Mass spectrometry

Question 1

1. Which of the following types of mass spectrometers involve
   a single path for ions through the instrument, followed by
   the ions striking a detector where they are destructively
   detected?

a. Trapping type
b. Beam type
c. Mass-selective ejection type
d. Ion-cyclotron resonance type

Answer 1

b. Beam type

Question 2

2. In mass spectrometry, the sum of all ions produced displayed as a function of time represents:

a. product ion.
b. extracted ion profile.
c. mass spectrum.
d. total ion chromatogram

Answer 2

d. total ion chromatogram

Question 3

3. Which type of ionization technique uses an electron beam
   to ionize the reagent gas and produce a reactive species as
   a result of ion-molecule reactions?

a. Electron
b. Chemical
c. Electrospray
d. Inductively coupled plasma

Answer 3

b. Chemical

Question 4

4. Inductively coupled plasma mass spectrometry is typically
   used for:

a. determination of trace elements.
b. identification of a protein.
c. drug identification.
d. isotopic labeling of molecules

Answer 4

a. determination of trace elements.

Question 5

5. The ionization technique most commonly used in mass
   analyzers coupled with gas chromatography is:

a. electrospray ionization.
b. chemical ionization.
c. matrix-assisted laser desorption/ionization.
d. electron ionization.

Answer 5

d. electron ionization.

Question 6

6. The mass spectrometer most commonly used for quantitative analysis is the:

a. quadrupole mass spectrometer.
b. time-of-flight instrument.
c. magnetic sector mass spectrometer.
d. linear ion trap mass spectrometer.

Answer 6

a. quadrupole mass spectrometer.