Module 8 lab
1. What physical evidence did you find at the victim’s home?
Matches, Natalie’s ID, burned floor, and space heater.
2. Describe the process that you used to take a sample of the puddle-shaped burn pattern on the floor. Why did you also take samples from the portion of the floor that was not burned?
I used a chisel to scrape up some wood and then used tweezers to pick it up and put it in an airtight container. I would take samples from none burned wood to compare the results in testing.
3. What evidence did the space heater provide? What did the evidence indicate?
It was on high, and the wire had burned from outside heat.
4. What information did you gain from the pictures taken at the scene?
The fire started at the base of the heater, the victim was laying in that spot during the fire and the fire started at the burned puddle.
5. To whom did the fingerprints on the match box belong? What characteristics of the fingerprints helped you to determine they were a match? How long does the average IAFIS search take?
Donald Parker, hooks and an island, it usually takes about 15 hours.
6. Why is there a charcoal strip inside the containers that you used to collect the floor pieces? Why are these pieces saved after the solution has been prepared for the GC?
They absorb gas evaporations, their saved in case the first tests weren’t reliable.
7. What elements were present in the gas chromatograph from your puddle sample? How did this differ from the control graph?
Oak chemicals, Gas, and the chemicals we put in it for the test.
8. While performing the autopsy to determine if the victim died in the fire, what signs of inhalation did you look for? Based on the graph, what percentage of carboxyhemoglobin in the blood is deadly?
We looked to see if he had smut inside his mouth and trachea. I believe it was about 18%
9. How does the spectrometer work? What does the absorption of light waves help you to determine? How did you use the calibration curve to determine
Matches, Natalie’s ID, burned floor, and space heater.
2. Describe the process that you used to take a sample of the puddle-shaped burn pattern on the floor. Why did you also take samples from the portion of the floor that was not burned?
I used a chisel to scrape up some wood and then used tweezers to pick it up and put it in an airtight container. I would take samples from none burned wood to compare the results in testing.
3. What evidence did the space heater provide? What did the evidence indicate?
It was on high, and the wire had burned from outside heat.
4. What information did you gain from the pictures taken at the scene?
The fire started at the base of the heater, the victim was laying in that spot during the fire and the fire started at the burned puddle.
5. To whom did the fingerprints on the match box belong? What characteristics of the fingerprints helped you to determine they were a match? How long does the average IAFIS search take?
Donald Parker, hooks and an island, it usually takes about 15 hours.
6. Why is there a charcoal strip inside the containers that you used to collect the floor pieces? Why are these pieces saved after the solution has been prepared for the GC?
They absorb gas evaporations, their saved in case the first tests weren’t reliable.
7. What elements were present in the gas chromatograph from your puddle sample? How did this differ from the control graph?
Oak chemicals, Gas, and the chemicals we put in it for the test.
8. While performing the autopsy to determine if the victim died in the fire, what signs of inhalation did you look for? Based on the graph, what percentage of carboxyhemoglobin in the blood is deadly?
We looked to see if he had smut inside his mouth and trachea. I believe it was about 18%
9. How does the spectrometer work? What does the absorption of light waves help you to determine? How did you use the calibration curve to determine