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Published:
Journal of Analytical Toxicology,
ISSN 0146-4760,
Volume 24,
Number 7, October,
pp. 642-647
Here is where the title stuff goes
Fatal
Strychnine Poisoning: Application of Gas Chromatography and Tandem Mass Spectrometry
Thomas
G. Rosano1, Jeffrey D. Hubbard2, John M. Meola1, and Thomas A. Swift1
1Department of Pathology and Laboratory Medicine, Albany Medical Center, 43
New Scotland Avenue, Albany, New York 12208 and 2Bender-St. Peters Laboratory,
Albany, New York 12208
The history
and toxicological findings in a case of suicidal fatal strychnine poisoning
are presented along with a description of the analytical methods. Detection
and quantitation of strychnine in body fluids and tissues was performed by gas
chromatography (GC) with nitrogen-phosphorus detection, using organic extraction
and calibration by a standard addition method. Strychnine concentrations in
subclavian blood (1.82 mg/mL), inferior vena cava blood (3.32 mg/mL), urine
(3.35 mg/mL), bile (11.4 mg/mL), liver (98.6 mg/kg), lung (12.3 mg/kg), spleen
(11.8 mg/kg), brain (2.42 mg/kg), and skeletal muscle (2.32 mg/kg) were determined.
Confirmation of strychnine in blood and tissue was performed by GC with detection
by tandem ion-trap mass spectrometry (MS). GCMSMS analysis, employing
electron ionization followed by unit mass resolution and collision-induced dissociation
of strychnine, resulted in confirmatory ions with mass-to-charge ratios of 334
(parent ion), 319, 306, 277, 261, 246, 233, and 220. Additional confirmation
was provided by GCMSMSMS analysis of each confirmatory ion,
revealing an ion fragmentation pathway consistent with the molecular structure
of strychnine. The case demonstrates body tissue and fluid distribution of strychnine
in a fatal poisoning and the application of tandem MS in medical examiner casework.
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