636
GCCHROMATOGRAMS |
FOODS, FLAVORS&FRAGRANCES
Food Contaminants
PolycyclicAromaticHydrocarbons in
InfantFormulawithandwithoutQuEChERSdSPEClean-up
Rxi®-5SilMS
Compound list and ionsmonitored (SIMmode)
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/mLwith decafluorobiphenyl (cat.# 31842) and EPAMethod 8310 PAHMixture (cat.# 31841) and at 0.5µg/mLwith
internal standard phenanthrene-d10 (cat.# 31045), then extractedwith acetonitrile andQ-sep™Q110QuEChERS extraction tube (cat.# 26213)
A. extract with clean-up usingQ-sep™Q210QuEChERS dSPE clean-up tube (cat.# 26215)
B. extract without clean-up
Inj.:
1.0µL splitless (hold 0.15min.),
3.5mm single gooseneck liner withw/wool (cat.# 22286-200.1)
Inj. temp.:
300°C
Carrier gas:
helium, constant flow
Flow rate:
1.4mL/min.
Oven temp.:
50°C (hold 0.5min.) to 290°C@ 25°C/min. to 320°C@ 5°C/min. (hold 5min.)
Det:
MS
Mode:
scan (SIM shown below)
Transfer line temp.: 290°C
AnalyzerType:
Quadrupole
Scan range:
100-350amu
Ionization:
EI
Instrument:
Shimadzu 2010GC&QP2010 PlusMS
GC_FF01122
Q-sep™Q250
QuEChERS clean-up
SIMMode
ScanMode
GC_FF01123
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Mar 2011
