forensics

12
Forensi cs Lin Wozniewski [email protected]

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Forensics. Lin Wozniewski [email protected]. 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. Students can bring. - PowerPoint PPT Presentation

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Page 1: Forensics

Forensics

Lin [email protected]

Page 2: Forensics

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

Page 3: Forensics

Students can bringSpot plate or something to do

reactions inMicrspatula or something to get

powders outForceps/ Metal TongspH paperMagnetHand lens

Page 4: Forensics

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

Page 5: Forensics

Students Can BringSlide & cover slipPencilPaper towels1 sheet of paper on which anything

handwritten is acceptable. Sheets will be collected at the end of the event

A writing instrumentNothing else is allowed

Page 6: Forensics

Supervisors will provideUnknowns Iodine Solution2 M HClBenedicts Solution2 M NaOHDifferential Density materialsChromatography MaterialsWash bottle with Distilled or ROI

waterCandle and matches

Page 7: Forensics

Supervisors will Provide

Bunsen Burner or other heat source of similar BTU

Hot water bath Waste Container (Microscope?) (Other reagents?)

Page 8: Forensics

Main FocusChemical AnalysisPolymersChromatographyCrime Scene Physical

EvidenceHow to prepare students Resources

Page 9: Forensics

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 possible) Practice identifying fibers

Page 10: Forensics

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 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

Page 11: Forensics

Resources The National SO Website www.soinc.org The information on my thumb drive

Page 12: Forensics

Questions?Thank You