https://itq.upv-csic.es/wp-content/uploads/2025/09/logos.unidos.1.color_.newdate-1-400x73.png00KCB-Studiohttps://itq.upv-csic.es/wp-content/uploads/2025/09/logos.unidos.1.color_.newdate-1-400x73.pngKCB-Studio2017-04-19 18:41:432017-04-19 18:41:43Assessment of the surface chemistry of wood-derived biochars using wet chemistry, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy