In regards to Gas Chromatography/Mass Spectrometry, match each statement with th

Question

In regards to Gas Chromatography/Mass Spectrometry, match each statement with the term it most closely matches.

1. This ionization technique is used to analyze large, non-volatile molecules. Ions are formed by placing the analyte in an excess of UV-absorbing molecules, followed by irradiation with a laser.
2. Analyzer in which ions are collected in a 3D space and selectively ejected to generate a complete mass spectrum.
3. Analyzer that is based upon the deflection of ions in a magnetic field.
4. Mass analyzer in which ions are separated by their velocity. Ions sequentially strike the detector in order of increasing m/z.
5. The most abundant fragment results in this mass spectrum feature.
6. General term used to describe ionization techniques that produces many ion fragments. Electron ionization is an example of this.
7. Feature in a mass spectrum that is due to a singly charged ion that has the same mass as the analyte.

A Ion-Trap B Hard ionization C Electrospray Ionization (ESI) D Time of Flight (TOF) E Matrix-Assisted Laser Desorption/Ionization (MALDI) F Molecular ion peak G Soft ionization H Base peak I Fast atom bombardment (FAB) J Quadrupole K Magnetic sector

Explanation / Answer

1. E

2. A

3. K

4. I

5.H

6.G

7.F

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