کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
675217 1459599 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interactions in l-alanine-/l-proline-/l-valine-/l-leucine-aqueous KCl/KNO3 systems at different temperatures: An isentropic compressibility study
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Interactions in l-alanine-/l-proline-/l-valine-/l-leucine-aqueous KCl/KNO3 systems at different temperatures: An isentropic compressibility study
چکیده انگلیسی
Ultrasonic velocity and density values of amino acids: l-alanine/l-proline/l-valine/l-leucine in 2.0 M aqueous KCl and 2.0 M aqueous KNO3 solutions have been measured for several concentrations of amino acids at different temperatures: 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15 K. Using ultrasonic velocity and density data, the thermodynamic parameters such as isentropic compressibility (κs), change in isentropic compressibility (Δκs) and relative change (Δκs/κ0) in isentropic compressibility have been computed. The trends in the behaviour of κs, Δκs and Δκs/κ0 with changes in the concentration of amino acids/zwitterions as well as in temperature have been discussed in terms of zwitterions-ions, zwitterions-water dipoles, ions-ions, ions-water dipoles intermolecular/interionic interactions operative in the said systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 483, Issues 1–2, 10 February 2009, Pages 45-48
نویسندگان
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