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. 2024 May 10;11:1403541. doi: 10.3389/fnut.2024.1403541

Table 2.

Operating conditions of GC–MS/MS.

Chromatographic parameters
Liner Ultra Inert Liner of 78.5 mm, ID 4 mm, OD 6.47 mm, volume 900 μL and single taper (Agilent technologies Little Falls, DE, United States)
Column 1 and Column 2 Ultra Inert 15 m x 0.25 mm, 0.25 μm film thickness (Agilent J&W. Scientific, Folsom, United States)
Carrier gas and flow mode Helium carrier gas (99.999%);
Flow in Colum 1: 1.0 mL/min
Flow in Colum 2: 1.2 mL/min
Injection mode, temperature, and volume Splitless mode, 280°C, 1 μL, hold time 3.0 min
Oven temperature 60°C (held 1.0 min); 170°C (rate 40°C/min, held 3.75 min) and 310°C (rate 10°C/min)
Blackflush 320°C (held 5.0 min)
Run time 18 min + 5 min blackflush
Mass spectrometer parameters
Detector MS operating in electron ionization mode: 70 eV
Temperature of MS1 and MS2: 150°C
Source temperature: 280°C
Transfer line: 290°C
Acquisition in Multiple Reaction Monitoring mode (MRM),
Resolution MS1 = 1.5
Resolution MS2 = 1.5