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. 2021 Dec 10;13(12):2130. doi: 10.3390/pharmaceutics13122130

Figure 7.

Figure 7

The absorption spectra for investigated samples: TPPS solution in distilled water at 0.004 mg/mL, γ-Fe2O3 NPs_TPPS water suspension, RB solution at 0.004 mg/mL in distilled water. In the inset, the standard curve of TPPS absorbance versus concentration is shown.