Fig. 6 | Nature Communications

Fig. 6

From: Organic coating on biochar explains its nutrient retention and stimulation of soil fertility

Fig. 6

Ex situ analysis of the organic coating extracted from the biochar with 0.05 M NaOH. a Fourier-transformed infrared (FTIR) spectra of freeze-dried eluates of pristine and co-composted biochar. FTIR spectra of pure compost, pristine biochar and NaOH were measured as a reference. b Electron accepting (blue) and electron donating (red) capacity (EAC and EDC) of biochar eluates normalized to their carbon content. Error bars represent one standard deviation of at least five replicates

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