GC Analysis of Phenols in Water on a 5% Phenyl Column after SPE using Supelclean^™ ENVI-Chrom P

sample preparation

SPE (Solid Phase Extraction)

sample/matrix

water spiked with phenol compounds

SPE tube/cartridge

Supelclean ENVI-Chrom P, 250 mg/6 mL (57225-U)

condition

6 mL methyl t-butyl or ethyl acetate; 6 mL acetonitrile. Equilibrate with 6 mL DI water

sample addition

100 mL water sample.

drying

10 min using vacuum

elution

5 mL methyl t-butyl ether acetate dropwise allowing initial 2 mL to soak in SPE bed

column

5% Phenyl Polysiloxane, 15 m × 0.53 mm I.D., 0.50 μm (Supelco equivalent, Equity-5, 28252-U)

oven

65 °C, 10 °C/min to 185 °C (1 min), 20 °C/min to 275 °C (5 min)

detector

FID, 300 °C

carrier gas

helium

injection

1 μL, splitless (45 sec hold)