The availability of certain indicators in the determination of gastric acidity
A comparative study was made of certain indicators which have been used in the titration of gastric juice for free and total acidity and for the colorimetric determination of the H ion concentration of the same. The findings apply particularly to titrations where small amounts of gastric juice are available and many determinations must be carried out ...
Olaf Bergeim+2 more
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Polyunsaturated fatty acid biosynthesis pathway determines ferroptosis sensitivity in gastric cancer [PDF]
Significance Phosphatidylethanolamine (PE)-linked arachidonic acid (AA) and adrenic acid (AdA) are well-known substrates for lipid peroxidation, which are indispensable for ferroptosis, an iron-dependent regulated necrosis. However, how cells differentially regulate the intracellular pools of AA and AdA is not fully understood.
Kyoung Jin Oh+25 more
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AN APPARATUS AND SIMPLIFIED METHOD OF DETERMINING GASTRIC AND OTHER ACIDITIES QUANTITATIVELY [PDF]
The usual method of determining the amount of the various acids in stomach contents after a test trial necessitates numerous and more or less troublesome apparatus, viz., burette-holder and stand, burette with attachments, one or more glass beakers and a second burette or pipette in which to measure the stomach contents.
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Determination of gastric acidity and pH.
The free HC1 of the gastric contents may be easily titrated using brom phenol blue as an indicator. The “total acidity” has no chemical meaning. The pH may be determined by means of the Duboscq colorimeter, using quinaldine redas an indicator. The centrifuged gastric contents are measured and an equal measure of distilled water taken as a standard. The
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Determination of Gastric Acidity without Intubation by Use of Cation Exchange Indicator Compounds.
SummaryThe preparation of a cation exchange indicator compound called quininium resin indicator compound has been described. The rationale and method of its use have been stated.In vitro tests have demonstrated that the quininium cation present in this compound will be displaced by the hydrogen ions of dilute hydrochloric acid solutions and of the ...
Harry L. Segal+2 more
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THE CHEMICAL EXAMINATION OF THE GASTRIC CONTENTS, WITH AN ACCURATE CLINICAL METHOD OF DETERMINING THE " ACTIVE " HYDROCHLORIC ACID. [PDF]
n ...
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The Determination of Gastric Acidity by the Glass Electrode
Edward W. Moore, Robert W. Scarlata
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Why gastric acidity must be determined by titration, and how
G. Vantrappen, T.L. Peeters
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The Use of Cation Exchange Resin to determine Gastric Acidity without Intubatin
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Fluorometric determination of gastric acidity with 2-fluorenecarboxaldehyde hydrazone [PDF]
Fluorenecarboxaldehyde hydrazone (FCH) was synthesized as a new fluorescent reagent for the determination of acidity. FCH had no fluorescence in itself, however, it strongly fluoresced under acidic conditions at excitation maximum of 392 nm and emission maximum of 447 nm, respectively.
Jung-Kap Choi+2 more
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