GC Analysis of Semivolatiles in Drinking Water on a 5% Phenyl Column after SPE using ENVI^™-18 DSK

sample preparation

SPE (Solid Phase Extraction)

sample/matrix

acidified drinking water

SPE tube/cartridge

ENVI-18 DSK SPE Disk, 47 mm (57171)

condition

5 mL dichloromethane; 5 mL methanol; 5 mL DI water

sample addition

5 mL water sample

elution

2 x 5 mL acetonitrile rinsing internal chamber of sample reservoir thoroughly

column

5% phenyl polysiloxane, 30 m × 0.25 mm I.D., 0.25 μm (Supelco equivalent, SLB-5ms, 28471-U)

oven

40 °C to 160 °C (3 min), then to 300 °C (3 min) at 6 °C/min

detector

MS, scan range m/z = 45-450

carrier gas

helium, 33 cm/sec

injection

1 μL split/splitless, 1 min delay