GC Analysis of Phthalate Esters in Corn Oil (Spiked) on SLB®-5ms after SPME with a 100 μm PDMS Fiber
Materiales
analytical column
Related product
Viales, tapón de rosca, vidrio transparente (solo vial)
volume 15 mL, clear glass vial, thread for 18-400, pkg of 100 eaScrew cap, polypropylene, with open center
black phenolic hole cap, for use with 15 mL vial with 18-400 thread, pkg of 100 eaSepta, tan PTFE/silicone
white tan PTFE/silicone, diam. × thickness 16 mm × 0.090 in., for use with 15 mL vial, pkg of 100 eaSPME fiber
Filtro SPME Polidimetilsiloxano (PDMS)
df 7 μm(PDMS, needle size 24 ga, for use with manual holderFiltro SPME Polidimetilsiloxano (PDMS)
df 100 μm(PDMS, for use with autosampler, needle size 23 gaFiltro SPME Polidimetilsiloxano (PDMS)
df 100 μm(PDMS, needle size 24 ga, for use with manual holderstandard
Bis(2-ethylhexyl) phthalate
certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, SwitzerlandDibutyl phthalate
certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, SwitzerlandDiisobutyl phthalate
certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, SwitzerlandCONDITIONS
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
Descripción
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