کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7611616 1493518 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cooperativity between various types of polar solute-solvent interactions in aqueous media
ترجمه فارسی عنوان
تعاونی بین انواع مختلف تداخلات حلال-حلال قطبی در رسانه های آبی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Partition coefficients of seven low molecular weight compounds were measured in multiple aqueous two-phase systems (ATPSs) formed by pairs of different polymers. The ionic composition of each ATPS was varied to include 0.01 M sodium phosphate buffer (NaPB), pH 7.4 and 0.1 M Na2SO4, 0.15 M NaCl, and 0.15 M NaClO4 all in 0.01 M NaPB, pH 7.4. The differences between the solvent features of the coexisting phases in all the ATPSs were estimated from partitioning of a homologous series of dinitrophenylated-amino acids and by the solvatochromic method. The solute-specific coefficients for the compounds examined were determined by the multiple linear regression analysis using the modified linear solvation energy relationship equation. It is established that the solute specific coefficients characterizing different types of the solute-water interactions (dipole-dipole, dipole-ion, and H-bonding) for a given solute change in the presence of different salt additives in the solute specific manner. It is also found that these characteristics are linearly interrelated. It is suggested that there is a cooperativity between various types of solute-water interactions governed by the solute structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1408, 21 August 2015, Pages 108-117
نویسندگان
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