Studies on external peak broadening in open-tubular liquid chromatography systems using the exponentially modified Gaussian model

1985 ◽  
Vol 20 (6) ◽  
pp. 357-363 ◽  
Author(s):  
W. M. A. Niessen ◽  
H. P. M. van Vliet ◽  
H. Poppe
1985 ◽  
Vol 57 (2) ◽  
pp. 559-561 ◽  
Author(s):  
Michel. Martin ◽  
Georges. Guiochon ◽  
Yvonne. Walbroehi ◽  
James W. Jorgenson

2011 ◽  
Vol 1218 (10) ◽  
pp. 1385-1392 ◽  
Author(s):  
J.J. Baeza-Baeza ◽  
J.R. Torres-Lapasió ◽  
M.C. García-Álvarez-Coque

1984 ◽  
Vol 67 (4) ◽  
pp. 728-731 ◽  
Author(s):  
John A Lansden

Abstract A liquid chromatographic procedure has been developed for analysis of cyclopiazonic acid in peanuts. The chromatographic system specifies a C18 or C8 column loaded with 4-dodecyldiethylenetriamine and an aqueous mobile phase containing 4-dodecyldiethylenetriamine, zinc acetate, ammonium acetate, 2-propanol, and acetonitrile. Cyclopiazonic acid was extracted from peanuts with methanol-chloroform (20 + 80), partitioned into aqueous sodium bicarbonate, acidified, and back-extracted into dichloromethane. The limit of detection (280 nm UV) was approximately 4 ng and detector response was linear to at least 1 μg pure cyclopiazonic acid. The recovery of cyclopiazonic acid from peanuts spiked at 68.9, 210, and 955 μ/kg was 85.9% (12.86% CV), 72.9% (6.43% CV), and 81.4% (0.40% CV), respectively. Calculation of the chromatographic peak parameters based on the exponentially modified Gaussian model indicated that the C18 column produced less peak skewing than did the C8 column.


1990 ◽  
Vol 516 (2) ◽  
pp. 301-312 ◽  
Author(s):  
S. Eguchi ◽  
J.G. Kloosterboer ◽  
C.P.G. Zegers ◽  
P.J. Schoenmakers ◽  
P.P.H. Tock ◽  
...  

1997 ◽  
Vol 16 (6) ◽  
pp. 332-342 ◽  
Author(s):  
Remco Swart ◽  
Johan C Kraak ◽  
Hans Poppe

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