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January 2000 Volume 2 Number
1
Trace Evidence Quality
Assurance Guidelines
(January 1999 Revision)
Paint
Addenda
PA2.3.2.3 and PA2.3.3.3
Successful completion of
the following undergraduate or graduate courses:
1. One year (or equivalent)
general chemistry
with laboratory work,
2. One year (or equivalent) organic chemistry
with laboratory work, and
3. Analytical/instrumental analysis.
If the following is not available
at the graduate or undergraduate level, completion through structured
course work is required.
4. Light Microscopy With
Basic Polarized Light
Microscopy (PLM)
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Paint Addendum
PA2.4.1.2a
The training period will
be a minimum of one year, full time, for the inexperienced trainee
examiner. The allotted time includes the specifications under
Sections 2.4.1.2, 2.4.1.3, and, 2.4.1.4. These sections refer
to casework observation, supervised casework, proficiency test(s),
examinations, and moot court.
Suggested inclusion topics
for the time line follow:
I. General Background
A. Encountering Paint Evidence
B. History of Paint, General and Forensic Terminology
C. Use and Composition of Paint
D. Overview of Forensic Paint Examinations
II. Search and Collection
Techniques (Reference Recovery Guide)
A. Clothing
B. Motor Vehicles
C. Other Objects
III. Microscopic Examination
and Characterization
A. Fracture Characteristics
and Comparisons
B. Surface Defects and Contaminants
C. Sample Preparation Techniques
D. Microscopic Recognition and End-Use Classification
E. Microscopic Comparisons
IV. Solvent and Microchemical
Examinations
A. Binder Classification
B. Microchemical Comparisons
V. Binder Examinations
A. Binder Classification
B. Infrared Spectroscopy
C. Pyrolysis Gas Chromatography
D. Pyrolysis Gas Chromatography/Mass Spectrometry
E. Pyrolysis Mass Spectrometry
F. Other Methods of Binder Analysis
G. Binder Characterization and Comparison
VI. Pigment and Extender
Examinations
A. Pigments and Extenders
B. Infrared Spectroscopy
C. Scanning Electron Microscopy/EDS
D. X-Ray Fluorescence Spectroscopy
E. X-Ray Diffraction Spectrometry
F. Elemental Compositional Comparisons
G. UV/VIS Microspectrophotometry
H. Other Methods of Analysis
VII. Additive Examinations
A. Types and Functions
B. Infrared Spectroscopy
C. Pyrolysis Gas Chromatography
D. Pyrolysis Gas Chromatography/Mass Spectrometry
E. Pyrolysis Mass Spectrometry
F. Scanning Electron Microscopy/EDS
G. X-Ray Fluorescence Spectroscopy
H. UV/VIS Microspectrophotometry
I. Other Methods of Analysis
VIII. Surface Effects
A. Weathering/Aging
B. Surface Protectants
C. Contaminants
IX. Significance and Interpretation
A. Presence of Paint
B. Type of Paint (Classification)
C. Discrimination
D. Report Writing
E. Testimony
X. Supervised Casework
XI. Final Evaluation
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FORENSIC SCIENCE COMMUNICATIONS JANUARY 2000 VOLUME 2 NUMBER 1 |
