Page 100 - Basic Gas Chromatography

87

undecanoate

2,6-Dimethylanaline
2,6-Dimethylphenol
decanoate
Naphthalene
Undecane
1-Decanol
Dodecane
1-Octanol
Decane
Methyl
Methy!
10.
3.
.
2.
7.
8.
9.
4.
5.
6.
1
-.
I.D.
1cm/min.
carrier
.25mm
injection
isothermal
film
H.,
Columns
speed
x
micron
22
40cm/sec.
meters
split
?

Atten:
110°C
DB-17
Chart
0.25
ul
OT
30
1
|
of
Types
until Conditions: Mixture. Test Standard of Chromatogram 6.1. Fig. DB-17 ID mm 0.25 x m 30 esti- 110°C. with 0.25 ym film at Chromatogra- M., From Miller, J. Inc. Courtesy of J & W Scientific, columns. phy: York, New Inc., Sons, & Wiley John Contrasts, and Concepts Reproduced 118. p. 1987, they Inc. Sons,
widely is it is, That liquid properly to of standard Marcel on silica, now
used not Today, capillary on tubes. of film are its resistance possible. separations a of symmetrical Dr. by coated phase tubular open fused of are columns
Columns 1959, in were but steadily popularity. in applications run are columns are that open Instead, thin a such earlier, columns tube the open, is meters 100 are efficient very chromatogram typical Notice sharp the compounds. patented and liquid of film wall-coated a tube made be can capillary 86
Capillary and Inlets columns introduced were which after grew they 80% over all of are columns simply with material. packing wall. discussed As (OT) columns.” Since and lengths, long to up lengths possible make 6.1 Figure a is 30-m silica fused OT. polar, and acidic, basic COLUMNS OT capillary column, invented of with tu
Capillary 1980, that Capillary not filled inside the tubular low, very These long mixtures. a on obtained for OF original consisted surface. WCOT, stainless silica. fused
6. about mated are coats “open is sample mixture TYPES The [1], inside or or of