Difference between atomic charge weighted partial positive and negative surface areas

Definition:

DPSA2 = PPSA2 – PNSA2

PPSA2 – total charge weighted partial positively charged molecular surface area

PNSA2 - total charge weighted partial negatively charged molecular surface area

Reference:

1. D.T. Stanton, P.C. Jurs, Anal. Chem., 1990 62, 2323; D.T. Stanton, L.M. Egolf, P.C. Jurs, M.G. Hicks, J. Chem. Inf. Comput. Sci., 1992 32, 306.