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  • Cadaveric volatile organic compounds released by decaying pig carcasses (Sus domesticus L.) in different biotopes.

Cadaveric volatile organic compounds released by decaying pig carcasses (Sus domesticus L.) in different biotopes.

Forensic science international (2009-05-09)
J Dekeirsschieter, F J Verheggen, M Gohy, F Hubrecht, L Bourguignon, G Lognay, E Haubruge
ZUSAMMENFASSUNG

Forensic entomology uses pig carcasses to surrogate human decomposition and to investigate the entomofaunal colonization. Insects communicate with their environment through the use of chemical mediators, which in the case of necrophagous insects, may consist in the cadaveric volatile organic compounds (VOCs) released by the corpse under decomposition. Previous studies have focused on cadaveric VOCs released from human corpses. Nevertheless, studies on human corpses are restricted for many reasons, including ethics. Forensic entomologists use pig as animal model but very few information are available about the decompositional VOCs released by a decaying pig carcass. We here tested a passive sampling technique, the Radiello diffusive sampler, to monitor the cadaveric VOCs released by decomposing pig carcasses in three biotopes (crop field, forest, urban site). A total of 104 chemical compounds, exclusively produced by the decompositional process, were identified by thermal desorption interfaced with gas chromatography and mass spectrometry (TDS-GC-MS). Ninety, 85 and 57 cadaveric VOCs were identified on pig carcasses laying on the agricultural site, the forest biotope and in the urban site, respectively. The main cadaveric VOCs are acids, cyclic hydrocarbons, oxygenated compounds, sulfur and nitrogen compounds. A better knowledge of the smell of death and their volatile constituents may have many applications in forensic sciences.

MATERIALIEN
Produktnummer
Marke
Produktbeschreibung

radiello Kartuschen-Adsorbenzien, for sampling BTEX and VOCs (CS2 Desorption), matrix SS net (100 mesh, 5.8 mm diam.), activated with activated charcoal (30-50 mesh), pk of 20
radiello Dreieckige Trägerplatte, pk of 20
radiello Diffusionskörper, white, configured for general use, pk of 20
radiello Kartuschen-Adsorbenzien, for sampling Aldehydes, matrix SS net with 2,4-DNPH coated FLORISIL®, pk of 20
radiello Kartuschen-Adsorbenzien, for sampling Ammonia (NH3), matrix microporous PE impregnated with phosphoric acid, pk of 20
radiello Diffusionskörper, blue, configured for sampling light sensitive compounds, pk of 20
radiello Diffusionskörper, yellow, configured for reduced sampling rates, pk of 20
radiello Kartuschen-Adsorbenzien, for sampling BTEX and VOCs (thermal desorption), matrix SS net (3 x 8 μm, 4.8 mm diam.), Carbograph, pk of 20
Supelco
radiello Methylenblau-Kalibrierstandard für H2S (Schwefelwasserstoff), pkg of 100 mL
radiello Freiluft-Schutzvorrichtung, pk of 10
radiello Strichcode-Etiketten, pk of 198
radiello Vertikaler Adapter, threaded for standard use, pk of 20
radiello BTEX/VOC Starter Kit, CS2 Desorption
radiello BTEX/VOC Starter Kit, Thermal Desorption
Supelco
radiello BTEX-Kalibrierkit (Thermische Desorption)
radiello Hydrogen Sulfide Starter Kit
radiello Filtrations-Kit, pk of 20
radiello Anesthetic Gases and Vapor Sampler
radiello Kartuschen-Adsorbenzien, for sampling Anaesthetic Gases/Vapors, matrix SS net with mix of mol sieve and activated charcoal (30-50 mesh), pk of 20
radiello Feld-Thermometer, Includes one standard Radiello vertical adapter (RAD122) for each thermometer, configured for standard use, pk of 3
radiello Leerröhrchen zur Aufbewahrung, glass (with stopper), volume 2.8 mL, pk of 100
radiello Leerröhrchen zur Aufbewahrung, polypropylene (with stopper), volume 12 mL, pk of 100
Supelco
radiello BTEX-Kalibrierkit (CS2 Desorption)
Supelco
radiello Aldehyd-Kalibrierstandard, 50 μg/mL each component in acetonitrile, pkg of 10 mL
radiello Klemmen, suspending Radiello triangular support plate, pk of 20
radiello 1,3-Butadiene Starter Kit, Thermal Desorption, pkg of 1 kit (2 RAD141 adsorbing cartridges and barcode labels, 1 RAD1202 yellow diffusive body, 1 RAD121 triangular support plate, 1 instruction sheet)
radiello Diffusionskörper, permeative, configured for anaesthetic gases and vapors, pk of 20
radiello Feld-Thermometer, Reader, pk of 1
radiello Ersatz-Montagegurte, for use with Radiello Outdoor Shelter, pk of 100