Spectrophotometric determination of ascorbic acid by the modified CUPRAC method with extractive separation of flavonoids-La(III) complexes

Analytica Chimica Acta

Volumn 588, Issue 1, 2007, Pages 88-95

  Özyürek, Mustafa ^a   Güçlü, Kubilay ^a   Bektaşoǧlu, Burcu ^a   Apak, Reşat ^a  

^a ISTANBUL UNIVERSITY   (Turkey)

Author keywords

Ascorbic acid determination; Copper(II) neocuproine; CUPRAC method; Flavonoids separation; La(III) chelation; Solvent extraction; Spectrophotometry

Indexed keywords

ASSAYS; LANTHANUM COMPOUNDS; PH EFFECTS; REDOX REACTIONS; SOLVENT EXTRACTION; SPECTROPHOTOMETRY;

ASCORBIC ACID DETERMINATION; COPPER(II)-NEOCUPROINE; CUPRAC METHODS; FLAVONOIDS SEPARATION; LA(III) CHELATION;

KETONES;

ACETIC ACID ETHYL ESTER; ASCORBIC ACID; CATECHIN; CITRIC ACID; FERULIC ACID; FISETIN; FLAVANOL DERIVATIVE; FLAVONE; FLAVONOID; IRON; LANTHANUM; MORIN; NARINGENIN; OXALIC ACID; QUERCETIN; TARTARIC ACID;

ARTICLE; CALIBRATION; DRUG DETERMINATION; DRUG ISOLATION; FRUIT JUICE; LINEAR SYSTEM; OXIDATION KINETICS; OXIDATION REDUCTION REACTION; PRIORITY JOURNAL; SPECTROPHOTOMETRY; TABLET;

ACETATES; ASCORBIC ACID; BEVERAGES; CHEMISTRY, ANALYTICAL; CHEMISTRY, PHARMACEUTICAL; COPPER; FLAVONOIDS; FOOD ANALYSIS; HYDROGEN-ION CONCENTRATION; HYDROLYSIS; LANTHANUM; PHENANTHROLINES; SOLVENTS; SPECTROPHOTOMETRY; TABLETS;

EID: 33947130164     PISSN: 00032670     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.aca.2007.01.078     Document Type: Article

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