454 = 0.1089 + 0.5953 = 0.7042 = 0.0019 + 0.039 = 0.0409 C/N ratio = : C/N ratio = 17.22 1/4 (g-VS/g-VS 5 g-VS/L 10.2 0 3 5 10 15% (v/v) Gas tight syringe 3 mL mL mL (Gas chromatography, GC) -10 0.1