Arabica coffee beans, green, 2 grams with pre-equilibration of 10 min at 60 °C, the entire process under agitation at 500 rpm
divinylbenzene/carboxen on polydimethylsiloxane, 50/30 μm (57328-U)
headspace, 40 min at 60 °C
5 min
SUPELCOWAX 10, 30 m × 0.25 mm I.D., 0.25 μm (24079)
40 °C (5 min), 4 °C/min to 230 °C, 50 °C/min to 280°C (2 min)
260 °C
MS (Shimadzu GCMS-QP2010) ionization energy 1.5 kV; mass range: 40-400 amu; scan mode, scan interval : 0.5 sec
230 °C, source temp. 200 °C
helium, 34.0 cm/s and 40.3 KPa
splitless 5 min, then split ratio 1:20
0.75 mm i.d.
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