SPE (Solid Phase Extraction)
drinking water spiked with pesticides
Supelclean ENVI-18, 500 mg/6 mL (57064)
2 x 6 mL hexane:ethyl ether (1:1); 6 mL methanol; 6 mL DI water
250 mL water sample at 10 mL/min
10 min with vacuum
2 x 15 mL hexane:ethyl ether (1:1)
concentrate to 2 mL with nitrogen stream
5% Phenyl Polysiloxane, 30 m × 0.25 mm I.D., 0.25 μm (Supelco equivalent, Equity-5, 28089-U)
150 °C (2 min), 10 °C/min to 275 °C
ECD, 310 °C
helium
1 μL
ENVI is a trademark of Sigma-Aldrich Co. LLC
Supelclean is a trademark of Sigma-Aldrich Co. LLC