Materiały konferencyjne SEP 2026

The effect of oxygen on thermally treated plant materials EPR spectrum of wood carbonized at 800 o C. -15 3440 3460 Pole magnetyczne [Gs] -10 -5 0 5 10 15 20 Sygnał EPR [a.u.] -20 3480 3500 3520  0,0003 760 Torr 2 10 Torr -2  Atsarkin V. A. et al.: 2001, Journal Magnetic Resonance, 149, 85-89. Free radicals in large aromatic units of carbonized wood interact with oxygen molecules O 2 what influences linewidth. The narrow EPR line of thermally treated wood was measured at the low pressure 2  10 -2 Torr (the low oxygen content in the environment). The broad EPR line of thermally treated wood was measured at the higher pressure of 760 Torr (the higher oxygen content in the environment). Application in studies of oxygen in biological systems.