69 / 629
www.restek.com
67
GC COLUMNS |
APPLICATION-SPECIFIC COLUMNS
Environmental
Dioxin & Furan Analysis
Dioxins (TCDDs) and Furans (TCDFs) in Fly Ash on an Rxi®-5Sil MS column
GC_EV1194
TCDDs
GC_EV1195
Column
Rxi®-5Sil MS , 60 m, 0.18 mm ID, 0.10 µm (cat.#43607)
Sample
Fly ash extract
Diluent:
Nonane
Injection
Inj. Vol.:
1 µL splitless
Liner:
2 mm splitless liner (cat.# 20712)
Oven
Oven Temp.:
120 °C (hold 1 min) to 160 °C at 10 °C/min to 300°C at 2.5°C/min
Carrier Gas
He, constant flow
Flow Rate:
1 mL/min
Detector
Waters AutoSpec Ultima Mass Spectrometer
Source Temp.:
280 °C
Ionization Mode: EI
Notes
Electron Ionization at 40eV
Acknowledgement
Chromatogram courtesy of Karen MacPherson,
Li Shen, Terry Kolic, and Eric Reiner at the
Ontario Ministry of the Environment
TCDFs
Similar to: (5%-phenyl)-methylpolysiloxane
Rxi®-5Sil MS Columns
(fused silica)
(low-polarity phase; Crossbond® 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane)
• Engineered to be a low-bleed GC-MS column.
• Excellent inertness for active compounds.
• Ideal for use in dual column confirmation of dioxin and furan.
• Temperature range: -60 °C to 350 °C.
The Rxi®-5Sil MS stationary phase incorporates phenyl groups in the polymer back-
bone. This improves thermal stability, reduces bleed, and makes the phase less prone
to oxidation. Rxi®-5Sil MS columns are ideal for GC-MS applications requiring high
sensitivity, including use in ion trap systems.
Rxi®-5Sil MS Structure
95%
5%
CH
3
CH
3
Si
O
O
CH
3
CH
3
Si
CH
3
CH
3
Si
similar phases
DB-5ms, DB-5msUI, VF-5ms, ZB-5ms,
ZB-SemiVolatiles, Rtx-5Sil MS
30-Meter
60-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
0.18 mm 0.10 µm -60 to 320/350 °C
43607
0.25 mm 0.25 µm -60 to 320/350 °C
13623