Question

Discuss the differences between quadrupole ion-trap mass spectrometers and Fourier transform ICR mass spectrometers.

Short answer

It differs from the linear quadrupole in that mass analysis is a discontinuous, pulsed process, whereas linear quadrupoles provide continuous transmission of ions.

Step-by-step solution

Concept

A Fourier transform (FT)ICR mass spectrometer measures mass indirectly by oscillating ions in a strong magnetic field.

Description

A Fourier transform (FT)ICR mass spectrometer measures mass indirectly by oscillating ions in a strong magnetic field.

The FT-ICR methodology is fundamentally based on ion cyclotron motion, which occurs when ions are placed inside a uniform magnetic field.

It differs from the linear quadrupole in that mass analysis is a discontinuous, pulsed process, whereas linear quadrupoles provide continuous transmission of ions.