The characterization of black inkjet computer printer inks using pyrolysis gas chromatography-mass spectrometry (Py-GC-MS), high performance liquid chromatography (HPLC), thin layer chromatography (TLC) and attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR)
Item
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Title
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The characterization of black inkjet computer printer inks using pyrolysis gas chromatography-mass spectrometry (Py-GC-MS), high performance liquid chromatography (HPLC), thin layer chromatography (TLC) and attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR)
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Identifier
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d_2009_2013:530dcda411fc:11263
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identifier
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11454
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Creator
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Boileau, Michelle Margaret,
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Contributor
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Thomas A. Kubic
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Date
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2012
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Language
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English
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Publisher
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City University of New York.
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Subject
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Criminology | Analytical chemistry | Characterization | Chromatography | Forensic | Inkjet | Science | Spectroscopy
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Abstract
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Documents are prevalent in every aspect of daily life and hardly a day passes without using some sort of document. Problems arise, however, when the authenticity of these documents is raised. Forensic science has long been involved in the investigation and examination of suspect documents. One of the steps in the examination of questioned documents is for the examiner to analyze the type of material used to create the document. This could involve the analysis of the paper substrate and/or the medium used to create the written word, namely pen ink, typewriter ink or toner in photocopied documents.;This is the age of the computer, and as a result new challenges are facing the questioned document examiner. With more and more individuals using computers to produce their documents, and with the advancement of more sophisticated computer and printer systems, it has become harder for the analyst to distinguish and possibly individualize a suspected document based on physical appearance alone. Once again, the forensic scientist must focus on the material used to produce the document, namely the computer printer ink. An examination of these ink samples may allow for the differentiation between the many manufacturers, as well as within the products of a specific manufacturer. In time, it may also be possible to date a computer printer generated document based on the drying and decomposition rates of the different computer printer ink components. Currently, this is unfortunately still just a theory. There have been few studies on the different types of computer printer inks and how, or if, they differ from each other. The identification of the various black inkjet computer printer ink manufacturers, and the creation of a classification procedure, is the first step in the analysis of a questioned inkjet produced document.;The goal of this study was to produce a detailed document on the forensic identification of black inkjet computer printer inks, and this research succeeded in its goal. The analysis of the black inkjet computer printer ink samples by Thin Layer Chromatography (TLC), High Performance Liquid Chromatography (HPLC), Pyrolysis Gas Chromatography-Mass Spectrometry (Py-GC-MS) and Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR FT-IR) analytical methods resulted in the production of data that led to the establishment of a classification procedure that could assist the forensic scientist in the examination, identification and discrimination of the different inkjet computer generated documents they receive.
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Type
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dissertation
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Source
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2009_2013.csv
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degree
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Ph.D.
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Program
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Criminal Justice
