Simulated source determination of blue ballpoint pen inks using ftir spectroscopy, pearson product moment correlation and principle component analysis
Ballpoint pens are the most common writing implement used to write a document therefore it is not surprising to see their association with criminal cases such as insurance fraud, homicide, drug dealing and kidnapping. The ink deposited by a ballpoint pen is the course of writing a dubious documen...
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2015
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| Online Access: | http://eprints.usm.my/60274/1/NUR%20DIYANA%20BINTI%20ABD%20RAZAK%20-%20e.pdf |
| _version_ | 1825908250224099328 |
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| author | Razak, Nur Diyana Abd |
| author_facet | Razak, Nur Diyana Abd |
| author_sort | Razak, Nur Diyana Abd |
| collection | USM |
| description | Ballpoint pens are the most common writing implement used to write a document
therefore it is not surprising to see their association with criminal cases such as insurance
fraud, homicide, drug dealing and kidnapping. The ink deposited by a ballpoint pen is the
course of writing a dubious document can reveal useful information about the ballpoint
pen. This study uses pair-wise manual comparison, statistical technique of Pearson
Product Moment Correlation (PPMC) or simply Pearson’s r and chemometric technique
of principle component analysis to determine the ballpoint pen responsible for writing a
simulated threatening note. Eleven (11) blue ballpoint pen inks in which one of them was
used to write a threatening note were subjected to Fourier Transform Infra Red (FTIR)
spectroscopy. The FTIR spectra of the blue ballpoint pen inks were first interrogate using
pair- wise i.e. one to one manual comparison followed by PPMC and PCA. Of three
techniques employed, only PCA through its principle component score plot had
successfully determined the blue ballpoint pen inks responsible for writing the simulated
threatening note . This study revealed that combination of FTIR and PCA can be used to
determine the original source of ink provided that the reference ink is available. |
| first_indexed | 2024-04-22T06:15:20Z |
| format | Monograph |
| id | usm.eprints-60274 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-04-22T06:15:20Z |
| publishDate | 2015 |
| publisher | Universiti Sains Malaysia |
| record_format | dspace |
| spelling | usm.eprints-602742024-04-14T03:28:34Z http://eprints.usm.my/60274/ Simulated source determination of blue ballpoint pen inks using ftir spectroscopy, pearson product moment correlation and principle component analysis Razak, Nur Diyana Abd Q Science (General) RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine Ballpoint pens are the most common writing implement used to write a document therefore it is not surprising to see their association with criminal cases such as insurance fraud, homicide, drug dealing and kidnapping. The ink deposited by a ballpoint pen is the course of writing a dubious document can reveal useful information about the ballpoint pen. This study uses pair-wise manual comparison, statistical technique of Pearson Product Moment Correlation (PPMC) or simply Pearson’s r and chemometric technique of principle component analysis to determine the ballpoint pen responsible for writing a simulated threatening note. Eleven (11) blue ballpoint pen inks in which one of them was used to write a threatening note were subjected to Fourier Transform Infra Red (FTIR) spectroscopy. The FTIR spectra of the blue ballpoint pen inks were first interrogate using pair- wise i.e. one to one manual comparison followed by PPMC and PCA. Of three techniques employed, only PCA through its principle component score plot had successfully determined the blue ballpoint pen inks responsible for writing the simulated threatening note . This study revealed that combination of FTIR and PCA can be used to determine the original source of ink provided that the reference ink is available. Universiti Sains Malaysia 2015 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/60274/1/NUR%20DIYANA%20BINTI%20ABD%20RAZAK%20-%20e.pdf Razak, Nur Diyana Abd (2015) Simulated source determination of blue ballpoint pen inks using ftir spectroscopy, pearson product moment correlation and principle component analysis. Project Report. Universiti Sains Malaysia. (Submitted) |
| spellingShingle | Q Science (General) RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine Razak, Nur Diyana Abd Simulated source determination of blue ballpoint pen inks using ftir spectroscopy, pearson product moment correlation and principle component analysis |
| title | Simulated source determination of blue ballpoint
pen inks using ftir spectroscopy, pearson product
moment correlation and principle component analysis |
| title_full | Simulated source determination of blue ballpoint
pen inks using ftir spectroscopy, pearson product
moment correlation and principle component analysis |
| title_fullStr | Simulated source determination of blue ballpoint
pen inks using ftir spectroscopy, pearson product
moment correlation and principle component analysis |
| title_full_unstemmed | Simulated source determination of blue ballpoint
pen inks using ftir spectroscopy, pearson product
moment correlation and principle component analysis |
| title_short | Simulated source determination of blue ballpoint
pen inks using ftir spectroscopy, pearson product
moment correlation and principle component analysis |
| title_sort | simulated source determination of blue ballpoint pen inks using ftir spectroscopy pearson product moment correlation and principle component analysis |
| topic | Q Science (General) RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine |
| url | http://eprints.usm.my/60274/1/NUR%20DIYANA%20BINTI%20ABD%20RAZAK%20-%20e.pdf |
| work_keys_str_mv | AT razaknurdiyanaabd simulatedsourcedeterminationofblueballpointpeninksusingftirspectroscopypearsonproductmomentcorrelationandprinciplecomponentanalysis |