fig4
![Modelling and spectroscopic investigation of 2,4-D adsorption in soil amended with pine sawdust, paunch grass and sewage sludge biochars](https://image.oaes.cc/6722aa0f-b240-4720-a7fd-63bb7acf4a78/wecn2035.fig.4.jpg)
Figure 4. The NMR spectra of paunch grass, sewage sludge and pine sawdust biochar. NMR: Nuclear magnetic resonance.
Figure 4. The NMR spectra of paunch grass, sewage sludge and pine sawdust biochar. NMR: Nuclear magnetic resonance.
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