has proper occurrent part matrix-assisted laser desorption-ionisation mass spectrometry liquid chromatography-matrix-assisted laser desorption-ionisation mass spectrometry A method where a sample mixture is first separated by liquid chromatography before being vaporised and ionised using a high-energy pulsed laser, and characterised by mass-to-charge ratio and relative abundance. The sample (usually a large organic molecule or biomolecule) is held in a matrix (such as dihydrobenzoic acid) to protect it from direct laser illumination and to separate the sample molecules. LC-MALDI-MS liquid chromatography matrix-assisted laser desorption-ionisation mass spectroscopy CHMO:0000523 liquid chromatography matrix-assisted laser desorption-ionisation mass spectrometry liquid chromatography matrix-assisted laser desorption-ionization mass spectroscopy liquid chromatography-mass spectrometry liquid chromatography