[Biochemical skin sweat-sebum profile in individual identification].

INTRODUCTION

Sweat-sebum substance released by an individual, is left on the surface of different objects by direct contact (touch), which takes place in the well known mechanism of finger-print formation. Interesting from the crime detection point of view seems to be the determination of qualitative and quantitative changes in sweat-sebum biochemical profile left on objects, which may contribute to the determination of precise biochemical profiles in relation to individual identification.

MATERIAL AND METHODS

Five different hand profiles of sweat-sebum were determined using gas chromatography with mass spectrometry obtaining referral material, then obtained profiles were compared to the profile left on a rough plastic surface by one individual belonging to the referral group.

RESULTS

Obtained results indicate the possible application of the procedure for correlation of sweat-sebum skin profiles for identification purposes in crime detection, as indirect prove. Undoubtedly, although there is no possibility to show the uniqueness of particular profiles, like it is in a genetic examination, the short time needed to perform analysis (approximately 40 min) is very significant in the presented procedure, which may be a complementation of genetic methods in case were short time of perpetrator typing is a crucial step.

CONCLUSIONS

Presented procedure may be helpful in preliminary individual identification in case were there is no possibility to collect finger-print profiles from the surface (inappropriate surface structure, smear traces).