Abstract
A static headspace gas chromatography coupled mass spectrometry (GC-MS) method was developed and fully validated for the quantitative measurement of acetaldehyde, acetone, methanol, ethanol and acetic acid in the headspace of micro-volumes of blood using n-propanol as an internal standard. The linearity of the method was established over the range 0.2–100 mg/L (R 2 > 0.99) and the limits of detection were 0.1–0.2 mg/L and lower limits quantification 0.5–1 mg/L. Precision and accuracies fell within acceptable limits (20 % for LLOQ and 15 %) for both intra- and inter-day analyses for all compounds except acetaldehyde which had inter-day variability of ≤25 %. The method was applied to analyse blood samples from neonatal patients receiving courses of ethanol excipient containing medications. Baseline levels of acetaldehyde, acetone, methanol and ethanol could be measured in patients before dosing commenced and an increase in levels of some volatiles were observed in several neonates after receiving ethanol-containing medications.
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Acknowledgments
The work described here was funded by the ESNEE project which is conducted under ERA-NET PRIOMEDCHILD. In the UK, this is funded by MRC Grant G1100158 to Dr. Mark A. Turner. The authors acknowledge the contribution of Rosalind Astles with sampling and consent.
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Cordell, R.L., Pandya, H., Hubbard, M. et al. GC-MS analysis of ethanol and other volatile compounds in micro-volume blood samples—quantifying neonatal exposure. Anal Bioanal Chem 405, 4139–4147 (2013). https://doi.org/10.1007/s00216-013-6809-1
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DOI: https://doi.org/10.1007/s00216-013-6809-1