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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.

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