Abstract
Single fibers containing inorganic anti-microbial agents were investigated by a scanning electron microscope/energy dispersive X-ray microanalyzer (SEM/EDX). In recent years, many types of anti-microbial deodorant products have been commercially available in the field of daily life. In this study, single fibers were targeted because they are likely to be left at crime scenes and/or transferred to a victim as trace evidence. For the reason that the elemental composition of inorganic anti-microbial agents was expected to be different from that of other additives, carbon-coated fiber samples were analyzed by SEM/EDX. As a result, Ag, Ti, P, Zr, etc. were detected, and types of inorganic anti-microbial agents in fiber samples could be estimated. The elemental result and distribution status of anti-microbial agents in fiber could be used as indexes for discrimination, and fiber samples whose infrared spectra were identical could be discriminated.
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