Nonequilibrium and Polydispersity Peak Broadening in Thermal Field-Flow Fractionation
Nonequilibrium and Polydispersity Peak Broadening in Thermal Field-Flow Fractionation
复制标题
热场流分级中的非平衡和多分散性峰展宽
DOI：
10.1080/01483917908060055
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发表时间：
1979
影响因子：
1.3
通讯作者：
J. Giddings
中科院分区：
文献类型：
--
作者：
Michel Martin;M. N. Myers;J. Giddings
摘要 新的理论程序和扩展的数据库相结合，改进了场流分级 (FFF) 中非平衡板高度和多分散性贡献的计算。五个热 FFF 柱系统具有四倍的柱宽和长度范围，使用四种溶质进行操作，产生十一个不同的通道-溶质系统。对松弛效应数据进行校正后，实验板高度测量值与理论值的比较表明非平衡参数 X 具有良好的整体一致性。多分散性的计算值与供应商的值相当吻合。数据可靠性与色谱柱尺寸和实验参数的关系进行了讨论。
Abstract New theoretical procedures and an expanded data base have been combined to yield improved calculations for nonequilibrium plate height and polydispersity contributions in field-flow fractionation (FFF). Five thermal FFF column systems having a fourfold range in column width and length were operated with four solutes to yield eleven distinct channel-solute systems. After data were corrected for relaxation effects, comparison of experimental plate height measurements with theory showed good overall agreement for nonequilibrium parameter X. Calculated values of polydispersity agreed reasonably well with supplier's values. Data reliability has been discussed in relationship to column dimensions and experimental parameters.