| 007-1 |
|
dimethylpolysiloxane |
|
Bonded and Crosslinked
Non polar
Excellent thermal stability
Comparable to: SE-30, OV-1, OV-101 |
|
Similar phases: DB-1, Rtx
-1, HP-1, Ultra-1, SPB-1, CPSil-5CB, AT-1, BP-1, DB-Petro, DB-2887,
RTx-PONA, RTx-2887, HP-PONA, Petrocol-DH, Petrocol-2887, CP-SimDist-CB,
At-Petro
|
|
The non-polar
dimethylpolysiloxane phase (007-1), which separates compounds according to
boiling point, is probably the most frequently used phase type in GC.
Bonding and crosslinking this general purpose GC phase increases the
resistance to degradation by rinsing, large solvent injections and the
deposition of non-volatiles. The
007-1 phase offers excellent efficiency and thermal stability.
In addition, this non-polar phase is less susceptible to oxidation
and hydrolysis than phases incorporating more polar functional groups.
007-1 PHATTM
Phase Columns
In addition to the standard range of column configurations offered with
the 007-1 phase type, a new coating technology developed at Quadrex allows
us to extend the functional range of columns coated with this phase type
by the application of very thick films of the 007-1 phase.
For example, films up to 3.5 microns on 0.10mm I.D. fused silica
and 18.0 microns on 0.53mm I.D. fused silica are now possible.
These PHAT PhaseTM thick film columns are ideal for low
molecular weight analyses previously performed on packed columns.
Advantages
of PHAT PHASETM
fused silica capillary columns include:
greater sample size for trace
analyses of very volatile compounds
increased retention of volatile
compounds leading to higher elution temperatures
GC analyses of gases
and other types of low molecular weight compounds have been traditionally
accomplished on packed columns with heavy loadings or adsorbent type
columns. More recently, porous
layer open tubular (PLOT) capillary columns have been utilized in the
separation of low molecular weight applications despite the drawbacks in
using these types of columns such as sample adsorption and bead migration
within the column.
Attempts have been
made to use 'thick filmed' wall coated open tubular (WCOT) capillary
columns but the films have typically been confined to a maximum of 8.0
microns due to limitations in conventional column coating technology.
While these 'traditional' thick film columns have been used for
some for low molecular weight applications, they could not attain the
separations and sample loadings that could be achieved on packed columns.
By employing a newly
developed proprietary coating technique which we call Polymer Height
Augmentation Technology (PHATTM), we are now able to
reproducibly manufacture fused silica capillary columns having phase
ratios comparable to heavily loaded packed columns.
The PHAT PhaseTM columns are available with 007-1,
dimethylpolysiloxane and our 007-5, 5% phenyl methylpolysiloxane phases in
lengths up to 30 meters. These
PHAT PhaseTM thick film capillary columns are ideal for low
molecular weight analyses previously performed on packed columns.
The two SEM
photomicrographs below are of a 0.53mm I.D. fused silica column coated
with 007-1 dimethylpolysiloxane PHAT PhaseTM. Figure 1 (at 142x
magnification) clearly shows the internal diameter of the 0.53mm I.D.
column and the thick film coated on the internal surface.
Note that the phase coating is similar in thickness to
the columns' outer polyimide coating, which is typically 15-20 microns.
|
|
| Figure 1.
SEM of 0.53mm I.D. column bore showing PHAT PhaseTM
inner phase layer. Compare this inner phase layer to the
outer polyimide layer of approximately 15-20 microns. |
|
|
| Figure 2.
SEM measurement confirms the inner phase layer at 18.0 microns. |
Application areas for these PHAT
PhaseTM columns include the analysis of natural gas, auto emissions, light
hydrocarbon refinery cuts, amines, alcohols, free fatty acids,
refrigerants, residual solvents and air pollutants as defined in the EPA
TOC Methods.
|
| 007-1
AVAILABLE COLUMN
CONFIGURATIONS |
| I.D.
(mm) |
Lengths (Meters) |
Film thicknesses (microns) |
| 0.10 |
10,
15, 20, 25 |
0.1,
0.25, (0.5 on 10M. and 15M. only) |
| 0.18 |
10,
15, 25, 30, 40, 50 |
0.1,
0.25, 0.5 |
| 0.25 |
12,
15, 25, 30, 50, 60, 75, 100 |
0.1,
0.25, 0.33, 0.5, 1.0 |
| 0.32 |
10, 15, 25, 30, 50, 60, 75, 100 |
0.1,
0.25, 0.33, 0.5, 0.52, 1.0, (2.0, 3.0, 4.0, 5.0 on 60M.
or less) |
| 0.53 |
10,
15, 25, 30, 50, 60, 75, 100 |
0.1,
0.25, 0.5, 0.88, 1.0, 2.0, 2.65,
(3.0, 4.0, 5.0, 6.0,
7.0, 8.0 on 50M. or less) |
007-1 PHAT TM Phase extra thick film columns
|
| 0.10 |
10, 20 |
1.0,
3.5 |
| 0.18 |
15, 20,
30 |
1.0,
3.0, 5.0, 6.0 |
| 0.25 |
10, 15,
25, 30 |
3.0,
5.0, 8.0 |
| 0.32 |
10, 15,
25, 30 |
8.0,
10.0, 12.0 |
| 0.53 |
10, 15,
25, 30 |
10.0,
12.0, 15.0, 18.0 |
Inquire with
tech@quadrexcorp.com about custom lengths and films.
|
|
We have now added our
complete fused silica and Ultra-ALLOY stainless steel
column price lists. The lists are sorted by I.D. then
column length. You can CLICK HERE to go directly to column pricing, or can
link to the pricing pages on the individual column
information pages.
Click HERE to go directly to the 007-1 price page.
The columns listed are
those that are commonly requested by our customers. If
you do not see the column configuration you require,
CONTACT US, we will be happy to quote.
|
|
OPERATING TEMPERATURE RANGE |
| film thickness |
temperature range |
| up to 1.0 micron |
-50° C to 350° C |
| 2.0 to 5.0 micron |
up to 300° C |
| 6.0 to 8.0 micron |
up to 280° C |
| 9.0 to 12.0 micron |
up to 240° C |
| 12.0 and above |
up to 200° C |
| 007-1
Bonded Phase Retention Index |
| Phase |
benzene |
1-nitropropane |
2-pentanone |
pyridine |
butanol |
007-1
|
662.5
|
720
|
668.75
|
730
|
646.88
|
Every Quadrex capillary column
undergoes stringent testing utilizing either a modified Grob test mix or
application-specific test mix prior to shipping. An actual Capillary Column
Test Data Sheet , which includes the test chromatogram, operating conditions,
and general column information accompanies every column we ship.
For more information on the Grob Test, click
here.
Below are the results of a 007-1 column tested with
the Grob Test mix which shows the excellent level of deactivation achieved with
this phase.
Column: 25M. Bonded Methyl
Silicone
0.25mm I.D. x 0.5um film
Cat. No.: 007-1-25-0.5F Temperature: 40ē (6ēmin.) -
210ē (15ēmin.) - 320ēC
Flow: 25 cm/sec, Helium
Injector: 225ēC
Detector: 325ēC, FID
|
ELUTION ORDER
| 1.
2,3-butandiol |
7.
undecane |
| 2. decane |
8.
2,4-dimethylaniline |
| 3. 1-octanol |
9.
methyl decanoate |
| 4.
2,6-dimethylphenol |
10.
methyl undecanoate |
| 5. nonanal |
11.
dicyclohexylamine |
| 6.
ethylhexanoic acid |
12.
methyl dodecanoate |
|
Send mail to Webmaster@quadrexcorp.com with questions or comments about this web site.
Copyright Š 2002 Quadrex Corporation
Web Site Designed By Bob White From Duet Productions Ltd.
(We are not affiliated in any way with the Quadrex
Corporation (Symbol: QUAD) that appears on the stock market.)
|