has proper occurrent part tandem mass spectrometry liquid chromatography-tandem mass spectrometry two-dimensional liquid chromatography-tandem mass spectrometry A method where a sample mixture is first separated sequentially using two different liquid chromatography columns (commonly, ion-exchange followed by reversed-phase) before being analysed by two mass spectrometers in series. CHMO:0001836 2DLC/MS/MS 2DLC-MS2 2DLCMSMS FIX:0001156 2009-05-29T11:58:40Z https://orcid.org/0000-0001-5985-7429 two-dimensional chromatography-tandem mass spectroscopy two-dimensional chromatography tandem mass spectroscopy 2DLC-MS-MS two-dimensional liquid chromatography tandem mass spectrometry 2DLC-MS/MS 2DLC-MSMS 2D-LC-MS/MS two-dimensional liquid chromatography-mass spectrometry