ISSN:
1040-7685
Keywords:
field-flow fractionation
;
flow field-flow fractionation
;
flowrate programming
;
separation of colloids
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A flow field-flow fractionation (FIFFF) system capable of accurate and reproducible flowrate programming has been assembled and tested. This modified system consists of three computer-controllable pumps, two that regulate the incoming and outgoing cross flowrates and one that controls the channel flowrate. The system also has a computer-linked balance that allows for instantaneous measurement of the cross flowrate. Programming of the field strength (or cross flowrate) was used to decrease the analysis time and improve detectability of late eluting peaks in FIFFF analysis. A six component latex mixture, with microspheres ranging from 20 to 426 nm in size, was used as a test material. With programming, this mixture can be separated in 8 min. © 1995 John Wiley & Sons, Inc.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mcs.1220070412
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