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1,4-Dioxane in Drinking Water (5 pg On-Column) on Rxi-624Sil MS (Extracted Ion Chromatogram)
Rxi-624Sil MS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 13868)
using Rxi guard column 5 m, 0.25 mm ID (cat.# 10029)
with Universal Press-Tight connectors (cat.# 20429)
Tetrahydrofuran-d8 (cat.# 30112)
1,4-Dioxane-d8 (cat.# 30614)
1,4-Dioxane (cat.# 30287)
0.5 pg/µL (IS/SS 10 pg/µL) in extract
10 µL splitless (hold 1 min)
Premium 4 mm single taper w/wool (cat.# 23303.5)
35 °C (hold 1 min) to 120 °C at 12 °C/min (hold 1 min)
He, constant flow
30.556 cm/sec @ 35 °C
Start Time (min)
Transfer Line Temp.:
Solvent Delay Time:
Agilent 7890A GC & 5975C MSD
A drinking water sample fortified with 1,4-dioxane and surrogate standard was extracted using a Resprep activated coconut charcoal SPE cartridge (cat.# 26032) following EPA Method 522 protocol. Immediately after solvent elution, the extract was spiked with internal standard and brought up to final volume. The extract was then dried with anhydrous magnesium sulfate (this was a deviation from the method, which calls for sodium sulfate).
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