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pounds, which are only partially separated with a typical 17 type col-
umn. Similarly, benzofluoranthenes b, k, and j are isobaric compounds
that must be reported separately, and the Rxi®-17Sil MS column reliably
resolves all 3 isomers, even in a 15 m length. The unique selectivity of
the Rxi®-17Sil MS column gives you more resolving power and better
accuracy for challenging PAHs.
For more information on new Rxi®-17Sil MS columns, visit
Figure 2 Rxi®-17Sil MS columns let you accurately report PAHs that cannot be distinguished by MS.
GC_EV1186
Peaks
7. Phenanthrene
8. Anthracene
GC_EV1188 GC_EV1189
Peaks
14. Benzo(b)fluoranthene
15. Benzo(k)fluoranthene
16. Benzo(j)fluoranthene
GC_EV1181
Rxi®-17Sil MS columns
provide better resolution
of critical PAHs than
conventional
“17” type columns
Column: Rxi®-17Sil MS, 15 m, 0.25 mm ID, 0.25 µm (cat.# 14120)
Sample: 20 ng/µL in methylene chloride; Injection: Inj. Vol.: 1 µL
split (split ratio 20:1); Liner: 4mm Split Precision® Liner w/Wool
(cat.# 21022); Inj. Temp.: 275 °C; Split Vent Flow Rate: 42 mL/min.;
Oven Temp: 80 °C (hold 1 min.) to 320 °C at 15 °C/min. (hold 2 min.);
Carrier Gas: H2, constant flow, 2 mL/min.; Detector: FID @ 340 °C;
Constant Column + Constant Make-up: 50 mL/min.; Make-up Gas
Type: N2; Data Rate: 20 Hz; Instrument: Agilent/HP6890 GC. For
peak identifications, visit and search for
GC_EV1186.
GC_EV1183 GC_EV1185
Peaks
14. Benzo(b)fluoranthene
15. Benzo(k)fluoranthene
16. Benzo(j)fluoranthene
*Maximum temperatures listed are for 15- and 30-meter lengths. Longer
lengths may have a slightly reduced maximum temperature.
ID df (µm) temp. limits length qty. cat. #
0.18mm 0.18µm 40 to 340/360°C 20m ea. 14102
0.18mm 0.36µm 40 to 340/360°C 20m ea. 14111
0.25mm 0.25µm 40 to 340/360°C 15m ea. 14120
0.25mm 0.25µm 40 to 340/360°C 30m ea. 14123
0.25mm 0.25µm 40 to 340/360°C 60m ea. 14126
0.32mm 0.25µm 40 to 340/360°C 15m ea. 14121
0.32mm 0.25µm 40 to 340/360°C 30m ea. 14124
Rxi®-17Sil MS Columns (fused silica)
(mid polarity Crossbond® silarylene phase; equivalent to 50% phenyl
methyl polysiloxane)
Typical “17” type columns
do not provide adequate
resolution of the key PAHs.
Peaks
7. Phenanthrene
8. Anthracene
3
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