View Actual EPA Method 8081A (PDF File)

TABLE 5GC OPERATING CONDITIONS FOR ORGANOCHLORINE COMPOUNDSSINGLE-COLUMN ANALYSIS USING WIDE-BORE COLUMNSColumn 1 - 30 m x 0.53 mm ID fused silica capillary column chemically bonded with 35 percentphenyl methylpolysiloxane (DB-608, SPB-608, RTx-35, or equivalent), 0.5 µm or 0.83 µm filmthickness.Column 2 - 30 m x 0.53 mm ID fused silica capillary column chemically bonded with 50 percentphenyl methylpolysiloxane (DB-1701, or equivalent), 1.0 µm film thickness.Both Column 1 and Column 2 use the same GC operating conditions.Carrier gasCarrier gas flow rateMakeup gasMakeup gas flow rateInjector temperatureDetector temperatureInitial temperatureTemperature programFinal temperatureHelium5-7 mL/minuteargon/methane (P-5 or P-10) or nitrogen30 mL/min250EC290EC150EC, hold 0.5 minute150EC to 270EC at 5EC/min270EC, hold 10 minColumn 3 - 30 m x 0.53 mm ID fused silica capillary column chemically bonded with SE-54 (DB-5, SPB-5, RTx-5, or equivalent), 1.5 µm film thickness.Carrier gasCarrier gas flow rateMakeup gasMakeup gas flow rateInjector temperatureDetector temperatureInitial temperatureTemperature programFinal temperatureHelium6 mL/minuteargon/methane (P-5 or P-10) or nitrogen30 mL/min205EC290EC140EC, hold 2 min140EC to 240EC at 10EC/min, hold 5 minutesat 240EC, 240EC to 265EC at 5EC/min265EC, hold 18 minCD-ROM 8081A - 29 Revision 1December 1996