633
GCCHROMATOGRAMS |
FOODS, FLAVORS&FRAGRANCES
Food Contaminants
1
2
9
3
4
5
6 7
8
10
11
12
0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Volatiles Standard
1. isopropanol
2. methylene chloride
3. 2-methyl-1-propanol
4. tetrahydrofuran
5. benzene
6. toluene
7. hexanal
8. furfural
9. 4-heptanone (IS)
10. butyl ether
11. styrene
12. dodecane
Column:
Rtx
®
-5MS, 30m, 0.25mm ID, 1µm (cat.# 12653)
Concentrator:
Tekmar LSC-3100 purge& trap
Trap:
Vocarb 3000, type K
Purge:
10min.@ 40mL/min.@ 60°C
Dry purge:
3min.@ 40mL/min.
Desorb preheat:
220°C
Desorb:
245°C, 2min., 40mL/min.
Bake:
230°C, 6min.
Interface:
1:20 split at injection port with 1mm ID liner
Transfer line:
0.53mm ID Silcosteel
®
MXT
®
tubing (cat.# 20591)
Oven temp.:
50°C to 92°C@ 3°C/min., to 220°C@
20°C/min., hold 1min.
Inj. temp.:
250°C
Carrier gas:
helium
Linear velocity:
36cm/sec. (1mL/min.)
Split ratio:
20:1
Det.:
MSD
Det. temp.:
280°C
Scan range:
35–260amu
Ionization:
EI@ 70 eV
FoodPackagingVolatiles
Rtx®-5MS
GC_FF00457
1. tetrahydrofuran
2. 1-butanol
3. toluene
4. hexanal
5. ethylbenzene
6. 4-heptanone
7. butyl ether
8. styrene
9. 1-methylethylbenzene
10. propylbenzene
11. benzaldehyde
12. benzeneacetaldehyde
13. acetophenone
14. benzoic acid, methyl ester
15. decanal
Column:
Rtx
®
-5MS, 30m, 0.25mm ID, 1µm (cat.# 12653)
Concentrator:
Tekmar LSC-3100 purge& trap
Trap:
Vocarb 3000, type K
Purge:
10min.@ 40mL/min.@ 60°C
Dry purge:
3min.@ 40mL/min.
Desorb preheat:
220°C
Desorb:
245°C, 2min., 40mL/min.
Bake:
230°C, 6min.
Interface:
1:20 split at injectionwith 1mm ID liner
Transfer line:
0.53mm ID Silcosteel
®
MXT
®
tubing (cat.# 20591)
Inj. temp.:
250°C
Carrier gas:
helium
Linear velocity:
36cm/sec. (1mL/min.)
Split ratio:
20:1
Oven temp.:
50°C to 92°C@ 3°C/min., to 220°C@
20°C/min, hold for 1min.
Det. :
MSD (Agilent 5973)
Det. temp.:
280°C
Scan range:
35-260amu
Ionization:
EI@ 70eV
GC_FF00459
FoodPackagingVolatiles
Rtx®-5MS
Website :
E-mail :
TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
