Table 2. Gas chromatography mass spectrometry operation conditions for the analysis of volatile compounds in fermented hams

Type Hewlett Packard 6890 GC-FID and GC-MS system
Column (HP-5) 30 m length × 0.25 mm i.d. × 0.1 μL film thickness
Detector Flame ionization detector (FID)
5973 mass selective detector (MSD)
Carrier gas Helium
Injector type Splitless mode
Purge time 45 min
Purge flow 15 mL/min
Flow rate 1 mL/min
Inlet temperature 250℃
Detector temperature 270℃ in FID
Oven temperature Initial temp : 40℃
Initial holding time : 5 min
Rate : 4℃/min until 160℃
Rate : 10℃/min until 250℃
Final temp : 250℃
Final holding time : 6 min

5973 mass selective detector

Ion source temperature 178℃
Ionization energy 70 eV
Scan 2.0 Scans/s
Filament emission 1 mA
Library Wiley 77n MS library