磷酸
离解(化学)
化学
离子键合
无机化学
磷酸盐
拉曼光谱
活化能
氢键
分析化学(期刊)
离子
动力学
氢铵
物理化学
分子
有机化学
物理
光学
量子力学
作者
Riad Ababneh,Ahmad Telfah,Qais M. Al‐Bataineh,Elen Tolstik,Johann Dierks,Roland Hergenröder
标识
DOI:10.1016/j.saa.2023.123594
摘要
The study investigates the formation and transportation of ionic charge carriers in phosphoric acid-water binary systems. This investigation encompasses an analysis of 1H- and 31P NMR chemical shifts, self-diffusion coefficients, spin-lattice relaxation rates, spin-spin relaxation rates, activation energies, dissociation constants, electrical conductivity, and Raman shifts, along with FTIR spectra across various water concentrations. Significantly, the maxima observed in these curves at around 0.8 water molar fraction predominantly from the unique molecular arrangement between phosphoric acid and water molecules, influenced by a hydrogen bonding network. These findings yield valuable insights into phosphate ion kinetics within body fluids, covering essential aspects like hydrogen bonding networks, ionization processes, and the energy kinetics of phosphoric dissociation. A customized semiempirical model is applied to calculate dissociated species (water, phosphoric acid, and hydronium ion) at different water contents within a wide range of water mole fraction. Furthermore, this investigation extends to the dissociation of phosphoric acid in DMEM cell culture media, offering a more precise model for phosphate ionic kinetics within body fluids, especially at nominal phosphate concentrations of approximately 1:700μL.
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