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A Mobility Filter for the Detection and Identification of Charged Species in Complex Liquid Mixtures by ENMR Phase Difference Spectroscopy
Author(s) -
Heil Stefan R.,
Holz Manfred
Publication year - 1996
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199617171
Subject(s) - electrophoresis , spectroscopy , phase (matter) , analytical chemistry (journal) , nuclear magnetic resonance spectroscopy , chemistry , molecule , materials science , nuclear magnetic resonance , chromatography , physics , stereochemistry , organic chemistry , quantum mechanics
In situ electrophoresis is combined with the selectivity of NMR spectroscopy in electrophoretic NMR (ENMR). In a simple new ENMR experiment the signals of ions and electrically charged molecules or aggregates are filtered from the 1D NMR spectrum of a complex liquid mixture. Only the signals of charged species remain in a phase difference spectrum, facilitating the detection and identification of these particles, even when 2D ENMR methods fail.