Why potassium bromide as a reference used in ftir spectroscopy?
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✨KBr has a larger transmission window in the IR compared to NaCl . .
✨.. This method exploits the property that alkali halides become plastic when subjected to pressure and form a sheet that is transparent in the infrared region
. Potassium bromide (KBr) is the commonest alkali halide used in the pellets.
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◀️◀️ QUESTION ▶️▶️
Why potassium bromide as a reference used in ftir spectroscopy?
◀️◀️ ANSWER ▶️▶️
KBr is an alkyl halide
any alkyl halide doe not show any absorption spectrum in infrared region
hence kbr only to make sure that the sample stands correctly.
kbr also do uniformly distributed in the pellet.
hence , potassium bromide as a reference used in ftir spectroscopy
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