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

被引：1

作者：

Roy, Lakshmi N. ^{[1
]}

Roy, Rabindra N. ^{[1
]}

LeNoue, Sean R. ^{[1
]}

Denton, Cole E. ^{[1
]}

Fuge, Michael S. ^{[1
]}

Dunseth, Craig D. ^{[1
]}

Roy, Chandra N. ^{[1
]}

Hayden, Shawn M. ^{[1
]}

Wollen, Joshua T. ^{[1
]}

Sreepada, Kripa ^{[1
]}

机构：

[1] Drury Univ, Hoffman Dept Chem, Springfield, MO 65802 USA

来源：

JOURNAL OF SOLUTION CHEMISTRY | 2009年 / 38卷 / 04期

关键词：

Buffers; DIPSO; Liquid junction; Ionic strength; Emf; Zwitterions; pH; Acidity function; 2ND DISSOCIATION-CONSTANT; HYDROGEN-ION BUFFERS; THERMODYNAMIC CONSTANTS; BIOLOGICAL-RESEARCH; RANGE; 55-DEGREES-C; ACIDS; TRICINE; VALUES; MEDIA;

D O I：

10.1007/s10953-009-9379-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 A degrees C including 37 A 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 mola <...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 A degrees C after correcting the liquid junction potentials with the flowing junction cell.

引用

页码：459 / 469

页数：11

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