Perspectives on using ethanol as an internal standard for the quantification of volatile compounds in alcoholic products by headspace SPME-GC/FID without sample preparation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10472931" target="_blank" >RIV/00216208:11310/23:10472931 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=gQIwKouH71" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=gQIwKouH71</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00706-023-03108-w" target="_blank" >10.1007/s00706-023-03108-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Perspectives on using ethanol as an internal standard for the quantification of volatile compounds in alcoholic products by headspace SPME-GC/FID without sample preparation

Popis výsledku v původním jazyce

For the first time, the beneficial &quot;Ethanol as Internal Standard (IS)&quot; method developed for the analysis of alcoholic products was tested in headspace mode of solid-phase microextraction gas chromatography with flame ionization detector (SPMEGC/FID) and compared with the traditional IS method. The extraction and separation conditions were optimized for the analysis of 10 volatile congeners prescribed in European legislation: acetaldehyde, methyl acetate, ethyl acetate, methanol, butan-2-ol, propan-1-ol, 2-methylpropan-1-ol (isobutanol), butan-1-ol, 1,1-diethoxyethane (acetal), and 3-methylbutan-1-ol (isoamylol). To evaluate the accuracy of the compared methods, three real alcoholic product samples with ethanol content of 20%, 40%, and 80% v/v were spiked with gravimetrically prepared standard solutions to calculate recoveries. The obtained data indicates that the suggested method can be employed as a robust and accurate tool for SPME analysis of alcoholic products with low ethanol content, such as wines. It was also observed that an increase in ethanol content in the matrix affects the accuracy of the &quot;Ethanol as IS&quot; method, potentially due to non-linearity of analyte extraction. However, in the case of wine sample, the &quot;Ethanol as IS&quot; method showed significantly better results compared to the traditional approach. The precision of the suggested method, evaluated using relative standard deviations (RSD) of obtained concentrations was found to be comparable to that of the traditional method.

Název v anglickém jazyce

Perspectives on using ethanol as an internal standard for the quantification of volatile compounds in alcoholic products by headspace SPME-GC/FID without sample preparation

Popis výsledku anglicky

For the first time, the beneficial &quot;Ethanol as Internal Standard (IS)&quot; method developed for the analysis of alcoholic products was tested in headspace mode of solid-phase microextraction gas chromatography with flame ionization detector (SPMEGC/FID) and compared with the traditional IS method. The extraction and separation conditions were optimized for the analysis of 10 volatile congeners prescribed in European legislation: acetaldehyde, methyl acetate, ethyl acetate, methanol, butan-2-ol, propan-1-ol, 2-methylpropan-1-ol (isobutanol), butan-1-ol, 1,1-diethoxyethane (acetal), and 3-methylbutan-1-ol (isoamylol). To evaluate the accuracy of the compared methods, three real alcoholic product samples with ethanol content of 20%, 40%, and 80% v/v were spiked with gravimetrically prepared standard solutions to calculate recoveries. The obtained data indicates that the suggested method can be employed as a robust and accurate tool for SPME analysis of alcoholic products with low ethanol content, such as wines. It was also observed that an increase in ethanol content in the matrix affects the accuracy of the &quot;Ethanol as IS&quot; method, potentially due to non-linearity of analyte extraction. However, in the case of wine sample, the &quot;Ethanol as IS&quot; method showed significantly better results compared to the traditional approach. The precision of the suggested method, evaluated using relative standard deviations (RSD) of obtained concentrations was found to be comparable to that of the traditional method.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monatshefte für Chemie - Chemical Monthly

ISSN

0026-9247

e-ISSN

1434-4475

Svazek periodika

154

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

5

Strana od-do

987-991

Kód UT WoS článku

001040835900001

EID výsledku v databázi Scopus

2-s2.0-85166299678