کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6660313 | 1426222 | 2015 | 43 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation on solute-solvent interactions of glycine, l-alanine and l-valine in aqueous tetraethylammonium iodide solutions at different temperatures with reference to volumetric and acoustic measurements
ترجمه فارسی عنوان
بررسی اثر متقابل محلول-حلال گلیسین، ال-آلانین و ال-والین در محلول های تترا اتیل آمونیوم یدید آبی در دماهای مختلف با توجه به اندازه گیری های حجمی و آکوستیک
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The interactions of amino acids glycine, l-alanine and l-valine with tetraethylammonium iodide (TEAI) as a function of temperature have been investigated by a combination of volumetric and acoustic measurement. Densities (Ï) and ultrasonic speeds (u) of amino acids in aqueous solutions of TEAI have been measured at T = (288.15, 293.15, 298.15, 303.15 and 308.15) K and p = 0.1 MPa. The apparent molar volume (Vâ
), the partial molar volume (Vâ
0) and standard partial molar volumes of transfer (ÎVâ
0) for amino acids from water to aqueous TEAI solutions have been calculated from density values. Apparent molar isentropic compressibility (Kâ
,s), partial molar isentropic compressibility (Kâ
,s0), partial molar isentropic compressibility of transfer (ÎKâ
,s0) have been calculated from values of the ultrasonic speed. The pair and triplet interaction coefficients have been calculated from both properties. The linear variation of Vâ
0 with the number of carbon atoms in the alkyl chain of amino acids has been utilized to calculate the contribution of the charged end groups (NH3+,COO-), (CH2) group and other alkyl chains of the amino acids to Vâ
0. The results obtained are discussed in the light of various interactions operating in ternary systems of amino acids, water and TEAI.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 91, December 2015, Pages 346-359
Journal: The Journal of Chemical Thermodynamics - Volume 91, December 2015, Pages 346-359
نویسندگان
Suresh Kumar Sharma, Gurpreet Singh, Ramesh Kataria, Harsh Kumar,