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Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli

Ink analysis is an important forensic procedure that can reveal useful information about questioned documents by comparison of the inks used to produce the questioned documents. In such cases, it is necessary to apply chemical methods that normally do not cause partial destruction of the examination...

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Main Author: Ramli, Zuriati
Format: Thesis
Language:English
Published: 2007
Online Access:https://ir.uitm.edu.my/id/eprint/101718/1/101718.pdf
https://ir.uitm.edu.my/id/eprint/101718/
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spelling my.uitm.ir.1017182024-09-12T16:16:55Z https://ir.uitm.edu.my/id/eprint/101718/ Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli Ramli, Zuriati Ink analysis is an important forensic procedure that can reveal useful information about questioned documents by comparison of the inks used to produce the questioned documents. In such cases, it is necessary to apply chemical methods that normally do not cause partial destruction of the examination materials. The aim of this work is to evaluate the possibility of discrimination between stamp pad inks by the use of spectroscopic methods; FTIR spectroscopy, UV-Vis spectroscopy and VSC 5000. Nine samples of different brands and colors of stamp pad inks were examined. Artline and Unicorn red inks and Colop and Artline blue inks cannot be differentiated based on the absorption of visible radiation. It could be due to the two brands use similar chemical compounds and they probably are of similar chemical compounds or compositions. However, all brands of black inks can be differentiated. It could be due to the inks may not have similar compositions. The IR spectra of all inks are similar although they are from different colors and brands probably due to the inks are comprised of chemical compounds having similar functional groups. The three brands of all the three colors, however, can be differentiated based on colorimetry measured on VSC 5000. 2007 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/101718/1/101718.pdf Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli. (2007) Degree thesis, thesis, Universiti Teknologi MARA (UiTM). <http://terminalib.uitm.edu.my/101718.pdf>
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
description Ink analysis is an important forensic procedure that can reveal useful information about questioned documents by comparison of the inks used to produce the questioned documents. In such cases, it is necessary to apply chemical methods that normally do not cause partial destruction of the examination materials. The aim of this work is to evaluate the possibility of discrimination between stamp pad inks by the use of spectroscopic methods; FTIR spectroscopy, UV-Vis spectroscopy and VSC 5000. Nine samples of different brands and colors of stamp pad inks were examined. Artline and Unicorn red inks and Colop and Artline blue inks cannot be differentiated based on the absorption of visible radiation. It could be due to the two brands use similar chemical compounds and they probably are of similar chemical compounds or compositions. However, all brands of black inks can be differentiated. It could be due to the inks may not have similar compositions. The IR spectra of all inks are similar although they are from different colors and brands probably due to the inks are comprised of chemical compounds having similar functional groups. The three brands of all the three colors, however, can be differentiated based on colorimetry measured on VSC 5000.
format Thesis
author Ramli, Zuriati
spellingShingle Ramli, Zuriati
Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli
author_facet Ramli, Zuriati
author_sort Ramli, Zuriati
title Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli
title_short Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli
title_full Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli
title_fullStr Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli
title_full_unstemmed Discrimination of stamp pad inks using spectroscopic methods / Zuriati Ramli
title_sort discrimination of stamp pad inks using spectroscopic methods / zuriati ramli
publishDate 2007
url https://ir.uitm.edu.my/id/eprint/101718/1/101718.pdf
https://ir.uitm.edu.my/id/eprint/101718/
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score 13.211869

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