IONIZATION ENTHALPIES OF SOME COMMON ZWITTERIONIC HYDROGEN-ION BUFFERS (HEPES, PIPES, HEPPS AND BES) FOR BIOLOGICAL-RESEARCH

被引：17

作者：

ROIG, T

BACKMAN, P

OLOFSSON, G

机构：

[1] LUND UNIV,CTR CHEM,DIV THERMOCHEM,POB 124,S-22100 LUND,SWEDEN

[2] UNIV BARCELONA,FAC ODONTOL,UNITAT BIOFIS,E-08907 LHOSPITALET LLOBR,SPAIN

来源：

ACTA CHEMICA SCANDINAVICA | 1993年 / 47卷 / 09期

关键词：

D O I：

10.3891/acta.chem.scand.47-0899

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The ionization enthalpy DELTA(i)H has been determined for N-(2-hydroxyethyl)-piperazine-N'-(2-ethanesulfonic acid) (HEPES), piperazine-N,N'-bis(2-ethanesulfonic acid (PIPES), N-(2-hydroxyethyl)piperazine-N'-(3-propanesulfonic acid) (HEPPS) and N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid (BES) at three temperatures (288.15, 298.15 and 310.15 K). For three of the buffers (HEPES, PIPES and BES), standard ionization enthalpies at infinite dilution were derived from the variation of DELTA(i)H with ionic strength at 298.15 K.

引用

页码：899 / 901

页数：3

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