AB Sciex 4000 QTRAP Manual Perangkat Keras - Halaman 7

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enough axial velocity to overcome the exit lens barrier and are axially ejected

towards the mass spectrometer ion detector. Full spectra data can be acquired

from the ions collected in Q3 by rapidly scanning the main RF voltage.

Features of the System

The unique scan modes of both configurations can be linked to provide more

and higher quality data than either instrument alone. For example, a precursor

ion scan in transmission mode can be used as a survey scan in order to target

specific ions to be used in an EPI scan (in LIT mode). Conversion between the two

modes of operation is rapid, since it involves only the addition or removal of the

resolving DC voltages.

The 4000 QTRAP system offers the following benefits over a standard triple

quadrupole and a traditional 3-D ion trap mass spectrometer:

This section contains diagrams of the instrument and general descriptions of its

components.

Figure 1-1 Front view of the instrument

Document Number: D1000092200 B

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The proven quadrupole quantitation capabilities of the API 4000™

instrument with additional scan types: Enhanced MS, Enhanced Multiply

Charged, Enhanced Product Ion, Enhanced Resolution, MS/MS/MS, and

Time Delayed Fragmentation.

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Higher sensitivity in all RF/DC scan modes.

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Scanning to a mass range of m/z 3–2800 quadrupole mode, 50–2800 LIT

mode.

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Enhanced resolution at reduced scan speeds.

Source Exhaust

Vacuum Chamber

Detector

Hardware Guide