Determination of Copper in Different Ethanolic Matrices Using a Chloropropyl Silica Gel Modified with a Nanostructured Cubic Octa(3-aminopropyl)octasilsesquioxane

Table 2

Structural parameters for ClPS and SGAPC.

Sample	Surface Area; (m^2 g^−1)	Pore volume; (cm^3 g^−1)	Average pore size; 4V/A
ClPS	380.64	0.59	42.8
SGAPC	278.10	0.25	25.4