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Chemistry
420 - Forensic Chemistry, S 2008
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Agilent Technologies GC-MS
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The
emphasis of this course is to teach laboratory techniques
used in modern forensics laboratories. Topics include the
use of Gas Chromatography-Mass Spectrometry (GC-MS) in the
detection of accelerants in arson investigations, nitroglycerin
in gunshot residue, and blood alcohol concentration measurements.
Additional topics include the detection of latent bloodstains
using Luminol, and the analysis of drugs using spot tests
and Diffuse Reflectance Infrared Fourier Transform Infrared
Spectroscopy (DRIFTS).
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Instructor:
Dr. Pete Poston |
office:
NS 110
phone: (503) 838-8218
office hours: MW 10, R 1-3, F 2 make an appointment,
or just drop by if I'm not too busy.
web page: http://www.wou.edu/poston
email questions: postonp@wou.edu |
| Pre-requisite's |
Ch 313 Instrumental
Methods, or consent of the instructor. |
| Textbook |
"Forensic
Chemistry", by Suzanne Bell, Pearson/Prentice-Hall, 1st ed,
2006
We will also
be using the following texts for additional reference material:
- Skoog,
Holler, and Nieman, "Principles of Instrumental Analysis",
5th ed, Saunders College Publishing,1998
- Daniel
Harris, "Quantitative Chemical Analysis", 5th ed,
Freeman,1999
- Richard
Saferstein, "Forensic Science Handbook", Prentice-Hall,
Vol 1-3
- "Criminalistics
Lab Manual" by C. Meloan, R. Saferstein, and R. James,
Prentice-Hall, 199
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| Lab |
Laboratory
handouts will also be furnished by the instructor. |
| Homework |
Homework is
assigned but not graded. Selected homework problems will appear
on exams. |
| Grading |
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100
pts
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(33%)
Midterm (Wed, Apr 30) |
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100
pts
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(33%)
Final (Mon, Jun 9, 12-2 PM) |
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100
pts
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(33%)
8 labs at 10 pts each, scaled to 100 pts |
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300
pts
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total |
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| Late
Labs & Make-ups |
Labs must
be turned in on time or else chaos ensues! The following "late
fees" will be assessed starting at 8 AM the day following
the due date:
1 day late
= 1/4 off, 2 days late = 1/2 off, 3 days late = 3/4 off
You will receive
a zero for all labs more than 3 days late. No labs will be accepted
past the last day of classes. If you receive two zeros, on
any two labs, you fail the course!
Lab make-ups:
Family-related emergencies or deaths must be communicated through
the Office of Student Affairs (838-8221) and broadcast to all
your professors. Illnesses must be accompanied by a note from
your doctor. Under these conditions I will replace the missing
lab with the average percentage you received on the remaining
labs.
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| Exam
Policies |
There are
no make-up exams except for University sanctioned events, in which
case please see me a week in advance for an alternative testing
time. In the event of an unexpected emergency, then -
Midterms: Family-related emergencies or deaths must be
communicated through the Office of Student Affairs (838-8221)
and broadcast to all your professors. Illnesses must be accompanied
by a note from your doctor. Under these conditions there are two
options for replacing the midterm score:
(1) If the exam hasn't been handed back to the class yet, then
arrange a make-up time with me.
(2) If the exam has already been returned to the class, and since
there's only one midterm, then I will replace the missing hour
exam score with the final exam score.
Final exam: University policy states that the final
exam time will not be moved for any reason. Please do not
ask to take the final early because you want to leave for vacation
early, etc. Again, if you miss the final and follow the same procedure
listed in the section above on Late Labs & Make-ups,
then I will give you an incomplete and you can take the final
in a future class section to make it up (see Incompletes
section below).
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| Incompletes |
Incompletes
are given under special circumstances such as medical reasons, family
emergencies, etc. In order to receive an incomplete, the University
requires you to sign a contract with me outlining the steps you
must take to finish the course. Usually this means there will be
a time deadline for completion of the course before your grade reverts
to an "F". |
| Students
with Disabilities |
It is your
right to request special accommodations under the Americans with
Disabilities Act. For questions, call the Office for Disability
Services at (503) 838-8250 V/TTY, or email them at ods@wou.edu.
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Syllabus
| Week
of |
Lecture
Topics
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Reading,
Homework, and References**
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Lab
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| Mar
31 |
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Bell:
- Ch 1: Introduction
- Ch 2: Statistics,
Sampling, and Data Quality
Homework:
Ch
2: 9
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Mon-Wed:
Extra Lecture Time
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| Apr
7 |
- Sample
Preparation
- Immunoassay
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Bell:
- Ch 4: Sample
Preparation, Thin-Layer Chromatography, and Immunoassay
Homework:
Ch
4: 5, 6, 8, 9, Integrative: 1
Additional
References:
- Supelco,
Inc. Bulletin 910, "Guide to Solid Phase Extraction", download
from the internet here
- Supelco,
Inc. Bulletin 923, "SPME: Theory and Optimization of Conditions",
download from the internet here.
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Lab
#1
- Statistical Applications in Forensics
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| Apr
14 |
- Overview
of Drugs
- Presumptive
Tests
- Drug
Analysis Pt I
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Bell:
- Ch 6: An
Overview of Drugs and Pharmacology
- Ch 7: Forensic
Drug Analysis I
RS:
- Vol II
(1st ed): Ch 3 "Forensic Identification of Controlled Substances"
Homework:
Ch
6: 12, 13, Integrative: 2, 3a-d
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Lab
#2 - UV-Vis Spectroscopy of Salicylates in Blood***
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| Apr
21 |
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Bell:
- Ch 9: The
Chemistry of Combustion and Arson
RS:
- Vol I (2nd
ed): Ch 9 "Arson and Explosive Investigation
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Lab
#3 - Acid-Base Extractions |
| Apr
28 |
- Midterm
(Wed, Apr 30)
- Chemistry
of Combustion
- Arson
Analyses
- Explosives
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Bell:
- Ch 10:
Combustion, Part II: Forensic Analysis of Physical Evidence
Associated With Combustion
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Lab #4
- Presumptive Drug Tests and Drug Analysis by Diffuse Reflectance
Infrared Fourier Transform Spectroscopy (DRIFTS)
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| May
5* |
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Bell:
RS:
- Vol III
(1st ed): Ch 4 "Infrared Microscopy and its Forensic Application",
p. 196-252
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Lab #5
- GC-MS of Common Accelerants Found in Arson Investigations
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| May
12 |
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RS:
- Vol I (2nd
ed): Ch 12 "The Determination of Alcohol in Blood and Breath"
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Lab #6
- Raman Spectroscopy: Forensic Analysis of a Crime Scene
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| May
19 |
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RS:
- Vol I (1st
ed): Ch 7 "Identification and Grouping of Bloodstains",
p. 271-276
Additional
References:
- "Introduction
to Organic Laboratory Techniques: A Contemporary Approach",
2nd ed. by D. L. Pavia, G. M. Lampman, and G. S. Kriz, Jr.,
Saunders College Publishing, 1982, p. 371-375
- "Chemical
Demonstrations", Vol 1, B. Z. Shakhashiri, Univ. Wisconsin
Press, 1983, p. 156-167
- "Criminalistics",
6th ed, Richard Saferstein, Prentice-Hall,1998, p. 370
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Lab #7
- Synthesis and Application of Luminol in the Detection of Latent
Blood Stains
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| May
26 |
- MON
MAY 26 - MEMORIAL DAY HOLIDAY
- Forensic
Serial Number Restoration
- Polymers
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Bell:
- Ch 14:
The Forensic Analysis of Paper, Fibers, and Polymers
Internet
Link:
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Lab
#8 - Restoring Serial Numbers on Metals*** |
| Jun
2 |
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*Last
day to drop without being responsible for a grade is Fri, May
9
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**RS
= Richard Saferstein, "Forensic Science Handbook",
Prentice-Hall, Vol 1 -1982 & 2002, Vol 2 -1988, Vol 3 -1993
***
from "Criminalistics Lab Manual" by C. Meloan, R.
Saferstein, and R. James, Prentice-Hall, 1998, p.131-135, Experiment
15 - Restoring Serial Numbers on Metals

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