Comparison of headspace–SPME and SPME-Arrow–GC–MS methods for

Mar 21, 2019 · A new solid phase microextraction (SPME)-Arrow method was evaluated for the analysis of volatile compounds in kanari-aekjeot, a Korean traditional salt–fermented sand lance sauce, and compared it to the standard headspace–SPME method. Factors observed to affect the extraction, including the fiber used, extraction temperature, extraction time, and NaCl concentration were carefully optimized

Characterization of volatile aroma compounds after in-vial

The volatile components of 11 quinoa samples were characterized by headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS). A total of 120 peaks were detected, with 61 compounds identified.

Determination of chlorinated volatile organic compounds in

The general method of determining volatile organic compounds (VOCs) in aqueous solutions is headspace analysis (HSA), which is based on various modes of the gas-phase extraction of analytes and

Analysis of Volatile Organic Compounds in Water - Aijiren

sic advantages of static headspace in terms of ease of use and robustness. Experimental Conditions Sample Preparation Analyses were performed using 10-mL water samples. Samples were placed in a 20-mL headspace vial (P/N ) containing 7 g sodium sulfate. The samples were spiked with an internal standard solution. The vials were tightly

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Analytical Solutions for Challenges in Headspace GC-MS

in favor of the gas phase, such as the temperature of the vial and the matrix composition,1 allow for the maximization of the concentration of the target analytes in the headspace, increasing the efficiency of the extraction and the sensitivity of the method. Procedure A Plunger stoppers (2 stoppers/vial) were put into 20 mL HS vials.

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An Introduction To Headspace Sampling In Gas Chromatography

If we put a sample of this perfume into a sealed vial and heat it to a moderate temperature (say 60 °C) for a period of time, what happens to the various molecules in the perfume inside the vial? Consider Figure 2. The more volatile compounds will tend to move into the gas phase (or headspace) above the perfume sample.

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Vials for gas chromatography (headspace vials) are available in different sizes and come with crimp or screw finish. Headspace vials have to withstand high internal pressure. Therefore, the wall thickness of headspace vials is higher compared to standard

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