Parameter

Supelclean Sulfoxide SPE Cartridges

Florisil SPE Cartridges

Eluting solvent

1:1 (v/v) n-hexane:acetone

1:1 (v/v) n-hexane:acetone

Flow rate

2 mL/min

1 mL/min

Load volume

3 mL

3 mL

Table 3: Optimum conditions used in the SPE extraction of PCB congeners