Forensic Chemistry



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Forensic Chemistry

Laboratory Manual

Revision 7.1

Dr. Bruce McCord

Department of Chemistry

Florida International University



Spring 2005


This document is dedicated to the memory of Anthony J. Andrews (1965-2001) Professor of Forensic Chemistry, Ohio University.



Laboratory Schedule

Week 1

Footprints and Fingerprints 1

1a

Week 2

Footprints and Fingerprints 2

1b

Week 3

Seized Drugs: Spot tests

2a

Week 4

Seized Drugs: microcrystal tests

2b

Week 5

Seized Drugs: FTIR/UV/GC/

2c

Week 6

Documents and Trace: Inks by TLC

3a

Week 7

Documents and Trace: Fibers by PLM

3b

Week 8

Documents and Trace: Glass

3c

Week 9

Explosives: Low Explosives 1

4

Week 10

Explosives: Low Explosives 2

4

Week 11

Toxicology:GC/MS 1

5

Week 12

Toxicology: GC/MS 2

5

Week 13

Arson 1

6

Week 14

Arson 2

6

Week 15

Presentation of Results

7











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Table of Contents

Laboratory Procedures and General Information



  1. Footprints and Fingerprints

  2. Drug analysis: microscopic tests, color tests, and instrumental

  3. Trace Evidence: inks, paints and fibers

  4. Glass Analysis

  5. Explosives analysis: Spot tests, FTIR, Capillary electrophoresis

  6. Drug extraction in urine: GC/MS

  7. Arson analysis: GC-FID

Appendix A, color test reagents ………………………………..………...46

Appendix B, Sample Lab Report…………………………………………….6



65

Notes
1. Each student will have one laboratory report for which the score will be thrown out


2. Removal from the labs or ingestion of controlled substances by any route, removal of equipment, glassware, and/or chemicals, cheating, dishonesty, plagiarism, or deception in fulfilling requirements will not be tolerated. Penalties include failing the course, and criminal prosecution.

LABORATORY NOTEBOOK PROCEDURES

  1. The first page of the notebook should have your name and the course name.

  2. The second page of the notebook should be a table of contents. Each time an experiment begins, a page number entry for the experiment should be entered in the table of contents.

  3. When you enter the laboratory to start an experiment, the following should already be included in your notebook.

  1. Experiment name.

  2. Written statement of purpose.

  3. Summary of procedure to be performed condensed from the experiment handout.

  4. Space set aside and labelled for the experimental data to be taken.

  1. Data collected in the laboratory should be entered in the allocated space in the notebook.

  2. As you conduct the experiment, note observations in your notebook. For example, note any unexpected problems with the equipment or procedures.

  3. All notebook entries should be in ink.

  4. Each page should be labelled with the date.

  5. Important: At the end of each period, have the instructor or TA initial your notebook pages.


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