636
GC CHROMATOGRAMS |
FOODS, FLAVORS & FRAGRANCES
Food Contaminants
Polycyclic Aromatic Hydrocarbons in
Infant Formula with and without QuEChERS dSPE Clean-up
Rxi®-5Sil MS
Compound list and ions monitored (SIM mode)
Compound
m/z
1. decafluorobiphenyl (SS)
265
2. naphthalene
128
3. 2-methylnaphthalene
142
4. 1-methylnaphthalene
142
5. acenaphthylene
152
6. acenaphthene
152
7. fluorine
166
8. phenanthrene-d10 (IS)
188
9. phenanthrene
178
10. anthracene
178
11. fluoranthene
202
12. pyrene
202
13. benzo(a)anthracene
228
14. chrysene
228
15. benzo(b)fluoranthene
252
16. benzo(k)fluoranthene
252
17. benzo(a)pyrene
252
18. indeno(1,2,3-cd)pyrene
276
19. dibenzo(a,h)anthracene
278
20. benzo(ghi)perylene
276
Column:
Rxi
®
-5Sil MS, 30m, 0.25mm ID, 0.25µm (cat.# 13623)
Sample:
liquid infant formula spiked at 1µg/mL with decafluorobiphenyl (cat.# 31842) and EPA Method 8310 PAH Mixture (cat.# 31841) and at 0.5µg/mL with
internal standard phenanthrene-d10 (cat.# 31045), then extracted with acetonitrile and Q-sep™ Q110 QuEChERS extraction tube (cat.# 26213)
A. extract with clean-up using Q-sep™ Q210 QuEChERS dSPE clean-up tube (cat.# 26215)
B. extract without clean-up
Inj.:
1.0µL splitless (hold 0.15 min.),
3.5mm single gooseneck liner with w/wool (cat.# 22286-200.1)
Inj. temp.:
300°C
Carrier gas:
helium, constant flow
Flow rate:
1.4mL/min.
Oven temp.:
50°C (hold 0.5 min.) to 290°C @ 25°C/min. to 320°C @ 5°C/min. (hold 5 min.)
Det:
MS
Mode:
scan (SIM shown below)
Transfer line temp.: 290°C
Analyzer Type:
Quadrupole
Scan range:
100-350amu
Ionization:
EI
Instrument:
Shimadzu 2010 GC & QP2010 Plus MS
GC_FF01122
Q-sep™ Q250
QuEChERS clean-up
SIM Mode
Scan Mode
GC_FF01123
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Mar 2011
