Authors: Yoko Hieda Yoshio Tsujino Yuying Xue Koji Takayama Junko Fujihara Kojiro Kimura Satoshi Dekio
Publish Date: 2003/11/27
Volume: 118, Issue: 1, Pages: 41-46
Abstract
To evaluate the usefulness of skin analysis for the forensic examination of cases involving postmortem dermal exposure to kerosene and/or fire an experimental study using rats was performed Rats received dermal exposure to kerosene before or after death and the effect of fire was determined by burning an area of exposed skin after death Kerosene concentrations in skin and blood were determined by gas chromatographymass spectrometry and microscopic observation was performed for skin samples No differences were observed in skin kerosene levels between antemortem and postmortem exposure Kerosene concentrations in mildly burned skin where the stratum corneum SC was retained were approximately 84 compared to those in nonburned exposed skin whereas concentrations in severely burned skin where the SC was almost completely burned off were 28 of nonburned skin Even in nonexposed control skin 14 of the original kerosene concentrations could be detected which was considered to be caused by contamination during the experimental protocol combined with kerosene’s property of a high affinity for the SC These results suggest that 1 skin analysis is useful in estimating the type of petroleum product involved in crimes or accidents even for postmortem exposure 2 whether the SC is retained or not primarily determined the kerosene levels in burned skin and 3 attention must be paid to evaluate the results obtained from skin samples in the light of the circumstances surrounding the case
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