The present invention relates to a method for presenting an analyte of a liquid sample as an MS-analyte to a mass spectrometer. More particularly, the method comprises the steps of applying a liquid sample containing the analyte to a sample inlet port of a microchannel structure of a microfluidic device,...http://www.google.es/patents/US7148476?utm_source=gb-gplus-sharePatente US7148476 - Microfluidic system
