GC Analysis of Phthalate Esters in Corn Oil (Spiked) on SLB®-5ms after SPME with a 100 μm PDMS Fiber
CONDITIONS
sample/matrix
corn oil spiked with phthalate esters at 500 μg/kg
SPME fiber
100 μm PDMS (57300-U)
extraction
headspace, 95 °C (measured in headspace)
desorption process
260 °C for 4 min
column
F.S. CAP. SLB-5ms 20 m x 0.18 mm I.D., 0.18 μm (28564-U)
oven
60 °C (1 min), 10 °C/min to 330 °C (10 min)
inj. temp.
260 °C
carrier gas
helium, 0.6 mL/min, constant
liner
0.75 mm I.D. SPME
sample
Corn oil
Description
Analysis Note
In this application, SPME was used for the analysis of phthalate esters from oily samples, specifically the oil-based flavor packets included with ramen noodle kits. Spiked samples of corn oil and flavored oils included with ramen noodle kits were analyzed using high temperature SPME headspace extraction using a 100 μm PDMS fiber which was then directly desorbed into the GC/MS system. Calibration standards were prepared in corn oil, and spiked samples of chicken and beef oil-based flavors were analyzed. The SLB-5ms GC columns provide consistently low-bleed, inert, efficient, and durable separations.
Legal Information
SLB is a registered trademark of Merck KGaA, Darmstadt, Germany