Fig. 5From: A new simple method for determining the critical micelle concentration of surfactants using surface plasmon resonance of silver nanoparticlesThe SPR spectra of AgNPs in aqueous solutions of the different concentrations of SDS (a) and plot of the absorbance intensity of AgNPs as a function of molar concentration of SDS at 410 nm (b). Conditions: 2.0 mL AgNO3 solution (2.0 × 10−3 mol L−1); 1.0 mL NaBH4 (1.0 × 10−2 mol L−1); 2.0 mL KH2PO4 buffer solution (pH 8.0); appropriate volumes of SDS solutions of (a) 0.0, (b) 2.0, (c) 4.0, (d) 6.0, (e) 7.0, (f) 8.0, (f) 8.5, (g) 9.0, (h) 10.0, (i) 11.0, and (j) 12.0 mmol L−1 Back to article page