Welcome to the New Restek.com! Take a tour of the new site and feel free to send us your feedback.

Your web browser will no longer be supported by Restek.com as of 30 June 2021.
To avoid any interruption in access or functionality, install a current-generation web browser now. Learn more.

Comparison: Florisil SPE Cleanup of Blank Extract and EPA 8081 Pesticides Extract on Rtx-CLPesticides2

ColumnRtx-CLPesticides2, 30 m, 0.32 mm ID, 0.25 µm (cat.# 11324)
using Rxi guard column 5 m, 0.32 mm ID (cat.# 10039)
with universal “Y” Press-Tight connector (cat.# 20406-261)
Standard/Sample2,4,5,6-Tetrachloro-m-xylene (cat.# 32027)
Decachlorobiphenyl (BZ #209) (cat.# 32029)
Organochlorine pesticide mix AB #2 (cat.# 32292)
Injection
Inj. Vol.:2 µL splitless (hold 0.75 min)
Liner:Premium 4 mm single taper w/wool (cat.# 23303.5)
Inj. Temp.:250 °C
Purge Flow:50 mL/min
Oven
Oven Temp.:110 °C (hold 0.5 min) to 320 °C at 15 °C/min (hold 5 min)
Carrier GasHe, constant flow
Flow Rate:3.5 mL/min
Detectorµ-ECD @ 330 °C
Make-up Gas Flow Rate:50 mL/min
Make-up Gas Type:N2
Data Rate:50 Hz
InstrumentAgilent/HP6890 GC
NotesA mixed standard was prepared in 1 mL hexane (see peak list for nominal concentration of each component). For cleanup, a Florisil tube (cat.# 24034) was first conditioned with 6 mL hexane. The 1 mL standard was then loaded on the tube and eluted with hexane:acetone (90:10), collecting 10 mL of eluent. The eluent was then concentrated down to 1 mL and analyzed.