GC Analysis of Organophosphorus Pesticides (OP-Pest) on a 5% Phenyl Column after SPME using 100 μm PDMS Fiber
Materiais
Fibra para SPME
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Preços
Conjunto de fibras para microextração em fase sólida (SPME) de polidimetilsiloxano (PDMS)
100 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, plain red hubcoluna analítica
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CONDITIONS
sample/matrix
50 ppb each in 1.5 mL saturated salt water, pH 7.2
SPME fiber
polydimethylsiloxane, 100 μm (57300-U)
extraction
20 min immersion with rapid stirring
column
5% phenyl polysiloxane, 30 m × 0.25 mm I.D., 0.25 μm (Supelco equivalent, SLB-5ms, 28471-U)
oven
60 °C (1 min) to 300 °C at 12 °C/min, hold 5 min
inj. temp.
splitless (0.75 mm I.D. liner), 270 °C
detector
MS (m/z = 45-400, 0.6sec/scan)
carrier gas
helium, 30 cm/sec