644
GC CHROMATOGRAMS |
PETROLEUM & PETROCHEMICAL
Fuels
• built-in retention gap
• eliminates connector
Retention Gap Liquid Phase
Total Glycerin in Biodiesel
MXT®-Biodiesel TG
0
10
20
Time (min)
Column:
MXT
®
-Biodiesel TG, 14m, 0.53mm ID, 0.16µm (cat.# 70289) with
a 2m x 0.53mm Integra-Gap
®
retention gap
(16m total length)
Sample:
biodiesel (B100), derivatized
Inj.:
cool on-column injection
1µL in heptane
Inj. temp.:
oven track
Carrier gas:
hydrogen, constant flow
Flow rate:
4mL/min.
Oven temp.:
50°C (hold 1 min.) to 180°C @ 15°C/min. to 230°C @ 7°C/min. to
430°C @ 30°C/min. (hold 5 min.)
Det.:
FID @ 430°C
GC_PC00969
glycerin
monoglycerides
monoglycerides
diglycerides
triglycerides
butanetriol (IS)
tricaprin (IS)
The best solution
for analyzing total
glycerin in biodiesel!
Biodiesel Oil (B100)
Rtx®-Biodiesel TG
B. Rtx®-Biodiesel TG
with Universal Press-Tight®Connector and
2 meters of 0.53mm ID Hydroguard® tubing
A. Rtx®-Biodiesel TG
with Alumaseal® connector and
2 meters of 0.53mm ID Hydroguard® tubing
GC_PC00905
Columns:
A. Rtx
®
-Biodiesel TG, 10m, 0.32mm ID, 0.10µm connected to 2m x 0.53mm
Hydroguard
®
tubing using Alumaseal
®
connector
B. Rtx
®
-Biodiesel TG, 10m, 0.32mm ID, 0.10µm connected to 2m x 0.53mm
Hydroguard
®
tubing using Universal Press-Tight
®
connector
Sample:
biodiesel (B100) with butanetriol at 12.5ppm (12.5ng on-column)
Inj.:
1µL, cool on-column injection
Inj. temp.:
oven track mode
Carrier gas:
hydrogen, constant flow 4cc/min.
Linear velocity: 79cm/sec.
Oven temp.:
50°C (hold 1min.) to 180°C @ 15°C/min. to 230°C @ 7°C/min. to 380°C
@ 30°C/min. (hold 5 min.)
Det.:
FID @ 380°C
Butanetriol
Asymmetry = 1.14
Butanetriol
Asymmetry = 1.00
Integra-Gap® technology.
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
