Figure 7: Three dyes are observed in the CHES/β-cyclodextrin capillary electrophoresis separation method of an extracted sample of ink #7 at 214 nm. Inset is an ultraviolet-visible spectrum observed at 3.9 minutes.
Figure 7: Three dyes are observed in the CHES/β-cyclodextrin capillary electrophoresis separation method of an extracted sample of ink #7 at 214 nm. Inset is an ultraviolet-visible spectrum observed at 3.9 minutes.