Abstract：
:The main challenge for the identification and differentiation of lipsticks for forensic purposes is the fact that they have a similar chemical composition - in particular, samples of the same hue. The objective of the presented research was to solve this problem using a nondestructive analytical technique - attenuated total reflection spectroscopy (ATR). 38 red lipsticks produced by 20 different manufacturers were examined in optimized experimental conditions. To facilitate discrimination and provide more extensive analyses of the obtained data, two chemometric techniques: principal component analysis and cluster analysis were used. Ultimately, nine groups of investigated lipstick samples with comparable chemical compositions were differentiated. Moreover, lipstick smears on six different interfering surfaces were analyzed and spectral subtraction was performed in order to identify individual samples. The established approach succeeded in identifying the index number and the manufacturer of the samples by using an in-lab built ATR spectra library. The developed method demonstrates a great potential for the differentiation and identification of red lipsticks with a very similar hue. It also seems to have good prospects for future application in forensic science investigations.
journal_name
Forensic Sci Intjournal_title
Forensic science internationalauthors
Gładysz M,Król M,Kościelniak Pdoi
10.1016/j.forsciint.2017.09.019subject
Has Abstractpub_date
2017-11-01 00:00:00pages
130-138eissn
0379-0738issn
1872-6283pii
S0379-0738(17)30399-7journal_volume
280pub_type
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pub_type： 杂志文章
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