88.4 Surface adsorption of solution 8.4.1 The surface phenomena of solution interaction A-B>A-AA-B<A-A Surface concentration Surface tension adsorptio c(mmolL) surface adsorption: the concentration difference between surface and bulk solution The excess surface concentration(1) the concentration difference of solute per unit area in surface layer and in the bulk solution(mol m-2)interaction A-B > A-A A-B < A-A Surface concentration Surface tension adsorption surface adsorption: the concentration difference between surface and bulk solution. The excess surface concentration (): the concentration difference of solute per unit area in surface layer and in the bulk solution. (mol m-2 ) 8.4.1 The surface phenomena of solution: §8.4 Surface adsorption of solution