Use of portable X-ray fluorescence to discriminate brands of nail polishes: a potential forensic tool

Journal of the Brazilian Chemical Society

Gustavo G. Shimamoto¹  Juliana Terra¹  Maria Izabel M. S. Bueno¹ 

[1] ,University of Campinas Institute of Chemistry Department of Analytical ChemistryCampinas SP ,Brazil

关键词: X-ray fluorescence;    portable XRF device;    forensic chemistry;    nail polish;   

DOI  :  10.5935/0103-5053.20130093

来源: SciELO

【 摘 要 】

In forensic analysis, a small quantity of a particular material (hairs, fibers, soils, glasses, paints, among others) can be important to elucidate the sequence of events in a crime scene or to establish the relationship among subjects and facts. There are several examples of cosmetics used as forensic evidences, such as lipsticks and nail polishes. The composition of nail polishes varies according to brand, color and purpose of the product. In this work, the separation of Brazilian nail polishes according to their brand was evaluated using a portable energy dispersive X-ray fluorescence spectrometer (EDXRF) and principal component analysis (PCA). The nonsupervised classification of five brands indicates that the proposed methodology may be a quick, low cost and green alternative to discriminate brands and other characteristics related to a nail polish sample, as possible evidence in crime scenes.

【 授权许可】

CC BY   
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