The detection of some non-drug poisons in simulated stomach contents by diffusion into various colour reagents |
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| Authors: | H M Stevens |
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| Institution: | 1. National Institute of Legal Medicine and Forensic Sciences, Forensic Chemistry and Toxicology Service, Portugal;2. CENCIFOR – Forensic Sciences Centre, Coimbra, Portugal;3. Laboratory of Pharmacology & Experimental Therapeutics, IBILI, Faculty of Medicine, University of Coimbra, Coimbra, Portugal;4. Faculty of Medicine, University of Coimbra, Coimbra, Portugal;5. Faculty of Medicine, University of Porto, Porto, Portugal;1. Chemistry Department, Payame Noor University, Tehran 19395-3697, Iran;2. Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;3. Department of Anatomical Sciences, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran;4. Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran;1. Forensic Toxicology Laboratory Supervisor, San Diego, CA, United States;2. Forensic Toxicologist, San Diego, CA, United States;3. Forensic Toxicology Laboratory Manager, San Diego, CA, United States |
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| Abstract: | Using oxtail soup as a simulated typical stomach contents, the detection of 32 non-drug poisons which had been individually added to the soup was achieved by the diffusion of the poisons either directly into a colour reagent, or indirectly by producing a detectable vapour by chemical action on the added poison. The diffusion was carried out at ambient temperature or at 100°C, using Cavett's micro-diffusion flasks, and included screening procedures for certain alcohols, aldehydes, ketones, ammonia, aromatic amines, benzene and homologues, cyanide, ethylene glycol, phenols and cresols, nitrobenzene and nitrophenol, trichloro-compounds, sulphur anions and sulphur dioxide, and volatile oxidative anions (chlorate, nitrate and nitrite). No previous treatment of the biological medium (e.g. maceration, extraction or dialysis) was necessary, and the minimum detectable level of each poison varied from 1–1–5 μl (benzene and homologues) to 50 mg (potassium bromate) per 5 ml aliquot of soup used for screening |
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