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Static Headspace Gas Chromatography - Wiley Online Library

3.6.2 Headspace Sampling with Split or Splitless Introduction 90 3.6.3 Comparison of Split and Splitless Headspace Sampling 93 3.6.4 Band Broadening During Sample Introduction 96 3.6.5 Influence of Temperature on Band Broadening 99 3.6.5.1 Conclusions 101

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Headspace Oxygen in Sample Vials Affects Volatiles

Headspace oxygen in sample vial for the purge-and-trap dynamic headspace/gas chromatography method oxidizes meat if held hours before purging, influences volatile profiles, and misrepresents the true composition of volatiles. Helium flush and helium flush plus oxygen absorber were used to eliminate residual oxygen and minimize oxidative changes in meat during sample

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Headspace Technique - an overview | ScienceDirect

This approach uses a small volume of liquid sample (5–50 μl) placed into a standard headspace vial and heated to completely vaporize the sample. This approach has the benefit of avoiding the liquid–headspace equilibrium that must be considered in other headspace techniques ; however, the small volume of sample used makes this technique appropriate only where very low

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Wiley Online Library - Analysis of flavour compounds in beer with extruded sorghum as an adjunct using headspace

and was exposed to the headspace of the vial in a thermostatic bath at 40 C for 30min under continuous stirring at 250rpm. The fibre were then removed from the sample vial and immedi-ately inserted into the heated injector of the GC-MS (250 C) with a 5min

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Taylor & Francis Online: Peer-reviewed Journals - Determination of ethanol in blood using headspace

Initially, the blood sample was prepared by diluting 1: 5 with deionised water and then blank blood sample (1 mL) were placed into a clean glass headspace vial containing 1 mL of 80 mg/mL propan- 1-ol as an internal standard (IS).