fig3
From: Dissolution and fate of silver nanoparticles in the presence of natural aquatic organic matter
![Dissolution and fate of silver nanoparticles in the presence of natural aquatic organic matter](https://image.oaes.cc/18555d7c-18de-4dca-945e-630d9e0f8af6/5414.fig.3.jpg)
Figure 3. Fourier-transform infrared spectra of the humic substances (HS) extracted from Sorocabinha River water (upper, in black) and extracellular polymeric substances (EPS) extracted from the alga Raphidocelis subcapitata (lower, in red).