Modelling of RP chromatographic systems

Use of OPLC to study the biological activity of organic compounds

“…(2) was that obtained by parabolic extrapolation of experimental relationships between log k and Xorg for acetonitrile mole fractions, Xorg, from 0.13 to 0.58 (Table III). (2) was that obtained by parabolic extrapolation of experimental relationships between log k and Xorg for acetonitrile mole fractions, Xorg, from 0.13 to 0.58 (Table III).…”

“…(2). (2). The first figure (Figure 2A) shows the effect of solute retention in pure water (log kw) on the relationships between G(xorg) and Xorg described by Eq.…”

“…Solute retention factors in pure water, log kw, are very important properties in reversed-phase chromatography, not only in theoretical studies [1,2] but also in QSAR or QSRS investigations [3 5]. Values of log kw are, moreover, used as measures of the lipophilicity or hydrophobicity of organic substances.…”

Application of various methods to determine the lipophilicity parameters of the selected urea pesticides as predictors of their bioaccumulation

“…[1,2] Numerous research papers that have been published during the last years confirmed that the lipophilicity has significant impact on toxicity of organic compounds including pesticides and also on their bioaccumulation. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] The relationship between bioaccumulation coefficient (K d ) of these compounds and partition coefficient (designated, e.g., as K ow or logP) determined by the use of proper method (theoretical or experimental) shows that described lipophilicity may correlate with bioaccumulation profile of pesticides according to Eq. (1):…”