Elemental mass spectrometer
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United States of America Patent
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May 26, 2020
Grant Date -
Mar 23, 2017
app pub date -
Sep 9, 2016
filing date -
Sep 17, 2015
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Abstract
An elemental mass spectrometer uses a mass filter to select ions from ions received from an ion source and transmit the selected ions. A reaction or collision cell receives the transmitted ions and reacts or collides these with a gas to provide product ions thereby. A mass analyzer receives the product ions, analyzes them and provides at least one output based on detection of the analyzed ions. The elemental mass spectrometer is operated to provide a first output from the mass analyzer measuring ions within a first analysis range of mass-to-charge ratios including a desired mass-to-charge ratio, M, to provide a second output from the mass analyzer measuring ions within a second analysis range of mass-to-charge ratios including a mass-to-charge ratio at least 0.95 atomic mass units lower than the desired mass-to-charge ratio, (M−i), i≥0.95 and to correct the first output on the basis of the second output.
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