Optimization and Validation of Thermal Desorption Gas Chromatography-Mass Spectrometry for the Determination of Polycyclic Aromatic Hydrocarbons in Ambient Air

Table 2

Timed events and oven program used in direct injector mode.

Timed event			Oven program
Event	Flow (mL·min^−1)	Time (min)	Ramp	Rate (°C·min^−1)	Temperature (°C)	Hold (min)
Split	0	−0.51	Initial	0	45	1
Split	50	1	1	20	200	0
Split	20	5	2	4	320	5