammetry at the dropping mercury electrode. By scanning a broad range of pH, pCl and methylmercury concentrations, a detailed reduction mechanism has been proposed. Reduction is shown to proceed in two le‾ steps, involving …
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The Biogeochemistry of Iodine in Seawater
… iodide, and total iodine were determined by polarography or voltammetry. In the surface water iodate was the dominant form of inorganic iodine in the winter while iodide was the dominant species most of the rest of the year. Dissolved organic iodine was mainly found in the spring. In the deep …
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The application of electro-analytical techniques to sea water analysis
… in his paper "The application of cathode ray polarography in the field of oceanography" in which he states:- "Present day research on the physical, chemical and biological phenomena of the deep ocean has placed new requirements on the methods of analysis that are needed in support of this …
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The Effect of Allopurinol and Inosine Administration on Xanthine Oxidoreductase Gene Expression, Mitochondrial Respiration, and Inflammation in Broiler Chickens
… for State III and State IV respiration using polarography. There was a significant reduction in State III respiration (p=0.01) and State IV respiration (p=0.007) in allopurinol-treated birds compared to the controls. The purpose of the third study was to assess the effect of allopurinol on …
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