US EPA Method 8270: GC Analysis of Semivolatiles on Equity-5

column

Equity-5, 30 m × 0.25 mm I.D., 0.5 μm (28092-U)

oven

40 °C (2 min), 50 °C/min to 100 °C, 10 °C/min to 200 °C, 30 °C/min to 325 °C (7.5 min)

inj. temp.

280 °C

detector

MSD, scan range 45-450 amu, 325 °C

carrier gas

pressure programmed, 20 psi (0.0 min), ramp to 80 psi (0.0 min), ramp to 16.5 psi (3 min),ramp to 25 psi (hold for remainder of run)

injection

1 μL, splitless (0.61 min)

liner

4 mm I.D., single taper

sample

50 ng on-column of a primary analyte list consisting of a 74 component semivolatile standard, 6 internal standards, and 8 surrogates