GC Analysis of Phenols on SLB®-5ms after SPME using 60 μm Carbowax® Fiber
Materiali
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Gruppo fibre SPME, rivestimento in glicole polietilenico (PEG) Carbowax
60 μm PEG, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 3, purple hubCONDITIONS
sample/matrix
Phenols at 25 ppb in 0.1M phosphate buffer, pH 2, 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 autosampler
desorption process
(30 min. direct immersion with agitation using CombiPal autosampler)
column
SLB-5ms, 30 m x 0.25 mm I.D., 0.5μm film
oven
50°C(2.0 min) to 160°C @ 10°C/min to 280°C @ 20°C/min
inj. temp.
Splitless/split with 0.75mm ID liner and Merlin Microseal
detector
ITMS m/z=45-275 @ 0.7 μsec per scan, transfer line 310°C
carrier gas
Helium, 1mL/min constant flow, 8.7 psi
Descrizione
Note legali
Carbowax is a registered trademark of Union Carbide
SLB is a registered trademark of Merck KGaA, Darmstadt, Germany