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Polycyclic aromatic hydrocarbon (PAH) analy-
sis is a growing area of environmental and
food safety testing, due to the ubiquitous
presence and reported genotoxicity and car-
cinogenicity of some compounds in this class.
As target lists expand and health concerns
drive detection levels lower, reporting
requirements are more difficult to meet and
column selectivity becomes an important fac-
tor in achieving accurate results.
New Rxi®-17Sil MS columns are optimized for
PAHs and are the best choice for accurate,
trace level detection. Rxi®-17Sil MS columns
differ in phase chemistry from conventional
17 type (50% diphenyl) columns, and the
resulting selectivity provides better resolution
of critical PAHs (Figure 1). Not all 50% phenyl
columns are equivalent—Rxi®-17Sil MS
columns let you quantify isobaric PAHs that
cannot be determined by mass spectrometry.
Unique Selectivity Means More
Accurate PAH Data
Little differences mean a lot. At first glance,
PAH separations on the new Rxi®-17Sil MS and
typical “17” type columns appear to be similar,
but the difference in selectivity becomes clear
when looking at critical separations (Figure 2).
Isobaric compounds phenanthrene and
anthracene have essentially indistinguishable
mass spectra and must be chromatographical-
ly resolved. The Rxi®-17Sil MS column provides
baseline resolution of these critical com-
• Unique phase chemistry provides better resolution than other “17”
type columns.
• Optimized selectivity separates a wide range of key PAHs.
• Rxi® technology assures accurate, reliable trace level analyses.
GC_EV1160
1. Naphthalene*▲
2. 2-Methylnaphthalene
3. 1-Methylnaphthalene
4. Acenaphthylene▲
5. Acenaphthene▲
6. Fluorene*▲
7. Phenanthrene*▲
8. Anthracene *▲
9. Fluoranthene *▲
10. Pyrene*▲
11. Benz(a)anthracene *▲
12. Chrysene*▲
13. Triphenylene
14. Benzo(b)fluoranthene*▲
15. Benzo(k)fluoranthene*▲
16. Benzo(j)fluoranthene
17. Benzo(a)pyrene *▲
18. 3-Methylcholanthrene
19. Dibenz(a,h)acridine
20. Dibenz(a,j)acridine
Column: Rxi®-17Sil MS, 30 m, 0.25 mm ID, 0.25 µm (cat.# 14123)
Sample: SV Calibration Mix #5 / 610 PAH Mix (cat.# 31011);
EPA Method 8310 PAH Mixture (cat.# 31841);
Diluent: dichloromethane; Conc.: 10 ppm
Injection: Inj. Vol.: 0.5 µL splitless (hold 1.75 min.)
Liner: Auto SYS XL PSS Split/Splitless w/Wool (cat.# 21718)
Inj. Temp.: 320 °C; Purge Flow: 75 mL/min.
Oven: Oven Temp: 65 °C (hold 0.5 min.) to 220 °C at 15 °C/min.
to 330 °C at 4 °C/min. (hold 15 min.)
Carrier Gas: He, constant flow; Flow Rate: 2.0 mL/min.
Detector:FID @ 320 °C
Instrument:PE Clarus 600 GC
Acknowledgement: Instrument provided by PerkinElmer
Figure 1 Rxi®-17Sil MS columns ensure excellent resolution of PAHs of regulatory
or health concern.
Reliably quantify a wide range
of critical PAHs
21. Indeno(1,2,3-cd)pyrene*▲
22. Dibenz(a,h)anthracene *▲
23. Benzo(ghi)perylene ▲
24. 7H-Dibenzo(c,g)carbazole
25. Dibenzo(a,e)pyrene
26. Dibenzo(a,i)pyrene
27. Dibenzo(a,h)pyrene
*NOAA method compounds
▲EPA Method 610 compounds
2
New! Rxi®-17Sil MS Column
Separate PAHs that Cannot be Distinguished by Mass Spectrometry
Website : E-mail : TelNo : 03 9762 2034 . . . in AUSTRALIA