Comparison of methods for characterizing nonideal solute self-association by sedimentation equilibrium.
Comparison of methods for characterizing nonideal solute self-association by sedimentation equilibrium.
复制标题
通过沉降平衡表征非理想溶质自缔合的方法比较。
DOI:
10.1016/j.bpj.2009.05.028
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发表时间:
2009
影响因子:
3.4
通讯作者:
Scott DJ
中科院分区:
文献类型:
--
作者:
Scott DJ
We have examined in detail analytical solutions of expressions for sedimentation equilibrium in the analytical ultracentrifuge to describe self-association under nonideal conditions. We find that those containing the radial dependence of total solute concentration that incorporate the Adams-Fujita assumption for composition-dependence of activity coefficients reveal potential shortcomings for characterizing such systems. Similar deficiencies are shown in the use of the NONLIN software incorporating the same assumption about the interrelationship between activity coefficients for monomer and polymer species. These difficulties can be overcome by iterative analyses incorporating expressions for the composition-dependence of activity coefficients predicted by excluded volume considerations. A recommendation is therefore made for the replacement of current software packages by programs that incorporate rigorous statistical-mechanical allowance for thermodynamic nonideality in sedimentation equilibrium distributions reflecting solute self-association.
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影响因子:
2.9
作者:
HILL, TL;CHEN, Y
通讯作者:
CHEN, Y
影响因子:
3.4
作者:
P. Wills;M. P. Jacobsen;D. Winzor
通讯作者:
D. Winzor
DOI:
10.1007/bfb0114086
发表时间:
1995
期刊:
The Journal of Physical Chemistry
影响因子:
--
作者:
P. Voelker
通讯作者:
P. Voelker
DOI:
10.1007/978-1-4684-6828-1_4
发表时间:
1994
期刊:
The Journal of Physical Chemistry
影响因子:
--
作者:
D. Winzor;P. Wills
通讯作者:
P. Wills
影响因子:
2.9
作者:
CHATELIER, RC;MINTON, AP
通讯作者:
MINTON, AP