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GC COLUMNS | APPLICATION-SPECIFIC COLUMNS
Foods, Flavors, & Fragrances
PAHs in Food Analysis
Rxi®-PAH Columns (fused silica)
(midpolarity proprietary phase)
• Ideal for EFSA PAH4 analysis—separates all priority compounds: benz[a]
anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene.
• Best resolution of chrysene from interfering PAHs, triphenylene, and
cyclopenta[cd]pyrene.
• Complete separation of benzo [b], [k], [ j], and [a] fluoranthenes.
• 360 °C thermal stability allows analysis of low volatility dibenzo pyrenes.
The Rxi®-PAH GC columns were designed by Restek with a higher phenyl-content
stationary phase that provides unique selectivity to separate important polycyclic
aromatic hydrocarbons (PAH) for food safety that cannot be distinguished by mass
spectrometry. Even difficult priority compounds, such as the European Food Safety
Authority (EFSA) PAH4, are easily separated and accurately quantified—results that
cannot be achieved on typical GC columns. Arylene modification and surface bond-
ing of the stationary phase increase thermal stability and ruggedness so relatively
nonvolatile, higher molecular weight PAHs can be analyzed routinely without inter-
ference from column bleed. Excellent column efficiency means that the column can
be trimmed for maintenance purposes many times without losing critical PAH
separations, including those that are part of environmental methods, as well as food
safety testing. The selectivity and efficiency of the Rxi®-PAH column make it ideal
for EFSA PAH4 analysis; chrysene/triphenylene separation and resolution of all
benzofluoranthenes are easily achieved.
30-Meter 40-Meter 60-Meter
ID df temp. limits cat.# price cat.# price cat.# price
0.18 mm 0.07 µm to 360 °C 49316
0.25 mm 0.10 µm to 360 °C 49318 49317
Rxi®-PAH GC Column
Resolve Important Isobaric
Polycyclic Aromatic Hydrocarbons
for Food Safety and Environmental
Methods
lit. cat.#
GNTS1718-UNV
Download your
free copy from
NIST SRM 2260a PAH Mix on Rxi®-PAH
GC_FF1223
Peaks
1. Naphthalene
2. Biphenyl
3. Acenaphthylene
4. Acenaphthene
5. Fluorene
6. Dibenzothiophene
7. Phenanthrene
8. Anthracene
9. 4H-Cyclopenta[def]phenanthrene
10. Fluoranthene
11. Pyrene
12. Benzo[ghi]fluoranthene
13. Benzo[c]phenanthrene
14. Benz[a]anthracene
15. Cyclopenta[cd]pyrene
16. Triphenylene
17. Chrysene
18. Benzo[b]fluoranthene
19. Benzo[k]fluoranthene
20. Benzo[j]fluoranthene
21. Benzo[a]fluoranthene
22. Benzo[e]pyrene
23. Benzo[a]pyrene
24. Perylene
25. Dibenz[a,j]anthracene
26. Dibenz[a,c]anthracene
27. Indeno[1,2,3-cd]pyrene
28. Dibenz[a,h]anthracene
29. Benzo[b]chrysene
30. Picene
31. Benzo[ghi]perylene
32. Anthanthrene
33. Dibenzo[b,k]fluoranthene
34. Dibenzo[a,e]pyrene
35. Coronene
36. Dibenzo[a,h]pyrene
For conditions,
visit
and enter GC_FF1223 in
the search.
“The Rxi®-PAH column enabled
us to separate important PAH
derivative isomers, which we were
experiencing trouble with for
months. This column is excellent for
PAH, NPAH, and OPAH separation
and I would recommend anyone
working in this field to try it out.
Thank you Restek!”
Mohammed Salim Alam
Research Fellow
University of Birmingham, UK