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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The Hydrophobicity of Hydrocarbondissolved Benz (a) pyrene
With carcinogenic benz(a)pyrene as an example the distribution of polycyclic arenes in the hydrocarbon‐water system is shown to be independent of the hydrophobicity of hydrocarbon present as their carrier and to be constant for the series of paraffins and benzene studied in both fresh and salt water.
The hydrocarbon‐carrier hinders the penetration of benz(a)pyrene into water, the free energy of the system increases (~ by 4.5 kJ/mole) due to an increase of the hydrophobic interaction of molecules.
The increase in temperature from 20 to 50 °C influences the distribution of benz(a)pyrene in the hydrocarbon‐water system insignificantly.
Changes in standard thermodynamic parameters of the transition of polycyclic arene from the solution in alkane (benzene) into water (enthalpy Δ H°, entropy Δ S°, and free energy Δ G°) are calculated. Negative values of entropy point to the additional “structurization” of water in the course of the solution of hydrocarbons in it. Mineral salts do not influence the transition of carcinogenic arene into water.
The Hydrophobicity of Hydrocarbondissolved Benz (a) pyrene
With carcinogenic benz(a)pyrene as an example the distribution of polycyclic arenes in the hydrocarbon‐water system is shown to be independent of the hydrophobicity of hydrocarbon present as their carrier and to be constant for the series of paraffins and benzene studied in both fresh and salt water.
The hydrocarbon‐carrier hinders the penetration of benz(a)pyrene into water, the free energy of the system increases (~ by 4.5 kJ/mole) due to an increase of the hydrophobic interaction of molecules.
The increase in temperature from 20 to 50 °C influences the distribution of benz(a)pyrene in the hydrocarbon‐water system insignificantly.
Changes in standard thermodynamic parameters of the transition of polycyclic arene from the solution in alkane (benzene) into water (enthalpy Δ H°, entropy Δ S°, and free energy Δ G°) are calculated. Negative values of entropy point to the additional “structurization” of water in the course of the solution of hydrocarbons in it. Mineral salts do not influence the transition of carcinogenic arene into water.
The Hydrophobicity of Hydrocarbondissolved Benz (a) pyrene
Krasnoschekova, R. (Autor:in) / Gubergrits, M. (Autor:in)
Acta hydrochimica et hydrobiologica ; 8 ; 513-516
01.01.1980
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
British Library Online Contents | 2011