Spectrophotometric Determination of Alpha-Hydroxy Carboxylic Acids. Application to Citric Acid.

1964 ◽  
Vol 36 (1) ◽  
pp. 118-120 ◽  
Author(s):  
R. M. Matulis ◽  
J. C. Guyon
Keyword(s):  
Citric Acid ◽  
Carboxylic Acids ◽  
Spectrophotometric Determination ◽  
Hydroxy Carboxylic Acids

Enhancement of carboxylic acid degradation with sulfate radical generated by persulfate activation

2010 ◽  
Vol 61 (5) ◽  
pp. 1221-1226 ◽  
Author(s):  
J. Criquet ◽  
P. Nebout ◽  
N. Karpel Vel Leitner
Keyword(s):  
Aqueous Solution ◽  
Citric Acid ◽  
Carboxylic Acids ◽  
Sulfate Radical ◽  
Acid Degradation ◽  
Competitive Reactions ◽  
Radical Production ◽  
Persulfate Activation ◽  
Kinetics Of

The aim of this work was to investigate the generation of sulfate radical for the removal of two carboxylic acids in aqueous solution: acetic and citric acids. From photochemical and radiolytic processes, kinetics of the degradation of these two carboxylic acids was studied as a function of the pH of the solution. It was shown that the maximum of acetic acid degradation occurred at pH 5. Above this pH, competitive reactions with the carbon mineralized inhibit the reaction of with the solute. In the case of citric acid, pH has only a little effect on the kinetic of citric acid degradation. The determination of mineralization yields shows several differences depending on carboxylic acids and pH. The degradation of both carboxylic acids was also studied in the radiolysis process whether with or without persulfate addition. A comparison of the processes of sulfate radical production is presented.

Non-aqueous spectrophotometric determination of citric acid

1963 ◽  
Vol 29 ◽  
pp. 114-119 ◽  
Author(s):  
T.K. Choy ◽  
J.J. Quattrone ◽  
Miton Elefant
Keyword(s):  
Citric Acid ◽  
Spectrophotometric Determination

Spectrophotometric determination of citric acid with metol and chromium(VI)

1980 ◽  
Vol 303 (5) ◽  
pp. 411-411 ◽  
Author(s):  
R. Rama Krishna ◽  
P. Siraj ◽  
C. S. Prakasa Sastry
Keyword(s):  
Citric Acid ◽  
Spectrophotometric Determination ◽  
Chromium Vi

scholarly journals Simple and highly sensitive spectrophotometric determination of citric acid in foods.

Eisei kagaku ◽  
1987 ◽  
Vol 33 (1) ◽  
pp. 56-61 ◽  
Author(s):  
YOSHIKAZU FUJITA ◽  
ITSUO MORI ◽  
KINUKO FUJITA ◽  
TAKESHI TANAKA
Keyword(s):  
Citric Acid ◽  
Spectrophotometric Determination ◽  
Highly Sensitive

scholarly journals Quantitative determination of Levomepromazine in pharmaceuticals by spectrophotometric method as its sulfoxide

2020 ◽  
Vol 8 (1) ◽  
pp. 117-124
Author(s):  
Olena Mozgova ◽  
Mykola Blazheyevskiy
Keyword(s):  
Sodium Chloride ◽  
Citric Acid ◽  
Quantitative Determination ◽  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Present Method ◽  
Limit Of Quantification ◽  
Derivatizing Agent ◽  
Sensitive Method

The oxidative derivatization method using Diperoxyazelaic acid for the indirect spectrophotometric determination of Levomepromazine hydrochloride is presented. Diperoxyazelaic acid is introduced as a derivatizing agent for Levomepromazine, yielding the sulfoxides. This reaction product was successfully used for the spectrophotometric determination of the Levomepromazine hydrochloride. The UV spectroscopic detection of the sulfoxide proved to be a more robust and sensitive method. The elaborated method allowed the determination of Levomepromazine hydrochloride in the concentration range of 3-150 µg/mL. The limit of quantification, LOQ (10S) is 2.85 µg/mL. A new spectrophotometric technique was developed and the possibility of quantitative determination of Levomepromazine in Tisercin Solution for Injection 25mg/mL was demonstrated. The present method is precise, accurate and other excipients: anhydrous citric acid, monothioglycerol, sodium chloride did not interfere. RSD = 1.24 % (δ = –0.02 %).

Routine spectrophotometric determination of citric acid in milk powders

The Analyst ◽  
1987 ◽  
Vol 112 (8) ◽  
pp. 1173 ◽  
Author(s):  
Harvey E. Indyk ◽  
Andreas Kurmann
Keyword(s):  
Citric Acid ◽  
Spectrophotometric Determination
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