Keywords: ftir, ftir-pas, ftir-atr, ftir- microspectrometry, ftir-imaging introduction infrared spectroscopy is a standard method of analytical pharmacy and chemistry which provides the images of vibration of atoms of compound. Apr 10th, 4:15 pm apr 10th, 5:30 pm differentiation of human, animal and synthetic hair by atr ftir spectroscopy hartwell hall 125 hair fibers are ubiquitous to every environment and are the most commonly found form of trace evidence at crime scenes. Of hair as human with a high degree of confidence and is of ample importance to the field of forensic science the method can be conducted without the need of a specialist, is non-destructive, is extremely quick and requires no sample preparation atr ftir spectroscopy, chemometrics, hair created date. Ftir is one of (heise et al, 2001) the most widely used methods to identify the ftir spectroscopic measurements have been chemical constituents and elucidate the compounds performed also on human hair (dubief, 1992 functional groups and has been used as a method to strasburger and breuer, 1985) and proved practical identify medicines in. Forensic differentiation of human and animal hair via atr ft-ir spectroscopy and chemometrics the difference between a human hair and an animal hair may not be obvious to the naked eye, until it is.
Abstract in infrared spectroscopy human hair has normally been studied using attenuated total reflectance or diffuse reflectance infrared fourier transform spectroscopy, for which the sample preparation methods can lead to problems of reproducibility. This study demonstrates that handheld ftir spectroscopy coupled with chemometrics is a suitable method for quantitation of trans fat this combination is promising for in situ analysis of trans fat in edible oils. For more than 10 years, ft-ir spectroscopy combined with chemometrics has been used as a tool to discriminate between trees that differ in disease susceptibility before and after pathogen infection the elm ( ulmus spp)- o novo-ulmi pathosystem (martin et al, 2005a , b martín et al, 2007 , 2008 ) is the most studied system.
Human hair profiling is an integral part of a forensic investigation but it is one of the most technically difficult subjects in forensic science this thesis describes the research and development of a novel approach for the rapid identification of unknown human and other related keratin fibres. Ftir spectroscopy is a common technique for cancer diagnosis applied tissue samples are heterogeneous and may be damaged in preparation procedures easier sampling, more available samples and also easier process with assured results would be interesting whole blood samples include all of these qualifications and our hypothesis was the bio-molecular changes in blood which manifest themselves. I a forensic investigation of single human hair fibres using ftir-atr spectroscopy and chemometrics a thesis submitted as partial fulfilment of the requirements. Multivariate profiling of metabolites in human disease method evaluation and application to prostate cancer chemometrics, design of experiments, multivariate data analysis, prostate cancer, ftir fourier transform infrared spectroscopy. Fourier transform infrared (ft-ir) spectroscopy and chemometr ics techniques were used to discriminate five closely related salmonella enterica serotype enteritidis phage types 1, 1b, 4b, 6, and 6a.
The objective of this study was to develop ftir spectroscopy combined with chemometrics for authentication of extra virgin olive oil (evoo) from grape seed oil (gso), soybean oil (so), and walnut oil (wo) ftir spectra of evoo and that mixed with gso, so and wo were scanned at mid infrared region. For analyzing unknown biological stains in a forensic setting, fourier transform infrared spectroscopy has many advantages it can provide confirmatory identification of the fluid type, can estimate the stain’s age, discriminate species, and can be used on samples found on various substrates and exposed to various environmental conditions. Forensic differentiation of human and animal hair via atr ft-ir spectroscopy and chemometrics the difference between a human hair and an animal hair may not be obvious to the naked eye, until it is scrutinized underneath the microscope or by other means.
Cary 670 ftir spectrometer the cary 670 ftir is only available in conjunction with the cary 610 or cary 620 ftir microscope systems the agilent cary 670 ftir air-bearing spectrometer provides the highest level of performance in the industry. Emily c lennert category chemistry keywords paint, primer, automotive primer, ftir, fourier transform infrared spectroscopy, chemometrics, synchrotron ftir. Spectroscopy welcomes manuscripts that describe techniques and applications of all forms of spectroscopy and that are of immediate interest to users in industry, academia, and government we cover molecular spectroscopy techniques, atomic spectroscopy techniques, laser-based spectroscopies, and mass spectrometry. Spectroscopy, human hair has been normally studied by using diffuse reflectance infrared fourier transform (drift) or attenuated total (ftir) spectroscopy are investigated with single human hair fibers by length profiling of a longer hair fiber was performed to study the weathering of the hair.
In this preliminary study, atr ft-ir spectroscopy combined with chemometrics was shown to be a powerful tool for species’ blood differentiation ir spectra from human, cat, and dog blood were used as a training dataset. 63 chemometrics and 2d correlation spectroscopy 86 825 human hair keratin 134 832 depth-profiling photoacoustic spectroscopy 158 833 dynamic fluorescence spectroscopy 165 834 summary 166 9 applications of two-dimensional correlation spectroscopy to basic molecules 169. The human hair samples that was obtained from different age group (20-30, 31-40, 41-50, 60) but same gender and race undergoes ftir spectroscopy to detect the amount of amino acid (protein) the data was then was analyze using chemometrics. 1 introduction a human hair is approximately 50 - 100 μm in diameter and consists of a barrier cuticle layer (outer 5 μm), a middle cortex layer (40 - 95 μm), and, when present, an inner medulla (5 - 10 μm.