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Andrew G Dickson - One of the best experts on this subject based on the ideXlab platform.
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ph buffers for sea water media based on the total Hydrogen Ion concentratIon scale
Deep-sea research. Part A. Oceanographic research papers, 1993Co-Authors: Andrew G DicksonAbstract:Published e.m.f. values measured using the cell ... (formule)... where p° = 101.325 kPa, and BH + and B are the conjugate acid-base pairs of 2-aminopyridine, 2-amino-2-hydroxymethyl-1,3-propanediol (tris), tetrahydro-1,4-isoxazine (morpholine), and 2-amino-2-methyl-1,3-propanediol (bis), have been re-evaluated to assign pH values based on the «total» Hydrogen Ion concentratIon scale to equimolal (m = 0.04 mol kg −1 ) buffer solutIons based on these compounds.
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ph buffers for sea water media based on the total Hydrogen Ion concentratIon scale
Deep Sea Research Part I: Oceanographic Research Papers, 1993Co-Authors: Andrew G DicksonAbstract:Published e.m.f. values measured using the cell where p° = 101.325 kPa, and BH+ and B are the conjugate acid-base pairs of 2-aminopyridine, 2-amino-2-hydroxymethyl-1,3-propanediol (tris), tetrahydro-1,4-isoxazine (morpholine), and 2-amino-2-methyl-1, 3-propanediol (bis), have been re-evaluated to assign pH values based on the “total” Hydrogen Ion concentratIon scale to equimolal (m =0.04 mol kg−1) buffer solutIons based on these compounds. These pH values are consistent with the best available equilibrium constants for acid-base processes in sea water and such pH buffers can be used as pH calibratIon standards to measure accurate values for oceanic pH on the “total” Hydrogen Ion pH scale. In additIon, the published e.m.f. results for these various amine bases have been used to calculate their respective acidity constants on this pH scale.
H F Aly - One of the best experts on this subject based on the ideXlab platform.
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extractIon and separatIon of uranium iv and certain light lanthanides from concentrated phosphoric acid solutIons using octyl phenyl acid phosphate
Journal of Molecular Liquids, 2018Co-Authors: M S Gasser, Sh Sh Emam, S E Rizk, B A Salah, S A Sayed, H F AlyAbstract:Abstract Liquid-liquid extractIon of light lanthanides (La(III) and Nd(III)) from 5.0 M phosphoric acid and U(IV) from 8.0 M phosphoric acid by Octyl Phenyl Acid Phosphate (OPAP) in benzene and kerosene at ratio 1:4, respectively, has been studied. The effects of several parameters such as shaking time, concentratIon of extractant, Hydrogen Ion concentratIon, phosphoric acid concentratIon, metal Ions concentratIon and loading capacity were separately investigated. The stoichiometry of the extracted species is deduced using the slope analysis method (Kislik [ 1 ]). EvaluatIon of extractIon equilibrium, stripping and separatIon feasibility has been investigated as well as regeneratIon processes.
M S Gasser - One of the best experts on this subject based on the ideXlab platform.
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extractIon and separatIon of uranium iv and certain light lanthanides from concentrated phosphoric acid solutIons using octyl phenyl acid phosphate
Journal of Molecular Liquids, 2018Co-Authors: M S Gasser, Sh Sh Emam, S E Rizk, B A Salah, S A Sayed, H F AlyAbstract:Abstract Liquid-liquid extractIon of light lanthanides (La(III) and Nd(III)) from 5.0 M phosphoric acid and U(IV) from 8.0 M phosphoric acid by Octyl Phenyl Acid Phosphate (OPAP) in benzene and kerosene at ratio 1:4, respectively, has been studied. The effects of several parameters such as shaking time, concentratIon of extractant, Hydrogen Ion concentratIon, phosphoric acid concentratIon, metal Ions concentratIon and loading capacity were separately investigated. The stoichiometry of the extracted species is deduced using the slope analysis method (Kislik [ 1 ]). EvaluatIon of extractIon equilibrium, stripping and separatIon feasibility has been investigated as well as regeneratIon processes.
Jacob Lemann - One of the best experts on this subject based on the ideXlab platform.
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defense of Hydrogen Ion concentratIon in chronic metabolic acidosis
Annals of Internal Medicine, 2020Co-Authors: Edward J Lennon, Jacob LemannAbstract:Excerpt The interpretatIon of disturbances in acid-base metabolism requires knowledge of the Hydrogen Ion concentratIon of body fluids and the state of the buffers that defend this concentratIon. C...
Frank Rosch - One of the best experts on this subject based on the ideXlab platform.
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dependence of the mobility of tracer Ions in aqueous perchlorate solutIons on the Hydrogen Ion concentratIon
Physical Chemistry Chemical Physics, 2003Co-Authors: E Mauerhofer, Frank RoschAbstract:The dependence of the absolute individual Ion mobility (AIIM) of the carrier-free radioactive Ions [137Cs]Cs+, [201Tl]Tl+ and [57Co]Co2+ on the Hydrogen Ion concentratIon in aqueous perchlorate electrolyte mixtures was studied by means of the electromigratIon technique. The AIIM of the radioactive Ions was found to decrease as the Hydrogen Ion concentratIon of the electrolyte mixture increases. Above pH > 4 there is a fairly good agreement between experimental and calculated values. Below pH 4 the experimentally observed decrease of the AIIM is not explained by the extended Debye–Huckel–Onsager limiting law. The effect can possibly be explained by a change of the dynamical properties of electrolyte bulk water due to the increasing presence of an excess of hydrated protons in the bulk solutIon. From the variatIon of the rotatIonal reorientatIon time of bulk water molecules in HClO4 electrolytes with the proton concentratIon, a value of 0.69 ps−1 is derived for the rate constant for proton transfer between the hydronium Ions and the acceptor water molecules. For the proton hopping length a value of 2.46 A was found. These two values are in good agreement with the literature values. Finally, we propose a relatIon for mobility of tracer Ions in HClO4 electrolytes involving the proton hopping time and length.
