¹⁴C-labeled organic amendments: Characterization in different particle size fractions and humic acids in a long-term field experiment.

Thus, the highly significant differences between the different origins (particle-size fractions and cropping systems) of HAs reflect both C pool size and 14 C concentration within the pools. 4.3 Mid-infrared spectroscopy of HAs The mid-infrared spectra in Fig. 1 show qualitative differences between HAs from silt- and clay-sized particles.

also in 132,142 other papers