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Table 3 Cation exchange capacity (CEC), specific surface area (SSA), viscosity and trace element content of raw and purified samples

From: Characterization and purification of Algerian natural bentonite for pharmaceutical and cosmetic applications

Sample CEC (meq/100 g) SSA (m2/g) Pb (ppm) As (ppm) Apparent viscosity(cP) Plastic viscosity (cP)
RBN 61.76 474.64 < 0.04  < 0.01 11 7
RBN-1 88.20 677.71 < 0.04 < 0.01 36 15.5