103
GC COLUMNS |
APPLICATION-SPECIFIC COLUMNS
Envi ronmental
Volatile Organics Analysis
similar
phases
DB-624, HP-624, VF-624, BP-624, ZB-624,
AT-624, 007-1301, G43R
Rxi®-624Sil MS Columns
(fused silica)
(midpolarity Crossbond® silarylene phase; equivalent to 6% cyanopropylphenyl/
94% dimethyl arylene polysiloxane)
• Low bleed, high thermal stability column—maximum temperatures up to 320 °C.
• Inert—excellent peak shape for a wide range of compounds, including acidic and
basic compounds.
• Selective—highly selective for residual solvents, great choice for USP<467>.
• Manufactured for column-to-column reproducibility—well-suited for validated
methods.
Rxi®-624Sil MS Structure
X
Y
Z
Si
O
R
CH
3
CH
3
CH
3
C N
CH
3
Si
O
O
CH
3
CH
3
Si
CH
3
CH
3
Si
Volatiles by EPA Method 8260 on Rxi®-624Sil MS (30m, 0.25mm ID, 1.40μm)
Resolution of critical pairs, low
bleed, and high inertness make
this a great column for volatiles!
Column:
Rxi
®
-624Sil MS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 13868)
Sample:
8260A Surrogate Mix (cat.# 30240)
8260A Internal Standard Mix (cat.# 30241)
8260B MegaMix
®
Calibration Mix (cat.# 30633)
VOA Calibration Mix #1 (ketones) (cat.# 30006)
8260B Acetate Mix (revised) (cat.# 30489)
California Oxygenates Mix (cat.# 30465)
502.2 Calibration Mix #1 (gases) (cat.# 30042)
Conc.:
25 ppb in RO water
Injection
purge and trap split (split ratio 30:1)
Inj. Temp.:
225 °C
Purge and Trap
Instrument:
OI Analytical 4660
Trap Type:
10 Trap
Purge:
11 min. @ 20 °C
Desorb Preheat Temp.: 180 °C
Desorb:
0.5 min. @ 190 °C
Bake:
5 min. @ 210 °C
Interface Connection: injection port
Oven
OvenTemp:
35 °C (hold 5 min.) to 60 °C at 11 °C/min. to 220 °C
at 20 °C/min. (hold 2 min.)
Carrier Gas:
He, constant flow
Flow Rate:
1.0 mL/min.
Detector:
MS
Mode:
Scan
Transfer Line Temp.:
230 °C
Analyzer Type:
Quadrupole
Source Temp.:
230 °C
Quad Temp.:
150 °C
Electron Energy:
70 eV
Solvent Delay Time:
1.5 min.
Tune Type:
BFB
Ionization Mode:
EI
Scan Range:
36-260 amu
Instrument:
Agilent 7890A GC & 5975C MSD
XIC — = m/z 43
— = m/z 72
GC_EV1169
For peak list and complete conditions, see page 547.
NEW!
ID
df
temp. limits
20-Meter
30-Meter
60-Meter
0.18mm 1.00µm -20 to 300/320°C 13865
0.25mm 1.40µm -20 to 300/320°C
13868
0.32mm 1.80µm -20 to 300/320°C
13870
13872
0.53mm 3.00µm -20 to 280/300°C
13871
for
more
info
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
