Understanding the demetallization of nitrogen-rich hydrothermal liquefaction biocrudes by FTICR mass spectrometry: Recalcitrant effect of metalloporphyrins and basic nitrogenates - Muhammad Salman Haider; Stefano Chiaberge; Andrea Siviero; Mehmed Akif Isik; Daniele Castello; Thomas Helmer Pedersen; Lasse Aistrup Rosendahl (Fuel, 2023)