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RestekTrademarks:
MXT, Silcosteel,Rtx, and theRestek logo.
OtherTrademarks:
Vocarb (Supelco).
Product Listing
Rtx
®
-5MSFusedSilicaCapillaryColumns
ID df
temp.15-Meter 30-Meter 60-Meter
(mm) µm limits
0.25
0.10 -60 to 330/350°C 12605 12608 12611
0.25 -60 to 330/350°C 12620 12623 12626
0.50 -60 to 330/350°C 12635 12638 12641
1.00 -60 to 325/350°C 12650 12653
0.32
0.10 -60 to 330/350°C 12606 12609 12612
0.25 -60 to 330/350°C 12621 12624 12627
0.50 -60 to 330/350°C 12636 12639 12642
1.00 -60 to 325/350°C 12651 12654
0.53
0.50 -60 to 320/340°C 12637 12640
1.00 -60 to 320/340°C 12652 12655
1.50 -60 to 310/330°C 12667 12670
Optimized conditions and a low-bleedRtx
®
-5MS column
allow the analysis of awide range of volatile compounds.
Table I
GCParameters
Column:
Rtx
®
-5MS, 30m x 0.25mm x 1.0µm
(cat.# 12653)
Inj.:
250°C, 20:1 split
Carrier gas:
helium, 1mL/min., constant flow
Oven:
50°C to 92°C@ 3°C/min, to 220°C@
20°C/min. (1min. hold)
MSDParameters
Temp.:
280°C
Scan range
:
35-260, 1min. solvent delay
Ionization:
EI@ 70eV
Purge&TrapParameters
Concentrator:
Tekmar LSC-3100withVocarb
®
3000
(typeK) trap
Transfer line:
Silcosteel
®
-treated stainless steel tubing
Purge:
10min. at 40mL/min., 60°C
Dry purge:
3min. at 40mL/min.
Desorb:
2min. at 40mL/min., 245°C
Conclusion
The analysis of food contact packaging is an important part of
any food safety program. This is especially truewith thewide
variety of packagingmaterials available, the large range of
intended use conditions, and the increasing popularity of con-
venience foods.With a continuing consumer emphasis on
“speed tomouth,” foods often are heatedwithin the packaging
material. This application note discusses an optimized proce-
dure formonitoring common volatiles from food contact pack-
aging using purge and trapGC/MS and anRtx
®
-5MS capillary
column. TheRtx
®
-5MS column is an excellent choice for this
application.With its high stability and low bleed profile, it can
be used to screen for awide range of compounds byGC/MS.
Please refer to the FDAto obtainmore information on the regu-
latory requirements.
References
1. Schofield, J. Food FIPPMag. (1989), 11(1), pp. 38-41.
2. Requirements of Laws andRegulations Enforced by theUS
FDA(1997), available on theUSFDAwebsite.
3. Marsili, Ray. “Techniques for Evaluating PackagingMaterials”
in Food Product Design (1997), editorial archives.
4. Annual Book ofASTMStandards (1998),American Society for
Testing andMaterials,West Conshohocken, PA.
References not available fromRestek.
5mLFrittedSparger,
1
/
2
-inchmount:
cat.# 21150
25mLFrittedSparger,
1
/
2
-inchmount:
cat.# 21151
Purge-and-TrapSpargers
Moisture control by-pass line forTekmar 3000:
cat.# 21035
MoistureControl By-Pass Line
Restek’s Foods, Flavors, & Fragrances products and applications catalog (Lit. cat.# 59260) features 48
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