Standardless method for quantitative particle-size distribution studies bygravitational field-flow fractionation. Application to silica particles

Citation
P. Reschiglian et al., Standardless method for quantitative particle-size distribution studies bygravitational field-flow fractionation. Application to silica particles, CHROMATOGR, 51(1-2), 2000, pp. 87-94
Citations number
20
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
CHROMATOGRAPHIA
ISSN journal
00095893 → ACNP
Volume
51
Issue
1-2
Year of publication
2000
Pages
87 - 94
Database
ISI
SICI code
0009-5893(200001)51:1-2<87:SMFQPD>2.0.ZU;2-Z
Abstract
Gravitational field-flow fractionation is a separative analytical technique which has already proved suitable for quantitative particle-size distribut ion analysis. One of the most attractive aspects of the technique is that i t can allow for direct conversion of fractograms into size distributions of the samples, although retention exhibits substantial dependence on flow ra te, compared to other field-flow fractionation methods. It is shown here that conversion of fractograms into quantitative, size-dis tribution profiles of micron-sized silica particles is possible through gra vitational field-flow fractionation in standardless mode. Standardless mean s that the conversion of fractograms is performed by single-run analysis be cause all the parameters necessary for the calculations can be obtained, fr om sample specifications and previous instrumental calibration, by means of semiempirical models.