Problems of Forensic Sciences 2001 Vol. 46 (XLVI) 249-254
A POPULATION STUDY OF FIBRES FOUND ON BUS SEATS IN CRACOW
Jolanta WĄS-GUBAŁA, Andrzej CHOCHÓŁ
Institute of Forensic Research, Cracow, Poland
Streszczenie
The presented examination gives a further estimation of which fibre traces are common and provides background data, which are essential in fibre evidence evaluation. Since buses are a very popular means of transport in Cracow agglomeration, a study of different fibres on bus seats surfaces seems to be significant to the total population of recovered fibres. Additionally, at present, Polish textile market is under transition and the obtainable results can be compared with these received for more stabilised (e.g. German, Swiss) markets. Fibres were collected, with an adhesive tape, from seats of popular public bus lines in Cracow and they were classified according to their type and colour. More than 4000 recovered fibres were analysed using transmitted and polarised light microscopy. The biggest amount of the identified fibres was natural. The most popular colour was colourless (37%), blue (26%) and green (13%). The most common fibre/colour combination in the fibres found on bus seats was colourless cotton (21%) and blue cotton (17%). The examination confirmed that the synthetic fibres of an unusual colour collected as evidence could be considered highly significant.
Słowa kluczowe
Fibres; Bus seats; Fibres frequency; Fibres evidence.