Different elution modes and field programming in gravitational field-flow fractionation IV. Field programming achieved with channels of non-constant cross-sections
1.
SYSNO ASEP
0162369
Druh ASEP
J - Článek v odborném periodiku
Zařazení RIV
J - Článek v odborném periodiku
Poddruh J
Ostatní články
Název
Different elution modes and field programming in gravitational field-flow fractionation IV. Field programming achieved with channels of non-constant cross-sections
Tvůrce(i)
Plocková, Jana (UIACH-O) Matulík, František (UIACH-O) Chmelík, Josef (UIACH-O)
Zdroj.dok.
Journal of Chromatography A. - : Elsevier
- ISSN 0021-9673
Roč. 955, č. 1 (2002), s. 95-103
Poč.str.
9 s.
Jazyk dok.
eng - angličtina
Země vyd.
NL - Nizozemsko
Klíč. slova
gravitational field-flow fractionation ; field programming ; hydrodynamic lift forces
Vědní obor RIV
CB - Analytická chemie, separace
CEP
IAA4031805 GA AV ČR - Akademie věd
CEZ
AV0Z4031919 - UIACH-O
Anotace
Although the Earth's gravitational field is constant and relatively weak, there are different ways to implement force field programming in GFFF. Because hydrodynamic lift forces participate in the separation process in focusing (hyperlayer) elution mode, they can control the resulting force field acting on particles via changes of flow-velocity. In this work, these changes are accomplished with channels of non-constant cross-sections. Three trapezoidal channels of decreasing breadth and two channels of decreasing height (along the longitudinal axis) are tested as tools for optimization of the separation of a model silica gel particle mixture.
