题目内容

The mass spectrometer does not include ( ) .

A. The quadrupole mass spectrometer
B. The time-of-flight mass spectrometer
C. Double focus mass spectrometer
D. Power quality analyzer

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Among the following methods, which can determine the molecular mass?

A. Ultraviolet spectrum
B. Infrared spectrum
C. Luminescence Spectrometry
D. Mass spectrometry

For compounds composed of C, H, O, and N, the mass numbers of the molecular ion peaks of the mass spectrum are even numbers.

The peak with the largest mass-to-charge ratio in the mass spectrum must be the molecular ion peak.

The square of the ion's radius of motion in the mass spectrometer is proportional to the strength of the magnetic field.