Table 1 Target compound and internal standards GC-MS and analytical parameters; chemical formulas, the chromatographic retention times, the mass spectrometric multiple reaction monitoring (MRM) ion transitions, external standard calibration linearity, the limits of detection (LOD) and quantification (LOQ) and percentage recovery of the analyte

Compound

Chemical formula

Retention time (min)

MRM transition

Linearity (R ² ) ^a

LOD (ng L ⁻¹ )

LOQ (ng L ⁻¹ )

Recovery (%)