Fig. 5. Polchlorinated biphenyl (PCB) spectra of the Oe horizon from the control plots, of the wood ash, and of the Oe horizon 1 yr after the wood ash application.
Fig. 5. Polchlorinated biphenyl (PCB) spectra of the Oe horizon from the control plots, of the wood ash, and of the Oe horizon 1 yr after the wood ash application.