Introduction to Modern Liquid Chromatography, Third Edition part 69 pot
Introduction to Modern Liquid Chromatography, Third Edition part 69 pot
... decreases.
13.8.2.3 Particle Diameter
As in interactive modes of chromatography, a reduction in particle diameter in SEC
improves column efficiency. Column packings with particle diameters of 10 to 12
μm ... filtration is also able to determine receptor-ligand (e.g., protein–drug)
interactions using zonal chromatography, Hummel–Dreyer methodology, or frontal
analysis [144]. In zonal chr...
Introduction to Modern Liquid Chromatography, Third Edition part 2 potx
... 158
4.3 Introduction to Individual Detectors, 160
4.4 UV-Visible Detectors, 160
4.4.1 Fixed-Wavelength Detectors, 163
4.4.2 Variable-Wavelength Detectors, 164
4.4.3 Diode-Array Detectors, 165
4.4.4 ... 113
3.6 Autosamplers, 113
3.6.1 Six-Port Injection Valves, 114
3.6.1.1 Filled-Loop Injection, 114
3.6.1.2 Partial-Loop Injection, 115
3.6.2 Autosampler Designs, 116
3.6.2.1 Pull -to- Fill A...
Introduction to Modern Liquid Chromatography, Third Edition part 12 potx
... reasons:
• to avoid an undesirable change in separation due to a sample size that is too
large
• to increase detection sensitivity for trace analysis, by using the largest
possible sample size
• to maximize ... 1 to 4, the peak begins
to widen and then develops a flat top. For Equation (2.27) and the examples of
Figure 2.22, we assume the delivery of an undistorted (i.e., cylindric...
Introduction to Modern Liquid Chromatography, Third Edition part 15 pot
... the total of the autosampler -to- column
plus column -to- detector connections. Sometimes it is advantageous to use a short
piece of 0.007-in i.d. tubing between the autosampler and column, so as to ... with pressures up to
6000 psi between the pump and detector, so the tubing must be able to withstand
such pressures. Also tubing used to transport the sample from the autosampler to...
Introduction to Modern Liquid Chromatography, Third Edition part 22 potx
... DETECTORS 169
lamp
filter or
monochromator
photocell
sample in
sample out
Figure 4.14 Schematic of a fluorescence detector. Dashed lines show optical path.
expensive fluorometers use filters to select ... directed to a photodetector, where it is monitored and
converted to an electronic signal for data processing. Because fluorescence is emitted
in all directions, it is common to monitor...
Introduction to Modern Liquid Chromatography, Third Edition part 29 potx
... pack-
ing particles. To prevent particle aggregation, the interaction of the particle with the
slurry liquid should be stronger than interactions between particles. For example,
C
8
-orC
18
-modified particles ... as
illustrated by the cartoon of Figure 5.25a, the liquid may be acceptable. However, if
the particles tend to aggregate as in Figure 5.25b, the liquid is likely a poor cho...
Introduction to Modern Liquid Chromatography, Third Edition part 30 pot
... REVERSED-PHASE CHROMATOGRAPHY
(NARP), 295
6.6 SPECIAL PROBLEMS, 297
6.6.1 Poor Retention of Very Polar Samples, 297
6.6.2 Peak Tailing, 298
Introduction to Modern Liquid Chromatography, Third Edition, by ... 1986-07-01.
76. J. J. Kirkland and J. J. DeStefano, J. Chromatogr. A, 1126 (2006) 50.
77. L. R. Snyder and J. J. Kirkland, Introduction to Modern Liquid Chromatograp...
Introduction to Modern Liquid Chromatography, Third Edition part 42 pot
... so
that on average a change in %B by a factor of two (e.g., a change in mobile phase
from 100% B to 50% B) will change values of k by a factor of 2 to 4.
Similar plots of log k against log %B ... solute and mobile phase. The reader may
prefer to skip to Section 8.2.2 (which provides a practical summary of the discussion
below) and return to this section as appropriate.
Equation (8.2...
Introduction to Modern Liquid Chromatography, Third Edition part 53 pot
... column.
Because of the increase in pressure due to the smaller particles, it is necessary to
reduce the flow rate from 2.0 mL/min in Figure 10.3b to 1.0 mL/min in the separa-
tion of Figure 10.3c. ... are usually easy to separate, the potential value of computer simulation may
be at best marginal. Another barrier to the use of computer simulation is the belief
that the chromatographe...
Introduction to Modern Liquid Chromatography, Third Edition part 55 pot
... hand.
Second, the data system and associated software must be able to convert the HPLC
Introduction to Modern Liquid Chromatography, Third Edition, by Lloyd R. Snyder,
Joseph J. Kirkland, and John W. ... quantification. One way to minimize
this problem is to stop integration when the peak is sure to have left the detector.
This can be accomplished by visually determining w...
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