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
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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)

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