Results 201 to 210 of about 41,179 (256)
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Radiometric acid-base titrations
Talanta, 1969Acid-base titrations can be performed with radiometric end-point detection by use of labelled metal salts (e.g., ZnCl(2), HgCl(2)). Owing to the formation or dissolution of the corresponding hydroxide after the equivalence point, the activity of the titrated solution linearly increases or decreases as excess of standard solution is added. The end-point
L, Erdey, O, Gimesi, F, Szabadváry
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Titratable acidities of crystalline amino acid admixtures
American Journal of Health-System Pharmacy, 1980Titration curves for total parenteral nutrient (TPN) products were developed and used to determine the amount of alkali needed to make various pH changes. Equations and graphs for determining the titratable acidities of TPN solutions are presented. Samples of five crystalline amino acid products and of 1:1 mixtures of the products with 50% dextrose ...
R J, Sturgeon +4 more
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Soil Science Society of America Journal, 1970
Abstract Seven acid soils containing varied cation exchange materials were studied by means of conductometric and potentiometric titrations with Ba(OH) 2 , NaOH, Na 2 B 4 O 7
H. C. Dewan, C. I. Rich
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Abstract Seven acid soils containing varied cation exchange materials were studied by means of conductometric and potentiometric titrations with Ba(OH) 2 , NaOH, Na 2 B 4 O 7
H. C. Dewan, C. I. Rich
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Alternative methods for titratable acidity determination
Talanta, 1995Methods for determination of titratable acidity, other than traditional titration, i.e. methods without titration, are considered. A number of them use analytical acid-base reagents which quickly convert a mixture of strong and weak acids into a new system. This conversion makes it possible to obtain directly the analytical signal (pH, optical density,
O Y, Berezin +3 more
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Titratable acidity: A Pitts concept revisited
Scandinavian Journal of Clinical and Laboratory Investigation, 2014Titratable Acidity (TA) in urine can be measured directly or calculated from actual and reference pH, by using the pKa₂ 6,8 for phosphate. In urine, H₂PO₄(-) represents the excretion of filtered H₂PO₄(-), filtrated HPO₄(2-) being completely reabsorbed by the proximal tubule (the Van Slyke approach).
Roberto, Mioni, Giuseppe, Mioni
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Recueil des Travaux Chimiques des Pays-Bas, 1948
AbstractThe researches here described deal with electrometric titrations of strong acids in the presence of adsorption charcoal (Norit). The titration curves of the system containing charcoal are of the type of titration curves of weak acids; the systems have a pronounced buffer capacity.
H. J. C. Tendeloo +2 more
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AbstractThe researches here described deal with electrometric titrations of strong acids in the presence of adsorption charcoal (Norit). The titration curves of the system containing charcoal are of the type of titration curves of weak acids; the systems have a pronounced buffer capacity.
H. J. C. Tendeloo +2 more
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Thermometric titration of acids in pyridine
Talanta, 1974Thermometric titration of HClO(4), HI, HNO(3), HBr, picric acid o-nitrobenzoic acid, 2,4- and 2,5-dinitrophenol, acetic acid and benzoic acid have been attempted in pyridine as solvent, using 1,3-diphenylguanidine as the base. Except in the case of 2,5-dinitrophenol, acetic acid and benzoic acid, the results are, in general, reasonably satisfactory ...
R, Vidal, L M, Mukherjee
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Non-aqueous titration of hydroxamic acids
Talanta, 1966Benzohydroxamic acid is titrated with 0.1M tetrabutyl-anunonium hydroxide in nine non-aqueous solvents with three different indicating electrodes. The best results are obtained using dimethylformamide as solvent and platinum-platinum electrodes. Four monoprotic and three diprotic hydroxamie acids and iron(III) benzohydroxamate have been successfully ...
Stamey, T. W., Christian, Robert V.
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2010
Titratable acidity and pH are two interrelated concepts in food analysis that deal with acidity. Each of these quantities is analytically determined in separate ways and each provides its own particular insights on food quality. For example, while pH is important to assess the ability of a microorganism to grow in a specific food, titratable acidity is
George D. Sadler, Patricia A. Murphy
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Titratable acidity and pH are two interrelated concepts in food analysis that deal with acidity. Each of these quantities is analytically determined in separate ways and each provides its own particular insights on food quality. For example, while pH is important to assess the ability of a microorganism to grow in a specific food, titratable acidity is
George D. Sadler, Patricia A. Murphy
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Recueil des Travaux Chimiques des Pays-Bas, 1952
AbstractThe effect of adding activated charcoal to solutions of relatively strong organic acids on the shape of the titration curves is examined theoretically. Titration curves were calculated on the basis of the assumption that the uneven distribution of the acids, due to the presence of the adsorbent, can be described as a two‐space distribution, one
A. E. Mans, G. J. Vervelde
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AbstractThe effect of adding activated charcoal to solutions of relatively strong organic acids on the shape of the titration curves is examined theoretically. Titration curves were calculated on the basis of the assumption that the uneven distribution of the acids, due to the presence of the adsorbent, can be described as a two‐space distribution, one
A. E. Mans, G. J. Vervelde
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