Farias, Robson Fernandes deLima, Leomir Aires Silva de2014-12-172014-07-172014-12-172013-07-23LIMA, Leomir Aires Silva de. Estudo da potencialidade da espectroscopia de infravermelho próximo na análise de cabelo utilizando ferramentas quimiométricas para diferenciar fumantes de não fumantes. 2013. 44 f. Dissertação (Mestrado em Físico-Química; Química) - Universidade Federal do Rio Grande do Norte, Natal, 2013.https://repositorio.ufrn.br/jspui/handle/123456789/17741This paper investigates the potential of near infrared spectroscopy (NIR) for forensic analysis of human hair samples in order to differentiate smokers from nonsmokers, using chemometric modeling as an analytical tool. We obtained a total of 19 hair samples, 9 smokers and 10 nonsmokers varying gender, hair color, age and duration of smoking, all collected directly from the head of the same great Natal-RN. From the NIR spectra obtained without any pretreatment of the samples was performed an exploratory multivariate chemical data by applying spectral pretreatments followed by principal component analysis (PCA). After chemometric modeling of the data was achieved without any experimental data beyond the NIR spectra, differentiate smokers from nonsmokers, by demonstrating the significant influence of tabacco on the chemical composition of hair as well as the potential of the methodology in forensic identificationapplication/pdfAcesso AbertoEspectroscopia NIR. Cabelo. Análise Forense. PCA. Nicotina.NIR spectroscopy. Hair. Forensic analysis. PCA. NicotinemasterThesisCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA