Clin ical/Forensics
Figure 3
An Rxi™-Sms column prov ides the symmetric peaks and
resolution needed for reliable confi rmation of GHB.
Column:
Rxi™-Sms 30m, 0.25mm !D, 0.251-/m(cat.# 13423)
Sample:
50l-/g/ml
gamma-butyrolactone(GBl) and251-/g/ ml
gamma-butyrolactone-d6 (GBl-d6)inmethanol
Inj.:
lI-Il split(1:10), 4mmSiltek" treatedsinglegooseneck
inlet liner (cat.# 20798)
In],
temp.:
250°C
Carrier gas:
Flowrate:
helium,constant flow
1ml /min.
2
Oven ternp.:
40°C(3 min.)to 300°C
@
25°C/min.(hold 5min.)
Det:
MS
Transfer line
temp.:
280°C
Scan range:
35·200 amu
Ionization:
EI
Mode:
scan
1.
GBl ·d6 (rn/z
92)
2. GBl (rn/ z
86)
GC.PHOOS6S
.1
",:..
I .•
.1"
"I, .
10' , • •
.I~
.1. ..
I.
.,
~
.JI .
,I
I
nT" " ."
i
~
j
"
I'
!
.
~
4
4.5
5.0
5.5
6.0
Because this methodology for analyzing GHB in
biofluid s employs samp le introduction through a
headspace technique, the need for injector and col
umn maintenance is dramatically reduced. The
use of an existing headspace GC system for blood
alcohol analysis eliminates the need for additiona l
equipmen t and allows rapid and reliable screen
ing, using the same Rtx®-BACl or Rtx®-BAC2 col
umn. For positive results, an Rxi™-Sms column in
a
GC/MS
system provides accurate con firmation
and quantification of GHB.
Reference
1 l eBeau, M.A., M.A. Montgomery, M.l Miller,and S.G. Burmeister,
J.
Anal.Toxicol. 24 (6): 421-428(Sept.2000).
Rtx@-BAC1 Columns (fused silica)
10
df
film)
temp. limits
length cal
#
price
9.32mm L 80 -20 to
2401260°C
30-Meter 18003 $485
0.53mm 3.00 -20 to
2401260°C
30-Meter 18001 $510
Rtx@·BAC2 Columns (fused silica)
10
df
film)
temp.limits
length cal
#
price
0.32mm 1.20 -20 to
2401260°C
30-Meter 18002 $485
0.53mm 2.00 -20 to
2401260°C
30-Meter 18000 $510
Figure 4
Overlay of extracted ion chromatograms
for GBLand GBL-d6.
Column:
Sample:
Inj.:
Inj. temp.:
Carrier gas:
Flow rate:
Oven temp.:
Det:
Transfer line
temp.:
Scan range:
Ionization:
Mode:
Rxi™-5ms 30m, 0.25mm!D, 0.251-/m (cat.# 13423)
50l-/g/ml
gamma-butyrolactone (GBl) and 251-/g/ ml gamma
butyrolactone-d6 (GBl -d6) inmethanol
lI-Il split (1:10), 4mmSiltek" treated single gooseneckinlet
liner (cat.# 20798-214.1)
250°C
helium, constant flow
1ml / min.
40°C(3min.)to300°C
@
25°C/min. (hold5 min.)
MS
280°C
35-200 amu
EI
scan
1.
GBl-d6
(m/z
92)
2. GBl (m/z B6)
.I
Jl
1, ,11
Ile.
J
ol. L
,j
GCPH00869
4.0
4.5
5.0
5.5
free
literatur e
2
6.5
Clinical/Forensics Products
&
Applications for GC
&
HPlC
(2006/07
Edition)
This 64-page catalog presents a wealth of information about clinical and forensic analyses by GC
and HPl C. Clinical applications include analgesics, antihistamines, cardiac medications, CNS depres
sants, cold
&
sinus medications, steroids, and more; forensic applications include arson acceler
ants, anesthetics, barbiturates, blood alcohol, butyrolactone, cannabinoids, cocaine, opiates, and
more. I ncludes references to many additional free Restek publications that discuss specific subjects
in detail. lit cat# 59989A
2006.03
• 5 •
Rxi™-5ms Columns (fused silica)
(Crossbond" 5%diphenyl
I
95%dimethyl polysiloxane)
10
dffllm)
temp. limits
length cat
#
price
0.18mm 0.18 ·60 to
330/350°C
20-Meter 13402 $370
0.18mm 0.36 -60 to
330/350°C
20-Meter 13411 $370
0.20mm 0.33 -60 to
330/350°C
12-Meter 13497 $230
0.20mm 0.33 -60 to
330/350°C
25-Meter 13498 $365
0.20mm 0.33 -60 to
330/350°C
50-Meter 13499 $630
0.25mm 0.25 -60 to
330/350°C
I S-Meter 13420
$~
0.25mm 0.25 -60 to
330/350°C
30-Meter 13423 $435
0.25mm 0.25 -60 to
330/350°C
60-Meter 13426 $780
0.25mm 0.50 ·60 to
330/350°C
I S-Meter 13435 $260
0.25mm 0.50 -60 to
330/350°C
30-Meter 13438 $435
0.25mm 0.50 -60 to
330/350°C
60-Meter 13441 $780
0.25mm LOO
-60 to
330/350°C
15·Meter 13450 $260
0.25mm l.00 -60 to
330/350°C
30-Meter 13453 $435
0.25mm LOO -60 to
330/350°C
60-Meter 13456 $780
Universal "Y" Press-Tlqht" Connectors
An
alternative method of performing dual-column
confirmational analyses!
20405
Descri lion
Universal "Y" Press-Tight@Connector
DeactivatedUniversal
"Y" Press-Ti ht@Connector
20405-261
$62
S
iltek~
Treated Universal
"Y" Press-
Tight~
Connector
20485
$63
For a complete list of connectors, refer to our catalog or website.
800-356-1688 • www.rest
ek.comWebsite :
www.chromtech.net.auE-mail :
info@chromatech.net.auTelNo : 03 9762 2034 . . . in AUSTRALIA