000			01756nam a22002057a 4500
005			20240117111238.0
008			240116b ||||| |||| 00| 0 eng d
022			_a0021-9584
100			_aSáiz, Jorge
245			_aInks in the Analytical Laboratory _b: A Forensics Activity for Undergraduate Students (Journal Article)
260			_aWashington DC _b: American Chemical Society _c, 2023
300			_a3670–3676p.
440			_aJournal of Chemical Society _v, Volume 100: Number 9, September 2023
505			_a***______{For Hard Copy, Please visit Library.}________***
520			_aAbstract: Here, we present a laboratory activity in which the students work on an analysis of a questioned document that was written with one out of five possible pens. As a forensics study, the activity applied chemistry and analytical chemistry tools to solve the case. The students were able to apply polarity and solubility concepts to select and discard some pens. They also learned the basics of fluorescence and the possibilities of using it to detect falsifications. Then, they were able to set up the detection conditions for the HPLC-UV analysis by studying the absorbance behavior of the blue dyes. Finally, the students identified the pen used to write the suicide note and partially characterized the composition of the ink. This multipurpose activity perfectly suits subjects involving analytical techniques and forensics for students with basic knowledge of chemistry that are studying instrumental techniques for the first time.
650			_aAnalytical chemistry| Liquid Chromatography| spectrophotometry| fluorescence
700			_aRupérez-Pascualena, Javier
856			_uhttps://doi.org/10.1021/acs.jchemed.3c00035
942			_cPER
999			_c45304 _d45303