Figure 4.

UV/Vis absorption spectra of Ag NPs 6 and after NaCl addition 1–5 and subsequent centrifugation in the presence of different concentrations of BSA: 1—2 µg·mL⁻¹, 2—4 µg·mL⁻¹, 3—8 µg·mL⁻¹, 4—16 µg·mL⁻¹, 5—32 µg·mL⁻¹; optical path length of 1.0 cm, blank—deionized water.