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  • No : 4715
  • Displayed Date : 2020/12/23 11:32
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(GCMS) Basic knowledge of GC/MS analysis

(GCMS) Basic knowledge of GC/MS analysis
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Click here for following Basic knowledge of GC/MS analysis.
 
• What does m/z mean?
• What are the measure­ment principles of MS?
• Why are there decimal points in MS data?
• With regard to resolution; What does R > 2M mean? Specifically, just how good is R > 2M?
• What is S/N?
• Please explain the principles, advantages, and disadvantages of EI, CI, and NCI easily.
• Please explain the principles, advantages, and disadvantages of EI
• Please explain the principles, advantages, and disadvantages of CI
• Please explain the principles, advantages, and disadvantages of NCI
• What are the QPMS advantages compared to the magnetic field type?
• NCI: Why is the ion source changed between NCI and PCI?
• NCI: When analysis is done without switching the NCI and EI ion source, don't some results deteriorate compared to normal EI?
• Sensitivity: Please provide data comparing the sensitivity of TIC to the sensitivities of other GC detectors (FID, FPD, ECD).
• What are the selection guidelines for reaction gases used with CI and NCI?

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