63
GC COLUMNS |
APPLICATION-SPECIFIC COLUMNS
Special ly Deact ivated
Basic Compounds Analysis
NEW!
similar
phases
Direct replacement for CP-Volamine,
thick-film CP-Sil 8 for amines, and other
amine-deactivated columns coated with
low polarity polysiloxane phases.
Rtx®-Volatile Amine Columns
(fused silica)
• Unique selectivity for baseline resolution of all volatile amines.
• Excellent inertness assures accuracy and sensitivity for volatile amines,
including free ammonia.
• Highly robust phase withstands repeated water injections, resulting in longer
column lifetime.
• High temperature stability (290 °C) ensures elution of amines up to C16 and allows
contaminants to be removed by “baking out” the column.
The Rtx®-Volatile Amine column was designed specifically for analyzing volatile amines
in difficult matrices, such as water. The unique base deactivation creates an exception-
ally inert surface for these sensitive compounds, resulting in highly symmetric peaks
which allow low detection limits. The stable bonded phase yields a column that is not
only retentive and highly selective for these compounds, but is also very robust and able
to withstand repeated water injections. Comparisons made by customers performing
routine volatile amine applications have shown the Rtx®-Volatile Amine column out-
performs other amine-specific columns, especially for peak shape and lifetime. Each
Rtx®-Volatile Amine column is held to stringent quality specifications and tested with
a specially designed test mix that includes basic compounds to ensure exceptional inert-
ness, reliability, and reproducibility. These qualities assure consistent performance and
make the Rtx®-Volatile Amine column the best choice for volatile amines analysis.
Short chain amines in water on an Rtx®-Volatile Amine column.
Peaks
1. Methanol
2. Dimethylamine
3. Trimethylamine
4. Methylethylamine
5. Dimethylethylamine
6. Diethylamine
7. Methyldiethylamine
8. Triethylamine
IS = isopropylamine
Column
Rtx
®
-Volatile Amine, 60 m, 0.32 mm ID (cat.# 18078)
Sample
Short chain amines
Diluent:
Water
Conc.:
200-1,000 ppm
Injection
Inj. Vol.:
1.0 µL split (split ratio 15:1)
Inj. Temp.:
220 °C
Split Vent Flow Rate: 30 mL/min.
Oven
Oven Temp:
40 °C (hold 10 min.) to 250 °C at 20 °C/min.
(hold 10 min.)
Carrier Gas
H
2
, constant flow
Flow Rate:
2.0 mL/min.
Linear Velocity:
35 cm/sec. @ 40 °C
Detector
FID @ 250 °C
Instrument
Agilent/HP6890 GC
Acknowledgement Chromatogram courtesy of Mr. Gilbert Baele
of Taminco, Belgium
GC_GN1154
ID
temp. limits
15-Meter
30-Meter
60-Meter
0.32mm
-60 to 290°C
18076
18077
18078
please
note
We recommend using base-deactivated
fused silica guard columns
(page 34)
and
base-deactivated liners (
page 213
) with
Rtx®-Volatile Amine columns.
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
