Table 1: Main GC analytical parameters used for calibration and analyses of hydrothermal fluid samples. Each group of compounds (n-alkanes, BTEXs, PAHs, and n-fatty acids) was analysed using separate twisters.

n-AlkanesBTEX & PAHsn-Fatty acids

Oven
Initial (°C)404040
Initial (min)111
ramp40 to 320°C at 12°C/min40 to 320°C at 12°C/min40 to 320°C at 20°C/min
Final (°C)320320320
Final (min)222
Injector
(°C)250250325