Ink Chromotography

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					Lesson 4: Ink Chromatography               roles                 names         mod
Questioned Documents Unit

MissL
Forensics
2013-4
1st semester

http://www.youtube.com/watch?v=gpFb635N2wo&feature=related
Paper Chromatography

Prelab: what are we looking for chemically when we match the ink on the ransom notes
with ink from pens

Focus: Can we tell what pen ink was used to write the ransom note?

Data:
Pen Name         Rf color 1        Rf color 2



Ransom Note


Team Question:
Based on your Rf values, which pen was used to write the ransom note??

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        Case Study:
http://www.abc.net.au/science/forensic/bigcases/case_sample_03.htm

You can copy paste your answers:

   1. The episode started in 1981 when the editor of Germany's Stern magazine
      committed himself??
   2. Two experts authenticated portions of the documents by comparing the
      handwriting with???
   3. They confirmed that the documents were written by the same person. This was
      true, but the samples of 'genuine' Hitler handwriting???
   4. In May of that year, the West German police subjected the diaries to a full-scale
      forensic analysis. Instead of checking the handwriting???
   5. This revealed that the documents were written on paper containing a whitening???
   6. Chromatography identified four different ink types in the diaries. None of these
      had apparently???
   7. Modern forensic ink chromatography is much more sophisticated???
8. Changes to the ink 'recipe' by manufacturers can also help to specify a??

				
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