Prediction of measurement uncertainty in isotope dilution gas chromatography/mass spectrometry

Analysis of [2H7]methionine, [2H4]methionine, methionine, [2H4]homocysteine and homocysteine in plasma by gas chromatography–mass spectrometry to follow the fate of administered [2H7]methionine

“…Fig. 2 shows the chemical ionization (CI) mass spectra of the derivatives of methionine, Table 1 by the equations described previously [19].…”

Simultaneous determination of serine enantiomers in plasma using Mosher's reagent and stable isotope dilution gas chromatography‐mass spectrometry

“…DL ‐[ 2 H 3 ]Serine possessed sufficiently high isotopic purity and the contributions to m / z 552 peak were minor. Peak intensities were corrected using the values in Table 1 by the equations described previously 38…”

Simultaneous determination of selenomethionine enantiomers in biological fluids by stable isotope dilution gas chromatography–mass spectrometry

“…In isotope dilution GC-MS, the presence of non-labeled molecule in the internal standard and naturally occurring isotope in the analyte arises the interference between the measured peak area of the analyte and that of its isotopic variant [26]. Fig.…”