2
Table 1. GC conditions
Column type
Thermo Scientific™ TraceGOLD TG-35MS
Column dimensions
(length × i.d. × film thickness)
30 m × 0.25 mm × 0.25 μm
P/N 26094-1420
Injector type, Temperature
SSL, 280 °C
Injection mode, Volume
Splitless, 1 µL
Carrier gas, flow
Helium, constant flow 1 mL/min
Oven program
80 °C, 1 min
10 °C/min to 280 °C
280 °C, 10 min
Transfer line temperature
280 °C
Table 2. MS Conditions
Ionization
EI, 70 eV
Scan mode, range
Full Scan, 50-350 Da
Acquisition rate
0.2 s
Ion source temperature
280 °C
Figure1. Chromatograms of a spiked sample (top) and of the standard compounds run (bottom).
Sample Measurements
First, the elution order of the phthalate compounds was
determined by analyzing a standard mixture at medium
concentration. The spectra observed were compared with
the NIST data base for identification and retention time
determination.
