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Linear solvent strength gradient

Figure 4.36 Example of an optimum linear-solvent-strength gradient. Peak Identification 1 benzyl alcohol 2=2-pbenylethanol 3 = o-cresol 4 nitrobenzene 5 diethyl o-phthalate 6 - benzophenone 7 = naphthalene 8 = biphenyl and 9 = anthracene. (Reproduced with permission fr< ref. 557. Copyright Elsevier Scientific P d)lishlng Co.)... Figure 4.36 Example of an optimum linear-solvent-strength gradient. Peak Identification 1 benzyl alcohol 2=2-pbenylethanol 3 = o-cresol 4 nitrobenzene 5 diethyl o-phthalate 6 - benzophenone 7 = naphthalene 8 = biphenyl and 9 = anthracene. (Reproduced with permission fr< ref. 557. Copyright Elsevier Scientific P d)lishlng Co.)...
SELECTION OF OPTIMAL LINEAR SOLVENT STRENGTH GRADIENTS IN LIQUID CHROHATOGRAPHy... [Pg.251]

For components which are eluted under ideal gradient conditions (i.e. those components that appear neither at the very beginning nor after the end of the actual gradient in linear solvent strength gradients, it can be shown that the median capacity factor kg is inversely proportional to the gradient steepness parameter, defined as [428]... [Pg.166]

Relationships for chromatographic parameters in a linear solvent strength gradient... [Pg.390]

Systematic optimization of linear solvent strength gradients begins with a full-range gradient from 5 to 100% strong solvent with conditions selected to give values of k ... [Pg.391]

Characteristic Parameters in Linear-Solvent-Strength Gradients... [Pg.155]

The simple dependence of retention on time in linear-solvent-strength gradient chromatography makes it possible to obtain exact expressions for retention time and peak broadening as well as resolution. This enables us to analyze these parameters and use this information for the optimization of the gradient conditions. In the following, the expressions for gradient retention time, peak width, and resolution are discussed. [Pg.156]

In contrast to the isocratic elution mode, typical gradient profiles have the advantage of providing far superior peak capacity per unit time. The peak capacity in a linear-solvent-strength gradient is given by (43)... [Pg.164]

A linear-solvent-strength gradient is generated when the composition of the mobile phase changes with time such that the logarithm of the hypothetical... [Pg.357]

H N is the theoretical plate count observed in isocratic elution, the peak standard deviation, a, (in time units) at the column outlet after a linear-solvent-strength gradient is given by... [Pg.358]

The combination of Equations (16.1) and (16.10) can be used to obtain the modifier composition profile needed to generate a linear-solvent-strength gradient in reversed-phase chromatography ... [Pg.359]

See other pages where Linear solvent strength gradient is mentioned: [Pg.243]    [Pg.249]    [Pg.251]    [Pg.251]    [Pg.719]    [Pg.761]    [Pg.762]    [Pg.762]    [Pg.763]    [Pg.70]    [Pg.762]    [Pg.762]    [Pg.121]    [Pg.192]    [Pg.330]    [Pg.331]    [Pg.268]    [Pg.378]    [Pg.388]    [Pg.388]    [Pg.389]    [Pg.552]    [Pg.157]    [Pg.173]    [Pg.115]    [Pg.1023]    [Pg.1023]    [Pg.690]    [Pg.690]    [Pg.512]   
See also in sourсe #XX -- [ Pg.166 , Pg.193 , Pg.194 , Pg.261 , Pg.279 ]



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