|
CASE
OF THE
TRAMPLED
TEEN
|
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to the Case Report (Student
Pages) |
| MAJOR
EVIDENCE |
TECHNIQUES |
SET
UP FOR A PARTICULAR CASE * |
| Blood
Samples
- from
Rebecca Ferris
- from
Bradley Kimmer
|
Gas
chromatography (ethanol)
Gas
chromatography - mass spectrometry (drugs) |
- Ferris:
ethanol (0 g/100 mL) ; cocaine (750 ng/mL)
- Kimmer:
ethanol (0.2 g/100 mL) ; cocaine (125 ng/mL)
|
| Fabric
Samples
- from
S. Argones' car
- from
Peter Bredon's car
- from
Brad Kimmer's car
- from
R. Ferris' shirt
|
Visible diffuse reflectance spec. (color)
FT-Raman
spec. (composition) |
- Argones:
100% cotton
- Bredon:
65/35 cotton/polyester
- Kimmer:
50/50 cotton/polyester
- Ferris:
50/50 cotton/polyester
|
| Glass
Samples
- from
S. Argones' car
- from
Peter Bredon's car
- from
Brad Kimmer's car
- from
crime scene
|
Microscopy,
refractive index tests
Atomic
absorption spectrophotometry (Mg) |
- Crime
scene: several pieces of bottle glass, several pieces of headlamp
glass from Kimmer's car, one piece of windshield glass of the
type found in Bredon's car
|
| Swab
of Rebecca Ferris' shoes |
Solid
phase extraction & Liquid chromatography
(follow
procedures described in explosives section) |
- Atrazine
(a common herbicide) found on victim's shoes, indicating she had
exited the corn field before entering the roadway.
|
| White
Powder from Peter Bredon |
Infrared
spec. (bulk drug) |
- Mixture
of starch and caffeine ("cocaine")
|
* ONE POSSIBLE SCENARIO: Rebecca Ferris, high on cocaine makes her way through
a corn field before stepping onto a country road. Bradley Kimmer, intoxicated
with alcohol and drugs and driving at high speed, collides with and kills
Rebecca. He leaves her by the side of the road and drives on.