Inverse gas-chromatographic method for the estimation of the vapour pressure of less volatile compounds

1993 ◽  
Vol 347 (8-9) ◽  
pp. 365-367 ◽  
Author(s):  
S. D. Bhagat
Keyword(s):  
Volatile Compounds ◽  
Vapour Pressure ◽  
Chromatographic Method ◽  
Gas Chromatographic Method

Aromatic Volatile Composition of Celery and Celeriac Cultivars

HortScience ◽  
1990 ◽  
Vol 25 (5) ◽  
pp. 556-559 ◽  
Author(s):  
Fredy Van Wassenhove ◽  
Patrick Dirinck ◽  
Georges Vulsteke ◽  
Niceas Schamp
Keyword(s):  
Volatile Compounds ◽  
Chromatographic Method ◽  
Apium Graveolens ◽  
Volatile Components ◽  
Two Dimensional ◽  
Qualitative Composition ◽  
Volatile Composition ◽  
Wide Range ◽  
Gas Chromatographic Method ◽  
Identification And Quantification

A two-dimensional capillary gas chromatographic method was developed to separate and quantify aromatic volatiles of celery in one analysis. The isolation, identification, and quantification of the volatile compounds of four cultivars of blanching celery (Apium graveolens L. var. dulce) and six cultivars of celeriac (Apium graveolens L. var. rapaceum) are described. The qualitative composition of Likens-Nickerson extracts of both cultivars is similar. The concentration of terpenes and phthalides, the key volatile components, found in various cultivars of both celery and celeriac varied over a wide range.

scholarly journals Single-Laboratory Validation of a Gas Chromatographic Method of Direct Determination of Volatile Compounds in Spirit Drinks: Need for an Improved Interlaboratory Study

2019 ◽  
Vol 102 (2) ◽  
pp. 669-672 ◽  
Author(s):  
Siarhei V Charapitsa ◽  
Svetlana N Sytova ◽  
Anton L Korban ◽  
Lidia N Sobolenko
Keyword(s):  
Volatile Compounds ◽  
Chromatographic Method ◽  
Internal Standard ◽  
Direct Determination ◽  
Relative Bias ◽  
Interlaboratory Study ◽  
Detector Response ◽  
Gas Chromatographic Method ◽  
Single Laboratory

Abstract Background: The quality and safety control of an alcoholic drink is mainly the establishment of its chemical content, particularly the quantity of volatile compounds. Objective: A single-laboratory validation of a gas chromatographic method of direct determination of volatile compounds in spirit drinks was conducted. The discussed method applies ethanol, the major volatile component of an alcoholic beverage, as an internal standard. Possible algorithms of method validation based on interlaboratory study were proposed and described. Methods: Seven standard solutions of the following volatile compounds were prepared gravimetrically in 40% (v/v) water–ethanol solution: acetaldehyde, methyl acetate,ethyl acetate, methanol, 2-propanol, 1-propanol, isobutanol, 1-butanol, and isoamylol. Each sample wasmeasured with the proposed method 30 times in repeatability conditions. Results: Flame ionization detector response was linearly correlated with assigned concentrations at a range of 2 to5000 mg/L of absolute alcohol (AA) with coefficients of determination (R2)more than 0.995 for all analyzed components. Repeatability (RSDr ≤ 4.5%; RSDr ≤ 2.0%), reproducibility (RSDR ≤ 5.0%; RSDR ≤ 2.0%), and trueness (relative bias ≤ 2.6%; relative bias ≤ 1.4%) were obtained for low (10–25 mg/L AA for methanol and 2–10 for othervolatiles) and high (25–5000 mg/L AA for methanol and 10–5000 for other volatiles) ranges of concentrations, correspondingly. Conclusions: The method increases the reliability of measurements and eliminates manual proceduresof internal standard addition into both calibrationstandard solutions and spirit drinks.

Headspace gas chromatographic method for determining volatile compounds in infant formulas

2004 ◽  
Vol 1046 (1-2) ◽  
pp. 235-239 ◽  
Author(s):  
M Romeu-Nadal ◽  
A.I Castellote ◽  
M.C López-Sabater
Keyword(s):  
Volatile Compounds ◽  
Chromatographic Method ◽  
Infant Formulas ◽  
Headspace Gas ◽  
Gas Chromatographic Method

Use of spinning band distillation equipment for fractionation of volatile compounds of Copaifera oleoresins for developing a validated gas chromatographic method and evaluating antimicrobial activity

2018 ◽  
Vol 33 (2) ◽  
pp. e4412 ◽  
Author(s):  
Victor Pena Ribeiro ◽  
Caroline Arruda ◽  
Jonas Joaquim Mangabeira da Silva ◽  
Jennyfer Andrea Aldana Mejia ◽  
Niege Araçari Jacometti Cardoso Furtado ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Volatile Compounds ◽  
Chromatographic Method ◽  
Gas Chromatographic Method ◽  
Distillation Equipment
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