نتایج جستجو برای: gc ms

تعداد نتایج: 145754  

1999

A gas chromatograph (GC) coupled with a mass spectrometer (MS) forms a powerful tool for high quality quantitative and qualitative analysis. However, GC/MS analysis of complex mixtures such as essential oils often is a time-consuming task due to limitations in techniques and instrumentation. Faster analyses of these mixtures are possible by coupling the 5973A mass selective detector (MSD) with ...

Journal: :Journal of the American Society for Mass Spectrometry 1992

Journal: :Separations 2023

In this study, star anise (Illicium verum) essential oils (SAEOs) were extracted by hydrodistillation (HD), ethanol solvent extraction (ESE), supercritical CO2 (SCD) and subcritical (SE) via electronic nose (E-nose), gas chromatography-mass spectrometry (GC-MS), GC-ion mobility (GC-IMS). GC-MS GC-IMS used to identify the volatile compounds, was also determine their concentrations. Principal com...

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