GC Analysis of Semivolatiles in Drinking Water on a 5% Phenyl Column after SPE using ENVI™-18 DSK
CONDITIONS
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
Description
Application
Sample Pre-treatment:
Adjust 1 L drinking water to pH <2 with 6 N HCl. Add 5 mL methanol and mix thoroughly
Legal Information
ENVI is a trademark of Sigma-Aldrich Co. LLC