GC Analysis of Triazine Herbicides on SLB®-5ms after SPME using 60 μm Carbowax® Fiber
CONDITIONS
sample/matrix
Triazine herbicides at 2 ppb in 0.1M phosphate buffer, pH 7, with 25% NaCl, 9 mL in 10 mL screw cap vial
SPME fiber
60 μM Carbowax (PEG) (57354-U)
extraction
30 min direct immersion with agitation using CombiPal program
desorption process
2 min at 250°C, splitless for 0.75 min then opened
column
SLB-5ms, 30 m x 0.25 mm I.D., 0.5μm film
oven
60°C(1 min) to 150°C @ 25°C/min to 230°C @ 5°C/min (0.5 min)
inj. temp.
Splitless/split with 0.75mm ID liner and Merlin Microseal
detector
ITMS m/z=150-250 @ 0.5 μsec per scan, transfer line 310°C
carrier gas
Helium, 1mL/min constant flow
Description
Legal Information
Carbowax is a registered trademark of Union Carbide
SLB is a registered trademark of Merck KGaA, Darmstadt, Germany