Negative absorption peak in FTIR

  • #1

Main Question or Discussion Point

What does it mean if one found negative absorption in uv-vis absorption graph?
 

Answers and Replies

  • #2
Jano L.
Gold Member
1,333
74
Hi,
I have heard this explanation:
in IR spectroscopy you have to subtract signal due to water and CO2 and if their densities decrease in the course of experiment, your background which you want to subtract may become stronger than the actual background. Then you get negative peaks.
Jano
 
  • #3
63
0
Something are exciting over the UV illumination processes.
 

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