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Learn how headspace sampling works for GC and GC/MS analysis of volatile compounds. Find out the benefits, key parts, and important factors of headspace sampling for different sample types and matrices.
Agilent offers headspace vials and caps in various sizes, styles, and materials for headspace gas chromatography analysis. Learn how to choose the best headspace vial for your application and find the right headspace vial selector tool.
Learn how to calculate the headspace volume for liquids in glass bottles to avoid overpressure and bottle bursting. See examples of water, alcohol and sugar solutions and their effects on the pressure increase.
Ullage or headspace is the unfilled space in a container, particularly with a liquid. [1] Etymology. The word ullage comes from the Latin word oculus, used by the Romans to refer to a barrel cork hole. This word was, in turn, taken in medieval French as oeil, from which a verb ouiller was created, meaning to fill a barrel to full capacity.
Headspace gas chromatography uses headspace gas—from the top or "head" of a sealed container containing a liquid or solid brought to equilibrium —injected directly onto a gas chromatographic column for separation and analysis.
At filling, oxygen concentration in bottle headspace can range from 1.5 to 2.5 mg/L. 1 The oxygen concentration depends on three factors: wine volume, headspace volume and oxygen concentration in the headspace.
1 de sept. de 2015 · Headspace sampling is a simple, green method for volatile fractionation. Abstract. We review the use of static headspace (S-HS) and dynamic headspace (D-HS) techniques for the extraction of volatiles from different matrices.
