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Computer analysis of ATR-FTIR spectra of paint samples for forensic purposes


Computer analysis of ATR-FTIR spectra of paint samples for forensic purposes

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dc.contributor.author Szafarska, Małgorzata pl
dc.contributor.author Woźniakiewicz, Michał [SAP11019917] pl
dc.contributor.author Pilch, Mariusz [SAP14004545] pl
dc.contributor.author Zięba-Palus, Janina pl
dc.contributor.author Kościelniak, Paweł [SAP11010982] pl
dc.date.accessioned 2014-12-18T11:51:28Z
dc.date.available 2014-12-18T11:51:28Z
dc.date.issued 2009 pl
dc.identifier.issn 0022-2860 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/2347
dc.language eng pl
dc.title Computer analysis of ATR-FTIR spectra of paint samples for forensic purposes pl
dc.type JournalArticle pl
dc.description.physical 504-513 pl
dc.abstract.en A method of subtraction and normalization of IR spectra (MSN-IR) was developed and successfully applied to extract mathematically the pure paint spectrum from the spectrum of paint coat on different bases, both acquired by the Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) technique. The method consists of several stages encompassing several normalization and subtraction processes. The similarity of the spectrum obtained with the reference spectrum was estimated by means of the normalized Manhattan distance. The utility and performance of the method proposed were tested by examination of five different paints sprayed on plastic (polyester) foil and on fabric materials (cotton). It was found that the numerical algorithm applied is able – in contrast to other mathematical approaches conventionally used for the same aim – to reconstruct a pure paint IR spectrum effectively without a loss of chemical information provided. The approach allows the physical separation of a paint from a base to be avoided, hence a time and work-load of analysis to be considerably reduced. The results obtained prove that the method can be considered as a useful tool which can be applied to forensic purposes. pl
dc.subject.en ATR-FTIR pl
dc.subject.en paints pl
dc.subject.en forensic investigations pl
dc.description.volume 924-926 pl
dc.identifier.doi 10.1016/j.molstruc.2008.11.048 pl
dc.identifier.eissn 1872-8014 pl
dc.title.journal Journal of Molecular Structure pl
dc.language.container eng pl
dc.affiliation Wydział Chemii : Zakład Chemii Analitycznej pl
dc.subtype Article pl

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