5至55摄氏度下两性离子化合物DIPSO生理pH值的缓冲标准液

Buffer Standards for the Physiological pH of the Zwitterionic Compound, DIPSO from 5 to 55 degrees C.

作者信息

Roy Lakshmi N, Roy Rabindra N, Lenoue Sean R, Denton Cole E, Fuge Michael S, Dunseth Craig D, Roy Chandra N, Hayden Shawn M, Wollen Joshua T, Sreepada Kripa

出版信息

J Solution Chem. 2009 Apr 1;38(4):459-469. doi: 10.1007/s10953-009-9379-2.

DOI:10.1007/s10953-009-9379-2

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2771870/

Abstract

The values of the second dissociation constant, pK(2), and related thermodynamic quantities of 3-[N,N-bis (2-hydroxyethyl)amino]-2-hydroxypropanesulfonic acid (DIPSO) have already been reported over the temperature range 5 to 55 degrees C including 37 degrees C. This paper reports the pH values of four NaCl-free buffer solutions and four buffer composition containing NaCl salt at I = 0.16 mol.kg(-1). Conventional pa(H) values are reported for all eight buffer solutions. The operational pH values have been calculated for four buffer solutions recommended as pH standards, at 25 and 37 degrees C after correcting the liquid junction potentials with the flowing junction cell.

摘要

3-[N,N-双（2-羟乙基）氨基]-2-羟基丙烷磺酸（DIPSO）的第二解离常数pK(2)的值以及相关热力学量已在5至55摄氏度（包括37摄氏度）的温度范围内报道。本文报道了四种无氯化钠缓冲溶液以及四种在I = 0.16 mol.kg(-1)时含氯化钠盐的缓冲溶液组成的pH值。报道了所有八种缓冲溶液的常规pa(H)值。在用流动接界电池校正液接电位后，计算了推荐作为pH标准的四种缓冲溶液在25和37摄氏度时的操作pH值。

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