Sensitive determination of acetonitrile and propionitrile in human whole blood by headspace capillary gas chromatography with cryogenic oven trapping

Rina Kaneko, Rena Fukui, Kanako Watanabe, Yukari Hirata, Makoto Hamajima, Akira Ishii

Research output: Contribution to journalArticle

Abstract

We have developed a simple and sensitive method for determining acetonitrile and propionitrile in human whole blood using capillary gas chromatography (GC) with cryogenic oven trapping. After heating 0.5 ml of a whole blood sample containing both nitriles and 0.5 ml of distilled water in a 7-ml vial at 75°C for 15 min, 5 ml of the headspace vapor was drawn into a 10-ml syringe and injected to GC with a flame thermionic detector. A sharp peak was obtained for acetonitrile at -10°C of the initial oven temperature. The extraction efficiencies for acetonitrile and propionitrile were 0.27 and 0.40%, respectively. For quantitation of acetonitrile, propionitrile was used as internal standard, and vise versa. The calibration curves for both compounds gave good linearity in the range of 0.2-6 μg/ml whole blood. The detection limits (signal to noise ratio = 3) were 0.05 μg/ml for acetonitrile and 0.01 μg/ml for propionitrile. The coefficients of intra-day variations were 1.0% at 0.4 μg/ml and 1.7% at 2 μg/ml for acetonitrile; 7.1 % at 0.4 μg/ml and 1.0% at 2 μg/ml for propionitrile. This method can be applicable for determining these nitriles in whole blood samples in acute and chronic intoxication cases.

Original languageEnglish
Pages (from-to)37-40
Number of pages4
JournalJapanese Journal of Forensic Toxicology
Volume23
Issue number1
Publication statusPublished - 22-04-2005

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Toxicology

Fingerprint Dive into the research topics of 'Sensitive determination of acetonitrile and propionitrile in human whole blood by headspace capillary gas chromatography with cryogenic oven trapping'. Together they form a unique fingerprint.

  • Cite this