Determination of azide, iodide, nitrite, nitrate, cyanide and thiocyanate by GC/MS

Shigetoshi Kage, Keiko Kudo, Noriaki Ikeda

Research output: Contribution to journalArticlepeer-review


We devised a sensitive and simple method to determine azide, iodide, nitrite, nitrate, cyanide and thiocyanate, using an extractive alkylation technique and gas chromatography/mass spectrometry (GC/MS). Nitrate was reduced to nitrite by hydrazine sulfate prior to alkylation. Their anions were alkylated with pentafluorobenzylbromide, with tetradecyldimethylbenzyl-ammonium chloride as the counter-ion in an alkaline solution. GC/MS was carried out in the positive ion electron ionization (EI) mode and the negative ion chemical ionization (CI) mode with isobutane as reagent gas. The calibration curves were liner by the CI mode in the concentration range from 0.01 to 1.00 μmol/ml.

Original languageEnglish
Pages (from-to)124-125
Number of pages2
JournalJapanese Journal of Forensic Toxicology
Issue number2
Publication statusPublished - 1999

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Toxicology


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