Determination of the titratable acidity and the pH of wine based on potentiometric flow injection analysis.
Talanta
; 111: 134-9, 2013 Jul 15.
Article
en En
| MEDLINE
| ID: mdl-23622536
A FIA system using a pH-sensitive detector based on a graphite/quinhydrone/silicone composite electrode was applied to determine sequentially the titratable acidity and the pH of wine, as well as the sum of calcium and magnesium ions. For all measurements the same FIA configuration was used employing different carrier solutions. The results for the determination of acidity and pH are in good agreement with those obtained by classical potentiometric titrations and by pH measurements using a conventional glass electrode. The standard deviation was less than 1.5% for both kinds of measurements and the sample volume was 150 µL. The method allows about 40 determinations of titratable acidity per hour and 30 pH measurements per hour. The titration method can be adjusted to the legal requirements in USA and Europe.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Potenciometría
/
Vino
/
Análisis de Inyección de Flujo
/
Conductometría
Idioma:
En
Revista:
Talanta
Año:
2013
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Países Bajos