Device and method for mass spectrometric analysis of substance mixtures by coupling capillary electrophoretic separation (CE) with electrospray ionization (ESI)
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United States of America Patent
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Apr 9, 1996
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N/A
app pub date -
May 2, 1995
filing date -
May 2, 1994
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Expired
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Abstract
The invention relates to a device and a method for mass-spectrometric analysis of substance samples which have been separated by capillary electrophoresis, particularly proteins, proteoglycanes or other protein conjugates, with ionization of the substance samples by a particularly substance-saving form of electrospraying. A method of 'microspraying' is used which permits a flow of spray liquid of only several tens of nanoliters per minute in stable spray operation. The invention consists in a loose coupling of the spray capillary to the electrophoresis capillary in a liquid environment.
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