Solvation and Related Thermochemical Behavior of DL-Valine in Aqueous Univalent Electrolytes for Temperatures from 288.15 K to 323.15 K

IF 2.9 4区工程技术 Q3 CHEMISTRY, PHYSICAL International Journal of Thermophysics Pub Date : 2025-03-10 DOI:10.1007/s10765-025-03534-4

Simanta Kundu, Jit Chakraborty, Perwez Alam, Avishek Saha, Sintu Ganai, Puspal Mukherjee, Kalachand Mahali, Sanjay Roy

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Abstract

This research chiefly surveys the changes in the solubility and thermochemical behavior of DL-valine due to the existence of univalent electrolytes—namely, sodium bromide and potassium bromide—in an aqueous medium. The experiments were conducted in the temperature range from 288.15 K to 323.15 K using gravimetric analysis. Both bromides show salting-in effect which in turn implicates a large impact on the solubility of the investigated amino acid in the reaction medium. The values of the calculated thermodynamic parameters provide evidence towards the stability of the ions in the solution. The stability is mainly governed by the noncovalent processes, such as dissolution (and its stability) and short-range interactions (e.g., acid–base, solvent–solvent, and solute–solvent). This study provides insights into the molecular interactions and energetics that influence the solvation of the amino acid under diverse experimental conditions.

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dl -缬氨酸在288.15 ~ 323.15 K一价水溶液中的溶剂化及相关热化学行为

本研究主要调查了dl -缬氨酸的溶解度和热化学行为的变化，由于一价电解质的存在，即溴化钠和溴化钾在水介质中。实验温度范围为288.15 ~ 323.15 K。两种溴化物都表现出盐化效应，这反过来又意味着对所研究的氨基酸在反应介质中的溶解度有很大的影响。计算得到的热力学参数值为离子在溶液中的稳定性提供了证据。稳定性主要由非共价过程决定，如溶解（及其稳定性）和短程相互作用（如酸碱、溶剂-溶剂和溶质-溶剂）。本研究提供了在不同实验条件下影响氨基酸溶剂化的分子相互作用和能量学的见解。图形抽象

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来源期刊

International Journal of Thermophysics 物理-力学

CiteScore

4.10

自引率

9.10%

发文量

179

审稿时长

5 months

期刊介绍： International Journal of Thermophysics serves as an international medium for the publication of papers in thermophysics, assisting both generators and users of thermophysical properties data. This distinguished journal publishes both experimental and theoretical papers on thermophysical properties of matter in the liquid, gaseous, and solid states (including soft matter, biofluids, and nano- and bio-materials), on instrumentation and techniques leading to their measurement, and on computer studies of model and related systems. Studies in all ranges of temperature, pressure, wavelength, and other relevant variables are included.