Polarizability parachor

For this type of isotherm, represents the maximum loading, which correlates with pore volnme among different adsorbents. The other isotherm parameters, and Po [no relation to the terms in Eqnations (14.4) or (14.5)], represent the characteristic parameter of the adsorbent and an affinity coefficient of the compound of interest, respectively. The characteristic parameter, A, defines the shape of the n versns e cnrve. The affinity coefficient, po, adapts the compound of interest to the characteristic cnrve. It is a fndge factoT that has been correlated to the ratio of molar volumes, parachors, or polarizabilities (via the Lorentz-Lorenz equation) of the componnd of interest to that of a reference component (e.g., benzene or n-heptane). These three methods are ronghly eqnivalent in accuracy. The molar volume version is = The only controversy is whether to nse the... 

Polarizability parameters, e.g. molar refractivity, molar volume, and parachor. 

Comparison of Parameters Used in Structure-Activity Studies -Leo et al. reported a comparison of parameters currently used in studies of structure-activity relationships. The activities of a variety of molecular types, as measured in four different biological systems, were correlated with octanol/ water partition coefficients, polarizabilities, molar attraction constants, parachors, adjusted parachors, and molecular weights. In the systems investigated the octanol/water partition coefficient was found to correlate best with biological activity while adjusted parachor and molar attraction constant gave the next best correlations. ... 

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