Mass spectrometry system and method employing measurement/survey

Details Mass spectrometry system and method employing measurement/survey Mass spectrometry system and method employing measurement/survey

1987-07-09

1989-06-06

Fields, Carolyn E.

Radiant energy

Ionic separation or analysis

250282, 250288, H01J 4900

Patent

active

048374342

ABSTRACT:
A gas chromatography plus mass spectrometry system implements a scan strategy in which each full range scan alternates between a normal measurement mode and a survey mode based on a block/gap map made during the previous scan. Survey mode is used within regions that were determined in the previous scan to lack signal above a predetermined threshold. Spectral data is generated during measurement mode operation. Each scan serves both measurement and mapping functions in a way that avoids mass filter jumps, since each scan is monotonic over the entire scanning range.

REFERENCES:
patent: 3639738 (1972-02-01), Laukien
patent: 4008388 (1977-02-01), McLafferty et al.
patent: 4507555 (1985-03-01), Cheng

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