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With the proposed method, the overpressure created inside the vials during sample injection (see details above) allows the withdrawal of a bigger sample volume by the GC. Thus, for the proposed method, 3.5 mL of the gas sample were injected by a CTC CoiPAL autosampler headspace syringe (5 mL‐syringe, filling speed100 μL s −1 , injection speed500 μL s −1 ) to flush a 1 mL sample
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