Introduction to Modern Liquid Chromatography, Third Edition part 8 doc
Introduction to Modern Liquid Chromatography, Third Edition part 8 doc
... stationary phase
Polar(hydrogen bonding)
interaction with the polar
mobile phase
C
18
C
18
C
18
C
18
C
18
C
18
C
18
CH
3
−CH
2
−CH
2
−CH
2
−CH
2
−CH
3
HO−
CH
2
−CH
2
−CH
2
−OH
H
O H
0246
Time (min)
−OCH
3
(anisole)
benzene
−NH−CHO ... around the nucleus of atom S will
be unsymmetrical at any instant of time (as in Fig 2.8a), and this will cause the
electrons in adjacent atom X...
Introduction to Modern Liquid Chromatography, Third Edition part 27 doc
... 4.1 51
Dimethyl-3-cyanopropyl 3 .8 48
Dimethyl-n-butyl 3 .8 48
Dimethyl-n-octyl 3.5 44
Dimethyl-n-octadecyl 3.2 40
Sterically protected columns
Triisopropyl 2.2 28
Diisopropyl-3-cyanopropyl 2.1 ... C
18
stationary phase
and water as mobile phase, meaning that pressure is required to force water into
the pores. If the pressure P is insufficient to force a highly aqueous mobile phase...
Introduction to Modern Liquid Chromatography, Third Edition part 28 docx
... −0. 08 −0. 08 0.02 0.04 0.66 1.2
C
3
(type-B) 0.60 −0.12 −0. 08 0.04 −0. 08 0 .81 2 .8
C
8
(type-B) 0 .84 0.00 −0.12 0.02 −0.03 0.25 5.4
C
18
(type-B) 0.99 0.01 −0.01 0.00 0.00 0.24 8. 8
C
18
(type-B, ... 3.1
Luna C 18( 2)
k
1.00 0.02 −0.12 −0.01 −0.27 −0.17 9.6
Gemini C 18 110A
k
0.97 −0.01 0.03 0.01 −0.09 0.19 8. 0
Discovery C 18
l
0. 98 0.03 −0.13 0.00 0. 18 0.15 4 .8
Hyp...
Introduction to Modern Liquid Chromatography, Third Edition part 37 docx
... (min)
1
2
3
11
4
5
1
2
11
4
5
11
2
1
3
4
5
6
+
7
11
8
9
10
6
7
11
8
9
10
6
7
11
8
9
10
Strong bases Acids
Inertsil ODS-3
C = −0.47
Inertsil ODS-3
Symmetry C 18
C = −0.30
Symmetry C1
8
Discovery C 18
C = 0. 18
Discovery C 18
3
(a)
Figure ... 4.6-mm C
18
column (5-μm particles); mobile phase, 13% acetonitrile-buffer
(buffer is citrate plus phosphate); 2.0 mL/min; 35
◦
C. Peaks...
Introduction to Modern Liquid Chromatography, Third Edition part 71 docx
... J. Chromatogr., 3 (1960) 330.
66. Y. Kato, T. Kitamura, and T. Hashimoto, J. Chromatogr., 266 (1 983 ) 49.
67. Y. Kato, T. Kitamura, and T. Hashimoto, J. Chromatogr., 292 (1 984 ) 4 18.
68. R. E. ... McClintock, J. Chromatogr., 2 68 (1 983 ) 112.
154. J. Rivier, R. McClintock, R. Galyean, and H. Anderson. J. Chromatogr., 288 (1 983 )
303.
155. E. I. Grimm and E. E. Logsdon, US Patent 4,612...
Introduction to Modern Liquid Chromatography, Third Edition part 76 doc
... donor-acceptor phases
have also proved to be valuable tools for SFC enantiomer separation [150, 151].
14.6 .8 Chiral Ion-Exchangers
Chiral ion-exchangers utilize ionizable selectors to exploit ... coworkers led in 1 981 to the
first commercialized CSP with a DNB-phenylglycine derivative immobilized ionicly
onto silica. Later this synthetic chiral selector was grafted onto silica via a c...
Introduction to Modern Liquid Chromatography, Third Edition part 77 docx
... Pharm.
Biomed. Anal., 46 (20 08) 88 2.
66. P. Franco and T. Zhang, J. Chromatogr. B, 87 5 (20 08) 48.
67. A. Ghanem and H. Aboul-Enein, J. Liq. Chromatogr., 28 (2005) 286 3.
68. A. Ghanem, H. Hoenen, ... 754
Introduction to Modern Liquid Chromatography, Third Edition, by Lloyd R. Snyder,
Joseph J. Kirkland, and John W. Dolan
Copyright © 2010 John Wiley & Sons, Inc.
725
R...
Introduction to Modern Liquid Chromatography, Third Edition part 81 doc
... SAMPLES, 791
16 .8. 1 Traditional Extraction Methods, 792
16 .8. 2 Modern Methods for Extracting Solids, 793
16.9 COLUMN-SWITCHING, 796
Introduction to Modern Liquid Chromatography, Third Edition, by ... removal but also to remove particulates.
16.4 SAMPLE PREPARATION FOR LIQUID SAMPLES
Table 16.2 provides an introduction to sample preparation methods for liquid sam-...
Introduction to Modern Liquid Chromatography, Third Edition part 92 doc
... leakage Damaged rotor seal Clean, replace rotor seal;
may require stator
replacement.
External leaks not at
fittings
Worn rotor seal Clean, replace rotor seal
Insufficient
rotor -to- seal
pressure
Adjust
Seal-pack ... inconsistent
areas
Problem from
injector onward
Check autosampler, pump,
detector, and integration
Table 17 .8
Baseline-Drift Problems (Section 17.4.5.1): Symptoms and Sources
Sy...
Introduction to Modern Liquid Chromatography, Third Edition part 95 pdf
... 33–34, 88 0 88 1
preferred, 254, 287 – 288
properties, 87 7 88 3
RI values, 87 9 88 0
safety, 88 3
selectivity triangle, 33–34
selectivity values, 88 0 88 1
strength, 28 29, 257–259
ion-pair chromatography, ... peaks, 83 9, 84 5
leaks, 82 2
autosampler, 82 5 82 8
column, 82 8
detector, 82 8 83 0
high-pressure, 82 5
pre-pump, 82 2 82 1
pump,
82 3 82 4
low-frequency noise, 84...
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