Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy
Examination and comparison of fountain pen inks are very important in forensic questioned documents examination in developing countries where the chances of fraud are greater in cases of cheques, marriage papers, entry of birth and death, etc. In this study, fountain pen inks of blue, black, green,...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Analytical Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/5980967 |
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| author | Mehwish Sharif Madeeha Batool Sohail Chand Zahoor Hussain Farooqi Syed Azhar Ali Shah Tirmazi Makshoof Athar |
| author_facet | Mehwish Sharif Madeeha Batool Sohail Chand Zahoor Hussain Farooqi Syed Azhar Ali Shah Tirmazi Makshoof Athar |
| author_sort | Mehwish Sharif |
| collection | DOAJ |
| description | Examination and comparison of fountain pen inks are very important in forensic questioned documents examination in developing countries where the chances of fraud are greater in cases of cheques, marriage papers, entry of birth and death, etc. In this study, fountain pen inks of blue, black, green, and red colours that are commercially used in Pakistan have been discriminated by UV-Vis spectroscopy, TLC, and FTIR spectroscopy. We have calculated and compared the results in terms of discriminating power. UV/Visible Spectroscopy of fountain pen inks of different brands showed different composition despite their similar colours. TLC was effectively used to differentiate between the colored components of inks. FTIR results showed that each brand could be distinguished by studying the pattern of their absorption spectra that appeared due to the presence of different functional groups. On the basis of combined results of UV-VIS, TLC, and FTIR, the DP was found from 0.73-0.8 for blue, 0.80-1.0 for black, 0.5-1.0 for green, and 1.0 for red colored fountain pen inks. Overall, this study demonstrated the elevated worth of analysis of fountain pen inks commercially used in Pakistan as the study for fountain pen inks, while not very common, remains an interesting target study. |
| format | Article |
| id | doaj-art-ae54ef446dbd4f07943bdf0a2a0339d8 |
| institution | Kabale University |
| issn | 1687-8760 1687-8779 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Analytical Chemistry |
| spelling | doaj-art-ae54ef446dbd4f07943bdf0a2a0339d82025-02-03T05:57:41ZengWileyInternational Journal of Analytical Chemistry1687-87601687-87792019-01-01201910.1155/2019/59809675980967Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared SpectroscopyMehwish Sharif0Madeeha Batool1Sohail Chand2Zahoor Hussain Farooqi3Syed Azhar Ali Shah Tirmazi4Makshoof Athar5Institute of Chemistry, University of the Punjab, Lahore, PakistanInstitute of Chemistry, University of the Punjab, Lahore, PakistanCollege of Statistical and Actuarial Sciences, University of the Punjab, Lahore, PakistanInstitute of Chemistry, University of the Punjab, Lahore, PakistanInstitute of Chemistry, University of the Punjab, Lahore, PakistanInstitute of Chemistry, University of the Punjab, Lahore, PakistanExamination and comparison of fountain pen inks are very important in forensic questioned documents examination in developing countries where the chances of fraud are greater in cases of cheques, marriage papers, entry of birth and death, etc. In this study, fountain pen inks of blue, black, green, and red colours that are commercially used in Pakistan have been discriminated by UV-Vis spectroscopy, TLC, and FTIR spectroscopy. We have calculated and compared the results in terms of discriminating power. UV/Visible Spectroscopy of fountain pen inks of different brands showed different composition despite their similar colours. TLC was effectively used to differentiate between the colored components of inks. FTIR results showed that each brand could be distinguished by studying the pattern of their absorption spectra that appeared due to the presence of different functional groups. On the basis of combined results of UV-VIS, TLC, and FTIR, the DP was found from 0.73-0.8 for blue, 0.80-1.0 for black, 0.5-1.0 for green, and 1.0 for red colored fountain pen inks. Overall, this study demonstrated the elevated worth of analysis of fountain pen inks commercially used in Pakistan as the study for fountain pen inks, while not very common, remains an interesting target study.http://dx.doi.org/10.1155/2019/5980967 |
| spellingShingle | Mehwish Sharif Madeeha Batool Sohail Chand Zahoor Hussain Farooqi Syed Azhar Ali Shah Tirmazi Makshoof Athar Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy International Journal of Analytical Chemistry |
| title | Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy |
| title_full | Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy |
| title_fullStr | Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy |
| title_full_unstemmed | Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy |
| title_short | Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy |
| title_sort | forensic discrimination potential of blue black green and red colored fountain pen inks commercially used in pakistan by uv visible spectroscopy thin layer chromatography and fourier transform infrared spectroscopy |
| url | http://dx.doi.org/10.1155/2019/5980967 |
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