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Forensics

Forensics. Lin Wozniewski lwoz@iun.edu. Disclaimer. This presentation was prepared using draft rules. There may be some changes in the final copy of the rules. The rules which will be in your Coaches Manual and Student Manuals will be the official rules. Safety. Students must wear:

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Forensics

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  1. Forensics Lin Wozniewski lwoz@iun.edu

  2. Disclaimer • This presentation was prepared using draft rules. There may be some changes in the final copy of the rules. The rules which will be in your Coaches Manual and Student Manuals will be the official rules

  3. Safety • Students must wear: • Closed shoes • Slacks or skirts that come to the ankles • Lab coat or lab apron • Indirect vent or unvented chemical splash proof goggles. No impact glasses or visorgogs are permitted • Sleeved Shirt (if wearing a lab apron)

  4. Students can bring • Spot plate or something to do reactions in • Micrspatula or something to get powders out • Forceps/ Metal Tongs • pH paper • Hand lens

  5. Students Can Bring • Test Tubes • Test Tube rack • Test Tube holder • Eye droppers • Funnel • Filter Paper • Battery Conductivity meter • Flame loop • Ruler • Calculator

  6. Students Can Bring • Slide & cover slip • Pencil • Paper towels • 1 sheet of paper on which anything is acceptable. • A writing instrument • Nothing else is allowed

  7. Supervisors will provide • Unknowns • Iodine Solution • 2 M HCl • Benedicts Solution • 2 M NaOH • Differential Density materials • Chromatography Materials • Wash bottle with Distilled or ROI water • Candle and matches

  8. Supervisors will Provide • Bunsen Burner or other heat source of similar BTU • Hot water bath • Waste Container • (Microscope?) • (Other reagents?)

  9. Main Focus • Chemical Analysis • Polymers • Chromatography • Crime Scene Physical Evidence • How to prepare students • Resources

  10. How To Prepare Students • Have students develop a dichotomous key for identifying chemicals • Practice identifying chemicals in as short a time as possible. • Practice identifying plastics • Practice identifying hairs (only human, dog, cat, bat, & horse possible) • Practice identifying fibers

  11. How to Prepare Students • Practice doing pen chromatograms/doing Rf • Practice doing juice chromatograms/doing Rf • Practice doing TLC/doing Rf • Practice identifying masses from mass specs • Practice identifying fingerprints-primary and secondary structure

  12. How to Prepare Students • Practice matching DNA chromatograms/electropherograms • Practice matching shoes & tires to their tracks • Practice blood typing • Do a liquid spatter activity • Practice using a waste container • Do a glass refractive index activity

  13. Resources • The National SO Website www.soinc.org • To prepare students for test • http://mypage.iu.edu/~lwoz/socrime/index.htm • Source for mass specs http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/cre_index.cgi • For Event Supervisors • http://mypage.iu.edu/~lwoz/socrime/index.htm • For Lesson Plans for classroom use • http://mypage.iu.edu/~lwoz/socrime/index.htm

  14. Questions? • Thank You

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