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Paint Addenda, Trace Evidence Quality Assurance Guidelines (Forensic Science Communications, January 2000)

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Forensic Science Communications (masthead graphic)
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

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