Gc ms是什麼意思

"GC MS" is an acronym that stands for "gas chromatography mass spectrometry." It is a technique used in analytical chemistry to separate and identify individual components in a mixture.

Here's how the process works:

  1. Gas Chromatography (GC): The sample is first vaporized and injected into a column where it is separated into its components based on their different boiling points and how strongly they interact with the column's stationary phase. The column is typically long and narrow to provide enough time for separation.

  2. Mass Spectrometry (MS): As the components exit the column, they are ionized and sent into the mass spectrometer. The mass spectrometer sorts the ions based on their mass-to-charge ratio (m/z), producing a spectrum that shows the relative abundance of each ion.

GC MS is a powerful technique because it allows for the identification of individual components in a mixture with high sensitivity and specificity. It is widely used in various fields, including forensics, pharmaceuticals, environmental science, and food science.