Measuring and testing – Particle size
Patent
1998-02-27
2000-08-29
Williams, Hezron
Measuring and testing
Particle size
7386433, 7386321, 210511, 210767, 209210, 209422, 209716, 209156, G01N 118, G01N 1504, B03B 566, B03C 3017, B03D 300
Patent
active
061091197
ABSTRACT:
Sample focusing method and device for field-flow fractionation techniques that lead to improved detection, improved separation resolution, and a compressed sample plug while permitting a more straightforward quantitation of peaks and reliable large volume injections. The method and technique can be implemented in separations that are performed by a variety of field-flow fractionation techniques, including thermal FFF, electrical FFF, sedimentation FFF, gravitational FFF, dielectric FFF, photophoretic FFF, flow FFF, asymmetric flow FFF, and symmetric flow FFF. The sample focusing device can be integrally built into a separation channel or it can be manufactured as an attachable independent piece.
REFERENCES:
patent: 3449938 (1969-06-01), Giddings
patent: 4147621 (1979-04-01), Giddings
patent: 4284498 (1981-08-01), Grant et al.
patent: 4506558 (1985-03-01), Bakalyar
patent: 4737268 (1988-04-01), Giddings
patent: 4894146 (1990-01-01), Giddings
patent: 5039426 (1991-08-01), Giddings
patent: 5141651 (1992-08-01), Giddings
patent: 5156039 (1992-10-01), Giddings
patent: 5193688 (1993-03-01), Giddings
patent: 5716852 (1998-02-01), Yager et al.
patent: 5932100 (1996-06-01), Yager et al.
patent: 5948684 (1997-07-01), Weigl et al.
J.C. Giddings, Field-Flow Fractionation, Chem. & Eng. News., vol. 66 (1988) pp. 34-45.
S.K. Ratanathanawongs et al., Separation and Characterization of 0.01-50-.mu.m Particles . . . , ACS Symp. Ser. 472, 1991. Ch. 15, 229-46.
R. Beckett et al., Measurement of Mass and Thickness of Adsorbed Films . . . , Langmuir, vol. 7 (1991) pp. 2040-2047.
Min-Kuang Liu et al., Hydrodynamic Relaxation in Flow Field-Flow Fractionation Using . . . , Anal. Chem., vol. 63 (1991), pp. 2115-2122.
H.L. Lee et al., AIChE J., vol. 20 (1974) pp. 776-784.
K.G. Wahlund et al., Analytical Chem., vol. 59 (1987) pp. 1332-1339.
H. Lee et al., Particle Size Analysis of Dilute Environmental Colloids . . . , Analytical Chem., vol. 70 (1998) pp. 2495-2503.
C. Tank et al., Characterization of Water Soluble Polymers and Aqueous Colloids . . . , Macromol. Chem. Phys., vol. 197 (1996) 2943-59.
FFFractionation Brochure--Model F-1000.
FFFractionation Brochure--Model S-101.
FFFractionation Brochure--Model T-100.
FFFractionation Leaflets--Basics of the FFF separation, 3 sheets.
Hansen Marcia E.
Jiang Yong
Kummerow Andreas M.
Miller Michael E.
FFFractionation, LLC
Soliz Chad
Williams Hezron
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