The electron paramagnetic resonance measurements of bismuth subgallate were done at room temperature.
Free radical concentrations (N) in bismuth subgallate sterilized at different conditions were determined.
It was permanently placed in a resonance cavity during the measurements of the EPR lines for both bismuth subgallate and ultramarine.
All the tested, thermally treated bismuth subgallate samples were paramagnetic exhibiting EPR bands with complex shape (Figure 3).
The exemplary EPR spectrum of bismuth subgallate heated at temperature 160[degrees]C during 120 minutes obtained at liquid nitrogen temperature is presented in Figure 4.
SerVaas: The reason I was asking you about bismuth is that, coincidentally, we have had some salesmen who suffered from flatus, and they used a product called ColoFresh, which contains
bismuth subgallate, to reduce the odor.