scholarly journals Theoretical study of the efficiency of liquid chromatography columns with particle size gradient

2021 ◽  
pp. 462331
Author(s):  
Szabolcs Horváth ◽  
Fabrice Gritti ◽  
Krisztián Horváth
Keyword(s):  
Particle Size ◽  
Liquid Chromatography ◽  
Theoretical Study ◽  
Chromatography Columns ◽  
Size Gradient

Effects of column length, particle size, gradient length and flow rate on peak capacity of nano-scale liquid chromatography for peptide separations

2007 ◽  
Vol 1147 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Hongji Liu ◽  
Jeffrey W. Finch ◽  
Michael J. Lavallee ◽  
Robert A. Collamati ◽  
Christopher C. Benevides ◽  
...  
Keyword(s):  
Particle Size ◽  
Liquid Chromatography ◽  
Flow Rate ◽  
Peak Capacity ◽  
Column Length ◽  
Nano Scale ◽  
Peptide Separations ◽  
Size Gradient

Effects of Particle Size and Method of Milling on Determination of Morphine in Papaver somniferum L. Straw

1982 ◽  
Vol 65 (3) ◽  
pp. 651-654
Author(s):  
Beatriz Ferreira Engelke ◽  
Phillip G Vincent
Keyword(s):  
Particle Size ◽  
High Pressure ◽  
Liquid Chromatography ◽  
High Pressure Liquid Chromatography ◽  
Reproducibility Of Results ◽  
Ball Mill ◽  
Papaver Somniferum ◽  
Particle Sizes ◽  
Morphine Content

Abstract Different particle sizes of blade- and ball-milled poppy straw were separated and analyzed for morphine by high pressure liquid chromatography. Morphine content varied up to 70% among the different size particles. This may account for discrepancies observed in percentages of morphine found among random aliquots. Homogenizing a carefully quartered sample of blade-milled straw by further pulverization in a percussion ball mill 2 min and taking a quartered aliquot for morphine analysis improved the reproducibility of results.

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