The limits of detection (LODs) and limits of quantification (LOQs)
for each analyte were calculated followed the method described in
Slezakova et al. [29] and Frenich et al. [24] and were calculated as the
concentrations at which the signal-to-noise ratios were 3 and 10, respectively.
The LODs and LOQs for the GC–MS and GC–MS/MS analyses
were 0.1–0.8 ng/mL and 0.3–3.5 ng/mL for GC–MS and 0.01–
0.15 ng/mL and 0.03–1.5 ng/mL for GC–MS/MS.