Polyhedral oligomeric silsesquioxane hybrid monolithic microcartridges for the determination of β-lactoglobulin in food by on-line solid-phase extraction capillary electrophoresis-mass spectrometry - Vitek, Renan; Tehrani, Tahereh; Pont, Laura; Barberán, María Vergara; Martínez, José Manuel Herrero; Benavente, Fernando; Masini, Jorge Cesar (Advances in Sample Preparation, 2025)