06 IR ATR_page_10

06 IR ATR | page 10 | https://thedailydialectics.com/pdfs/education/chemistry/analytical-chem/analytical-methods-for-analysis-UH/06 IR ATR/06 IR ATR.pdf

Chem4229-Instrumental Methods of Analysis signal obtained by scanning air (empty beam) to the signal obtained by scanning the sample. First an inter- ferogram of the source (background) is scanned. This is a reference interferogram with no sample in the light path, its frequency spectrum is…