Determination of nitrate in blood by gas chromatography and gas chromatography-mass spectrometry

Shigetoshi Kage, Keiko Kudo, Noriaki Ikeda

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


We devised a sensitive and simple method for determining nitrate in whole blood, using an extractive alkylation technique. Nitrate in whole blood was reduced to nitrite by hydrazine sulfate in the presence of Cu2+ and Zn2+ as catalysts, and alkylated with pentafluorobenzyl bromide using tetradecyldimethylbenzylammonium chloride as the phase-transfer catalyst. The obtained derivative was analyzed qualitatively by gas chromatography-mass spectrometry and quantitatively by gas chromatography with electron-capture detection. The detection limit of nitrate in whole blood was 0.01 mM. The calibration curve was linear over the concentration range from 0.02 to 1.0 mM for nitrate in whole blood. The accuracy and precision of the method were evaluated and the relative standard deviations were found to be within 10%. Using this method, the blood nitrate levels of two victims who committed suicide by inhaling automobile exhaust gas were determined. Copyright (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)363-368
Number of pages6
JournalJournal of Chromatography B: Biomedical Sciences and Applications
Issue number2
Publication statusPublished - Jun 9 2000

All Science Journal Classification (ASJC) codes

  • Chemistry(all)


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