Chromatography and Height Equivalent to a Theoretical Plate (HETP)
2023年1月28日 · Consequently, HETP should vary depending on the chromatographic peak considered and not constant for a given column. Concerning equation 2), instead, the parameters present are column-fixed, therefore also HETP should be a column-fixed constant. So, is HETP constant, given a column, or does It vary with the peak being considered, as N?
physical chemistry - Which characteristics of the compound affect …
"Plate Models in Chromatography: Analysis and Implication for Scale Up", Chromatograpy,Springer-Verlag [ 3 (abstract)]"Neural Network Modeling of Structured Packing Height Equivalent to a Theoretical Plate", Ind. Eng. Chem. Res., 2000, 39 (5), pp 1520–1525
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2020年4月16日 · Chromatography and Height Equivalent to a Theoretical Plate (HETP) HETP can be expressed in two ways: HETP = L/N HETP = A + B/u + Cu where: L: lenght of the coloumn N: Number of theoretical plates A: Eddy-diffusion parameter, related to channeling through a …
chromatography - Retention time and dead time - Chemistry …
2019年5月24日 · Chromatography and Height Equivalent to a Theoretical Plate (HETP) 4.
Concept of Adjusted Retention Time in Chromatography
2019年5月23日 · Remember that a chromatography column is made up of a stationary phase plus the mobile phase. The sample continuously partitions between the mobile phase and the stationary phase. The sample continuously partitions between the mobile phase and the stationary phase.
In HPLC, how does column diameter affect the retention time?
2019年5月27日 · The key idea is that when you change column diameter, you keep the superficial linear velocity the same. For example if I have an analyte which elutes on a 10 cm x 4.6 mm i.d column at 7 minutes at 1 mL/min.
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Newest 'chromatography' Questions - Chemistry Stack Exchange
Chromatography and Height Equivalent to a Theoretical Plate (HETP) HETP can be expressed in two ways: HETP = L/N HETP = A + B/u + Cu where: L: lenght of the coloumn N: Number of theoretical plates A: Eddy-diffusion parameter, related to channeling through a non-...
Normal phase vs reverse phase HPLC - Chemistry Stack Exchange
2017年9月24日 · Normal phase HPLC systems are similar to the flash-column chromatography that you might be familiar with. A silica stationary phase is eluted with a non-polar solvent such as hexane, or a fairly non-polar solvent mixture such as 2-propanol in hexanes. In normal phase chromatography, only organic solvents are used.
Recently Active 'chromatography' Questions - Chemistry Stack …
Chromatography and Height Equivalent to a Theoretical Plate (HETP) HETP can be expressed in two ways: HETP = L/N HETP = A + B/u + Cu where: L: lenght of the coloumn N: Number of theoretical plates A: Eddy-diffusion parameter, related to channeling through a non-...