Figure 7.

Schematic illustration of dye assay quantification. (A) Quantification of carboxylic density on glassy carbon by pH-dependent adsorption/desorption. (B) Quantification of sulfonate density by ionic screening effect. (assumed charge/dye = 1:1).

Zhan et al. Nanoscale Research Letters 2013 8:279   doi:10.1186/1556-276X-8-279
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