Influence of Zone Broadening on Particle Size Analysis by Sedimentation Field-flow Fractionation
Influence of Zone Broadening on Particle Size Analysis by Sedimentation Field-flow Fractionation
复制标题
区域展宽对沉降场流分级粒度分析的影响
DOI：
10.1039/9781847551627-00290
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
M. Tanigaki
中科院分区：
文献类型：
--
作者：
Yasushige Mori;K. Kimura;M. Tanigaki
场流分馏是一种较新的分析技术，适用于溶液中的微粒、聚合物和大分子的分离。近年来，沉降场-流动分级技术(SdFFF)致力于分离多种颗粒物，并将其应用于粒度测量。这是因为与其他亚微米粒度测定方法相比，SdFFF的优点是采用了按颗粒质量分类的分数收集，并且在较宽的粒度范围内具有较高的分辨率。但是，SdFFF存在着色谱技术的固有缺点，即载流子溶液和区域加宽的影响。在其他洗脱技术中，如尺寸排除层析或流体动力学层析，许多研究人员报道了载体溶液的影响，特别是洗脱液的离子强度，这是由颗粒和流体之间的胶体相互作用力解释的。
Field-flow fractionation (FFF) is a relatively new analytical technique applicable to the separation of fine particles, polymers and macromolecules in solutions. Recent efforts concerned with Sedimentation field-flow fractionation (SdFFF) is to separate wide variety of particulate species and to apply it to the particle size measurement. That is because SdFFF has advantages that it employs the fractional collection sorted by the particle mass, and has a high resolution over a wide range of particle size compared to other methods of sub-micrometer particle size determination.However, SdFFF has inherent disadvantages of the chromat-ographical technique, that is the effects of the carrier solution and the zone broadening. In other elution techniques such as size-exclusion chromatography or hydrodynamic chromatography, many researchers have reported the effects of the carrier solu-tion, especially the ionic strength of the eluent, which are explained by the colloidal interaction forces between particles and