CSI Chromatography

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CSI Chromatography

  1. 1. You are a forensic detective, working for the LORETO BRAY Crime Squad A terrible crime has been committed and you can solve it! Listen very carefully….. BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS 1
  2. 2. Last FRIDAY before lunch at approx 12.35pm an empty box that had previously contained CADBURYS Crunchies was found lying on the canteen floor. The canteen lady was horrified! BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS Somebody had stolen them but who could it be????? 2
  3. 3. On inspection it was discovered that the top of the box had been forced open using the top of a felt tipped marker. Only tiny traces of ink were evident so the colour of the marker could not be easily identified… BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS 3
  4. 4. A team of Forensic Scientists swabbed the edge of the box and ran chromatography tests on the ink found. Figure A. opposite shows the pattern the ink made when separated. BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS Fig.A: Ink from Crime Scene 4
  5. 5. Shortly after the crime, these four members of staff at Loreto Bray were found wandering around, looking very suspicious, not far from the crime scene. When searched, each of them were found to have a different coloured marker on them. BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS 5 Deputy Principal The Caretaker Ms. Donnelly Ms. Kelly
  6. 6. NOW its up to you… What will you do to find out who the culprit is? Can you solve the crime???? BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS 6
  7. 7. WERE YOU RIGHT ???? BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS 7
  8. 8. BRAY CAUTION CRIME SCENE DO NOT CROSS CAUTION CRIME SCENE DO NOT CROSS WANTED 8

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