Fig. 4. Proton spin relaxation editing (PSRE) subspectra for Cu2+–amended de-ashed soil organic matter (SOM) (Smernik and Oades, 1999).
Fig. 4. Proton spin relaxation editing (PSRE) subspectra for Cu2+–amended de-ashed soil organic matter (SOM) (Smernik and Oades, 1999).