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The potential for application of ink stable isotope analysis in questioned document examination.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chesson, Lesley A. Tipple, Brett J. Barnette, Janet E. Cerling, Thure E. Ehleringer, James R. |
| Copyright Year | 2015 |
| Abstract | We investigated a novel application of stable isotope abundance analysis of nitrogen (15N), carbon (13C), hydrogen (2H), and oxygen (18O) to characterize pen ink. We focused on both ballpoint and gel pen inks. We found that the isotope ratios of ink from pens purchased together in a package were similar and within-package stable isotope ratio variability was not significantly larger than the variability of isotope reference materials used during analysis. In contrast, the isotope ratios of ink from pens of the same brand purchased in three states of the continental USA were significantly different from each other and there was isotope ratio variation among pens of the same brand but different, unknown production periods. The stable isotope ratios of inked paper were statistically distinguishable using measured δ15N values. Paper inked with different gel pens was statistically distinguishable using measured δ2H values. The capacity of stable isotope ratios to differentiate among ballpoint inks as well as gel inks shows that stable isotope analysis may be a useful and quantifiable investigative technique for questioned document examination, although current sample size requirements limit its utility. Application of the technique in casework will require the development of micro-scale sampling and analysis methods. |
| Starting Page | 27 |
| Ending Page | 33 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.scijus.2014.05.010 |
| PubMed reference number | 25577004 |
| Journal | Medline |
| Volume Number | 55 |
| Issue Number | 1 |
| Alternate Webpage(s) | https://www.ehleringer.net/uploads/3/1/8/3/31835701/452.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.scijus.2014.05.010 |
| Journal | Science & justice : journal of the Forensic Science Society |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
