Automated in-syringe single-drop head-space micro-extraction applied to the determination of ethanol in wine samples

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11160%2F14%3A10281833" target="_blank" >RIV/00216208:11160/14:10281833 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0003267014004693" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0003267014004693</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.aca.2014.04.031" target="_blank" >10.1016/j.aca.2014.04.031</a>

Result language
angličtina
Original language name
Automated in-syringe single-drop head-space micro-extraction applied to the determination of ethanol in wine samples
Original language description
A novel approach of head-space single-drop micro-extraction applied to the determination of ethanol in wine is presented. For the first time, the syringe of an automated syringe pump was used as an extraction chamber of adaptable size for a volatile analyte. This approach enabled to apply negative pressure during the enrichment step, which favored the evaporation of the analyte. Placing a slowly spinning magnetic stirring bar inside the syringe, effective syringe cleaning as well as mixing of the samplewith buffer solution to suppress the interference of acetic acid was achieved. Ethanol determination was based on the reduction of a single drop of 3 mmol L-1 potassium dichromate dissolved in 8 mol L-1 sulfuric acid. The drop was positioned in the syringe inlet in the head-space above the sample with posterior spectrophotometric quantification. The entire procedure was carried out automatically using a simple sequential injection analyzer system. One analysis required less than 5 min i
Czech name
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Czech description
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Project
<a href="/en/project/EE2.3.30.0022" target="_blank" >EE2.3.30.0022: Support of establishment, development, and mobility of quality research teams at the Charles University</a>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP) S - Specificky vyzkum na vysokych skolach I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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