sample analysis Flashcards
1
Q
sample types collected
A
- fire sample - as near as possible to the seat of fire
- comparative control - same substrate but elsewhere
- negative control - tools, empty containers, work benches
- positive control - done at the end of testing
2
Q
weathering
A
samples can weather due to ageing at the scene and heating in the fire
volatiles can go missing because the evaporate away (results in misleading GC reading)