Examination of paint smears on clothing by X‐ray fluorescence spectrometry

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Abstract
Direct X‐ray fluorescence analysis of pieces of cloth cut from clothing on which there is a suspected paint smear has been found to be a useful forensic technique for comparing a reference paint sample with the smeared substance. Even though the X‐ray method does not compare all the constituents of the paint, it may often be sufficient to distinguish rapidly between two suspect paint sources, and can therefore be a valuable method in paint transfer cases such as hit and run accidents. A feature of the method is that elements present in the cloth, such as sulphur in wool and titanium in some synthetic fibres, can be used as internal standards.

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