Figure 3
Separations of Grob mixture on the C4A-PEG-2PTSC, C4A-C10, HP-35 and PEG-20M columns. Peaks: (1) n-decane, (2) n-undecane, (3) nonanal, (4) 1-octanol, (5) 2,3-butanediol, (6) methyl decanoate, (7) methyl undecanoate, (8) methyl dodecanoate, (9) 2,6-dimethylaniline, (10) dicyclohexylamine, (11) 2,6-dimethylphenol, (12) 2-ethylhexanoic acid. Temperature program: 40 oC (keep 1 min) up to 160 oC (keep 5 min) at 10 oC min-1 and flow rate: 0.6 mL min-1
Figure 4
Separations of the mixture of 23 analytes of diverse types on the C4A-PEG-2PTSC, HP-35 and PEG-20M columns. Peaks: (1) n-decane, (2) ethylbenzene, (3) 1-bromohexane, (4) 2-heptanone, (5) n-propylbenzene, (6) 1,3,5-trimethylbenzene, (7) 1-bromoheptane, (8) 2-octanone, (9) 1,2,3-trimethylbenzene, (10) 1-hexanol, (11) n-tridecane, (12) 1,4-dichlorobenzene, (13) 1-heptanol, (14) methyl nonanoate, (15) 1-octanol, (16) n-pentadecane, (17) 1-nonanol, (18) 1,2,3-trichlorobenzene, (19) o-toluidine, (20) 2,6-dimethylaniline, (21) 2,5-dimethylaniline, (22) 4-chloronitrobenzene, (23) 1-dodecanol. Temperature program: 40 oC (keep 1 min) up to 160 oC (keep 5 min) at 10 oC min-1 and flow rate: 0.6 mL min-1
Figure 5
Separations of isomer mixtures of (a) trimethylbenzene, (b) methylnaphthalene, (c) dimethylnaphthalene, (d) dichlorobenzene, (e) dibromobenzene, (f) trichlorobenzene, (g) nitrochlorobenzene and (h) nitrobromobenzene on the C4A-PEG-2PTSC column. Temperature program: 40 oC (keep 1 min) up to 160 oC (keep 5 min) at 10 oC min-1 and flow rate: 0.6 mL min-1
Figure 6
Separations of isomer mixtures of (a) nitrobenzaldehyde, (b) cyanobenzaldehyde, (c) dichlorobenzaldehyde, (d) dimethylphenol and (e) butanol on the C4A-PEG-2PTSC column. Temperature program: 40 oC (keep 1 min) up to 160 oC (keep 5 min) at 10 oC min-1 and flow rate: 0.6 mL min-1
Figure 8
Separations of cis-/transisomers of (a) 2-butenenitrile, (b) 2,5-dimethyltetrahydrofuran, (c) 2,5-dihydro-2,5-dimethoxyfuran, (d) decahydronaphthalene, (e) acetaldoxime, (f) 1,2,3-trichloropropene, (g) 2-methyl-4-propyl-1,3-oxathiane, (h) nerolidol and (i) nerol/geraniol on the C4A-PEG-2PTSC column. Temperature program: 40 oC (keep 1 min) up to 160 oC (keep 5 min) at 10 oC min-1 and flow rate: 0.6 mL min-1
Figure 9
Applications of the C4A-PEG-2PTSC and HP-35 columns for the determination of minor isomer impurities in the real samples of 1,2,4-trichlorobenzene, 2,4-dimethylaniline, m-xylene and o-xylene. Temperature program: 40 oC (keep 1 min) up to 160 oC (keep 5 min) at 10 oC min-1 and flow rate: 0.6 mL min-1