Solvation parameters for the 209 PCBs: calculation of physicochemical properties.
نویسندگان
چکیده
Descriptors in the Abraham equations for all the 209 PCBs have been obtained from literature chromatographic data. The six descriptors suffice for the prediction of water to octanol partitions, and for the prediction of various water to solvent and gas to solvent partitions, solubility in water, and water to micelle partition. For water to octanol, gas to dry octanol, gas to wet octanol, solubility of the solid PCBs in water, and gas to water processes, our predictive values agree excellently with the adjusted experimental values of Li et al. for sixteen particular PCBs, and with other experimental observations. We use our predictions to shed light on Henry's law constants of PCBs in water, which are the inverse of gas to water partitions.
منابع مشابه
Predictions of the physicochemical properties of amino acid side chain analogs using molecular simulation.
A candidate drug compound is released for clinical trails (in vivo activity) only if its physicochemical properties meet desirable bioavailability and partitioning criteria. Amino acid side chain analogs play vital role in the functionalities of protein and peptides and as such are important in drug discovery. We demonstrate here that the predictions of solvation free energies in water, in 1-oc...
متن کاملSolvation parameters for mercury and mercury(II) compounds: calculation of properties of environmental interest.
Descriptors have been determined for four inorganic mercury(II) species and for seventeen organic mercury(II) species, using experimental literature data. These descriptors can then be used in equations that we have already set out in order to estimate a large number of physicochemical properties. These include the water to octanol partition coefficient and the gas to water partition coefficien...
متن کاملTheoretical calculations of solvation 12-Crown-4 (12CN4) in aqueous solution and its experimental interaction with nano CuSO4
Theoretical study of the electronic structure, and nonlinear optical properties (NLO) analysis of 12-crown-4were done using Density Functional Theory (DFT) evaluations at the B3LYP/6-311G (d,p) level of theory. The optimized structure is nonlinear compound as indicated from the dihedral angles were presented. The calculated EHOMO and ELUMO energies of 12-Crown-4 (12CN4) ca...
متن کاملInvestigation of Water Cluster ((H2O)n , n = 2-6) in Aspect of Structures, Energies and Thermodynamic Properties by Ab Initio methods
The intermolecular forces between water molecules are of great importance in many areas of chemistry including solvation, solution chemistry, and biochemistry. As a result of this (H2O)n systems have received a great significant of attention, both experimental and theoretical. All calculation of this study are carried out by Gaussian 98 soft ware. Geometry optimization for each cluster were be ...
متن کاملTheoretical calculations of solvation 12-Crown-4 (12CN4) in aqueous solution and its experimental interaction with nano CuSO4
Theoretical study of the electronic structure, and nonlinear optical properties (NLO) analysis of 12-crown-4were done using Density Functional Theory (DFT) evaluations at the B3LYP/6-311G (d,p) level of theory. The optimized structure is nonlinear compound as indicated from the dihedral angles were presented. The calculated EHOMO and ELUMO energies of 12-Crown-4 (12CN4) ca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of environmental monitoring : JEM
دوره 7 4 شماره
صفحات -
تاریخ انتشار 2005