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PAHs and PCB Congeners on Rxi®-XLB
GC COLUMNS |
HIGH-PERFORMANCE Rxi® COLUMNS
Rxi®-XLB
tech tip
Rxi®-XLB columns for Method 525
In combination with an Rxi®-XLB column,
simple adjustments to the injection
conditions can greatly improve sensitivity
for active and high molecular weight
Method 525 target compounds.
By eliminating contact between the
sample and the hot metal surfaces in the
injection port, a drilled Uniliner® inlet liner
prevents analytes from degrading in the
injection port.
similar phases
DB-XLB, VF-Xms, MR1, ZB-XLB
Rxi®-XLB Columns
(fused silica)
(low-polarity proprietary phase)
• General-purpose columns exhibiting extremely low bleed. Ideal for many GC-MS
applications, including pesticides, PCB congeners (e.g., Aroclor mixes), PAHs.
• Unique selectivity.
• Temperature range: 30 °C to 360 °C.
Improvements in polymer synthesis and tubing deactivation enable us to make inert,
stable Rxi®-XLB columns especially well-suited for analyzing active, high molecular
weight compounds with sensitive GC-MS systems, including ion trap detectors. Ex-
cellent efficiency, coupled with inertness, low bleed, and high thermal stability, make
Rxi®-XLB columns ideal for analyzing semivolatile compounds in drinking water.
*Maximum temperatures listed are for shorter length columns. Longer columns may have a different maximum temperature.
9.92 9.97 10.02 10.07 10.12 10.17 10.22 10.27 10.32
6.08
7.08
8.08
9.08
10.08
11.08
12.08
13.08
14.08
15.08
16.08
17.08
18.08
19.08
20.08
21.08
22.08
15.66 15.71 15.76 15.81 15.86 15.91 15.96 16.01 16.06
14.90 14.95 15.00 15.05 15.10 15.15 15.20 15.25 15.30
1
2
3
4
5
8
18
19
20
21
9
23
24
6
7
8 9
10
11
12
13
14
15 16 17
18
19
20
21
22
23
24 25
26
27,28
29
Benzo[b] uoranthene &
benzo[k] uoranthene
PCB 180, Benzo[a]anthracene,
chrysene, & triphenylene
PCB 31 & 28
Time (min)
GC_EV1223
Column
Rxi®-XLB, 30 m, 0.25 mm ID, 0.25 µm
(cat.# 13723)
Sample
SV calibration mix #5 / 610 PAH mix
(cat.# 31011)
Benzo(e)pyrene (cat.# custom)
Triphenylene (cat.# custom)
2-Methylnaphthalene (cat.# 31285)
2-Methylfluoranthene (cat.# custom)
PCB congener standard #2 (cat.# 32294)
PCB 31 (cat.# custom)
Diluent:
Dichloromethane
Injection
Inj. Vol.:
0.5 µL splitless (hold 1.75 min)
Liner:
2.0 mm ID straight inlet liner w/wool
(cat.# 21718)
Inj. Temp.:
300 °C
Purge Flow:
50 mL/min
Oven
Oven Temp.:
40 °C (hold 2 min) to 240 °C at 30 °C/
min (hold 2 min) to 340 °C at 10 °C/min
(hold 5 min)
Carrier Gas
He, constant flow
Flow Rate:
1 mL/min
Detector
MS
Mode:
Scan
Transfer Line
Temp.:
300 °C
Analyzer Type:
Quadrupole
Source Temp.:
280 °C
Electron Energy: 70 eV
Solvent Delay
Time:
4 min
Tune Type:
manual
Ionization Mode: EI
Scan Range:
45-550 amu
Scan Rate:
5 scans/sec
Instrument
PE Clarus 500 GC & Clarus 500 MS
Peaks
Conc.
(µg/mL)
1. Naphthalene
5
2. 2-Methylnaphthalene
5
3. Acenaphthylene
5
4. Acenaphthene
5
5. Fluorene
5
6. Phenanthrene
5
7. Anthracene
5
8. PCB 31
1
9. PCB 28
1
10. PCB 52
1
11. Fluoranthene
5
12. PCB 101
1
13. Pyrene
5
14. 2-Methylfluoranthene
5
15. PCB 118
1
16. PCB 153
1
17. PCB 138
1
18. PCB 180
1
19. Benzo[a]anthracene
5
20. Chrysene
5
21. Triphenylene
5
22. PCB 194
1
23. Benzo[b]fluoranthene
5
24. Benzo[k]fluoranthene
5
25. Benzo[e]pyrene
5
26. Benzo[a]pyrene
5
27. Dibenzo[a,h]anthracene
5
28. Indeno[1,2,3-cd]pyrene
5
29. Benzo[g,h,i]perylene
5
15-Meter
30-Meter
60-Meter
ID
df
temp. limits*
cat.#
price
cat.#
price
cat.#
price
0.25 mm 0.10 µm 30 to 340/360 °C
13705
13708
0.25 µm 30 to 340/360 °C
13720
13723
13726
0.50 µm 30 to 340/360 °C
13738
1.00 µm 30 to 340/360 °C
13753
0.32 mm 0.25 µm 30 to 340/360 °C
13724
13727
0.50 µm 30 to 340/360 °C
13739
1.00 µm 30 to 340/360 °C
13754
0.53 mm 0.50 µm 30 to 320/360 °C
13740
20-Meter
ID
df
temp. limits
cat.#
price
0.18 mm 0.18 µm 30 to 340/360 °C
43702