Solvent Effects in Spectrophotometric Determination of Weak Organic Acids in Alkaline Solution. Application to Aromatic Primary Amine and Carbonyl Derivatives

1959 ◽  
Vol 31 (12) ◽  
pp. 2063-2065 ◽  
Author(s):  
E. Sawicki ◽  
T. R. Hauser ◽  
T. W. Stanley
Keyword(s):  
Organic Acids ◽  
Spectrophotometric Determination ◽  
Alkaline Solution ◽  
Solvent Effects ◽  
Primary Amine ◽  
Weak Organic Acids ◽  
Carbonyl Derivatives ◽  
Aromatic Primary Amine

scholarly journals General Analytical Procedure for Determination of Acidity Parameters of Weak Acids and Bases

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Bogusław Pilarski ◽  
Roman Kaliszan ◽  
Dariusz Wyrzykowski ◽  
Janusz Młodzianowski ◽  
Agata Balińska
Keyword(s):  
Organic Acids ◽  
Excellent Agreement ◽  
Analytical Procedure ◽  
Water Solution ◽  
Weak Acids ◽  
Weak Organic Acids ◽  
General Methodology ◽  
Acids And Bases

The paper presents a new convenient, inexpensive, and reagent-saving general methodology for the determination ofpKavalues for components of the mixture of diverse chemical classes weak organic acids and bases in water solution, without the need to separate individual analytes. The data obtained from simple pH-metric microtitrations are numerically processed into reliablepKavalues for each component of the mixture. Excellent agreement has been obtained between the determinedpKavalues and the reference literature data for compounds studied.

Simple and Fast Fluorometric Method for the Determination of Glycine (Or Any Primary Amine) in Dietetic Beverages

1974 ◽  
Vol 57 (6) ◽  
pp. 1265-1268
Author(s):  
Elia D Coppola ◽  
J Gordon Hanna
Keyword(s):  
Alkaline Solution ◽  
Primary Amine ◽  
Screening Procedure ◽  
Primary Amines ◽  
Fluorometric Method ◽  
Average Recovery

Abstract The reagent fluorescamine (4-phenylspiro- (furan-2 (3H),l´-phthalan)-3,3´-dione), which reacts selectively with primary amines in alkaline solution, has been used to determine glycine in dietetic beverages in a simple and fast fluorometric procedure. As little as 0.02% glycine can be determined. An average recovery of 100.3±3.76% was obtained for added glycine in a series of 9 determinations. The method can be used as a screening procedure to confirm or exclude the presence of glycine in dietetic beverages.

Reagent for the spectrophotometric determination of iron (II) in alkaline solution

The Analyst ◽  
1981 ◽  
Vol 106 (1269) ◽  
pp. 1348 ◽  
Author(s):  
Khalid A. Abdullah ◽  
Younis I. Hassan ◽  
A. M. AI-Daher ◽  
W. A. Bashir
Keyword(s):  
Spectrophotometric Determination ◽  
Alkaline Solution
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