FAMEs in biodiesel oils on a Stabilwax® column.
59
GC COLUMNS |
GENERAL PURPOSE COLUMNS
Stabi lwax®
similar
phases
DB-WAX, DB-WAXetr, HP-Wax, HP-Innowax,
Supelcowax 10, CP-Wax 52 CB
H
H
C C O
H
H
Stabilwax
®
Structure
also
available
Metal MXT® Columns
Rugged, flexible, Silcosteel® treated stainless
steel tubing; inertness comparable to fused
silica tubing. See
page 118
for our MXT®-WAX
columns.
manufacturing
procedure
Better column-to-column reproducibility
Stabilwax® Columns
(fused silica)
(polar phase; Crossbond® Carbowax® polyethylene glycol)
• Most stable polyethylene glycol (PEG) column available.
• Rugged enough to withstand repeated water injections.
• Lowest bleed PEG column on the market; long column lifetimes are assured
• Temperature range: 40 °C to 260 °C.
• Equivalent to USP G14, G15, G16, G20, and G39 phases.
Restek’s polar-deactivated surface tightly binds the Carbowax® polymer and increases
thermal stability, relative to competitive columns. Because of the increased stability pro-
duced by the bonding process, Stabilwax® columns exhibit long column lifetimes, even
when programming repeatedly up to 260 °C. The bonding mechanism of the column
also produces polar compound retention times that do not shift as is often observed on
other wax-type columns. In addition, this bonding mechanism produces a column that
can be rejuvenated by solvent washing. Stabilwax® columns are used for a wide range of
compounds and matrices including: FAMEs, flavor compounds, essential oils, solvents,
aromatics including xylene isomers, acrolein/acrylonitrile (EPA 603), and oxygenated
compounds. Also used for purity testing of chemicals and analyzing impurities in water
matrices and alcoholic beverages.
Column:
Stabilwax
®
, 30m, 0.32mm ID, 0.25µm (cat.# 10624)
Sample:
various sources of biodiesel (B100), prepared
according to European Method EN 14103
Inj.:
1.0µL split (split ratio 100:1), Cyclosplitter
®
inlet liner
(cat.# 20706)
Inj. temp.:
250°C
Carrier gas:
hydrogen, constant flow, 3mL/min.
Linear velocity: 60cm/sec.
Oven temp.:
210°C (hold 5 min.) to 230°C @ 20°C/min.
(hold 5 min.)
Det.:
FID @ 250°C
Yellow Grease FAMEs on Stabilwax®
Tallow FAMEs on Stabilwax®
1. myristic acid C14:0
2. palmitic acid C16:0
3. palmitoleic acid C16:1
IS methyl heptadecanoate
4. stearic acid
C18:0
5. oleic acid
C18:1
6. linoleic acid
C18:2
7. linolenic acid C18:3
8. arachidic acid C20:0
9. gadoleic acid C20:1
10. lignoceric acid C24:0
11. nervonic acid C24:1
GC_PC00916
1. myristic acid C14:0
2. palmitic acid C16:0
3. palmitoleic acid C16:1
IS methyl heptadecanoate
4. stearic acid
C18:0
5. oleic acid
C18:1
6. linoleic acid
C18:2
7. linolenic acid C18:3
8. arachidic acid C20:0
9. gadoleic acid C20:1
10. behenic acid C22:0
11. erucic acid
C22:1
12. lignoceric acid C24:0
GC_PC00918
See page 646 for Soy FAMEs and
Rapeseed FAMEs analysis.
NEW!
ID
df
temp. limits
15-Meter
30-Meter
60-Meter
0.25mm 0.10µm 40 to 250/260°C 10605
10608
10611
0.25µm 40 to 250/260°C 10620
10623
10626
0.50µm 40 to 250/260°C 10635
10638
10641
0.32mm 0.25µm 40 to 250/260°C 10621
10624
10627
0.50µm 40 to 250/260°C 10636
10639
10642
1.00µm 40 to 240/260°C 10651
10654
10657
0.53mm 0.25µm 40 to 250/260°C 10622
10625
10628
0.50µm 40 to 250/260°C 10637
10640
10643
1.00µm 40 to 240/260°C 10652
10655
10658
1.50µm 40 to 230/240°C 10666
10669
10672
2.00µm 40 to 220/230°C 10667
10670
ID
df
temp. limits
10-Meter
20-Meter
0.10mm 0.10µm 40 to 250/260°C 42601
0.18mm 0.18µm 40 to 250/260°C
40602
Six columns for the price of five!
Call 800-356-1688, ext. 4, or your Restek
representative for details!
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
