668
GC CHROMATOGRAMS |
CLINICAL, FORENSIC & TOXICOLOGY
Glycols, GHB/GBL
Glycols
Rtx®-BAC1 & Rtx®-BAC2
1. ethylene glycol
2. propylene glycol
Rtx®-BAC1
Rtx®-BAC2
Columns:
Rtx
®
-BAC1, 30m, 0.32mm ID, 1.8µm
(cat.# 18003)
Rtx
®
-BAC2, 30m, 0.32mm ID, 1.2µm
(cat.# 18002)
Inj.:
0.5µL split injection
Conc.:
1%
Solvent:
methanol
Oven temp.:
100°C to 240°C @ 5°C/min. (hold 5 min.)
Inj. temp.:
240°C
Inj. mode:
100:1 split
Inlet liner:
4mm single gooseneck (cat.# 20798)
Septa purge:
5.0cc/min.
Carrier gas:
helium, constant pressure
Pressure:
12psi
Linear velocity:
37cm/sec.
Column flow rate: 2.1mL/min.
Det.:
FID @ 240°C
Make-up gas flow: 40cc/min.
GC_EV00474
γ
-butyrolactone and
γ
-butyrolactone-d6
Rxi®-5ms
GC_PH00869
Column:
Rxi
®
-5ms, 30m, 0.25mm ID, 0.25µm (cat.# 13423)
Sample:
50µg/mL
γ
-butyrolactone (GBL) and 25µg/mL
γ
-butyrolactone-d6 (GBL-d6) in methanol
Inj.:
1µL split (1:10), 4mm Siltek
®
treated single
gooseneck inlet liner (cat.# 20798-214.1)
Inj. temp.:
250°C
Carrier gas:
helium, constant flow
Flow rate:
1mL/min.
Oven temp.:
40°C (3 min.) to 300°C @ 25°C/min. (hold 5 min.)
Det:
MS
Transfer line
temp.:
280°C
Scan range:
35-200amu
Ionization:
EI
Mode:
scan
1. GBL-d6 (m/z 92)
2. GBL (m/z 86)
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Mar 2011
