Advances in the forensic analysis and dating of writing ink - Brunelle, Richard L. (Charles C. Thomas, 2003)
The use of the forensic examination and dating of inks on questioned documents has become common, and law enforcement agencies rely heavily on these techniques during criminal investigations whenever there is some question as to when a document was written. In this book, the authors describe the many advances that have occurred in the field of forensic examination and dating of inks on documents. Actual laboratory procedures for examining and dating inks and other related substances are described, as well as the forensic applications of these techniques in criminal and civil litigations. In ad
Historical development: how we got here -- Ink analysis: training and interdisciplinary coordination -- Ink chemistry -- Preliminary methods of analysis -- Forensic comparison and identification of writing inks by thin layer chromatography and densitometry -- Instrumental analysis of inks -- Ink libraries -- Ink dating: TLC/densitometry -- Other means of dating writing inks -- Experiments regarding the effects of ink thickness, paper, storage conditions, linearity of densitometer measurements, and the aging of paper on ink dryness tests -- Results of actual case examinations using R-ratio, percent extraction and dye ratio methods -- The society of forensic ink analysts (SOFIA) -- Court admissibility of relative age comparison techniques