Additional file 2.

Effect of CO flow rate on nanoparticle spectral profile. Normalized UV-visible spectra of nanoparticles synthesized from a chloroauric acid concentration of 0.03 mM aerated at flow rates of 16.9, 25.5, and 37.0 mL/min corresponding to A, B, and C, respectively. The effect of the gas flow rate during synthesis is illustrated by a comparison of the three spectra.

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Young et al. Nanoscale Research Letters 2011 6:428   doi:10.1186/1556-276X-6-428