Chemistry A-Level
Infrared breathalysers measuring ethanol in breath
What Infrared breathalysers measuring ethanol in breath means in Chemistry A-Level, as defined for OCR.
Definition of Infrared breathalysers measuring ethanol in breath
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Reference: OCR
Ethanol vapour in exhaled breath absorbs infrared radiation at a characteristic wavenumber, and the amount of absorption is proportional to the ethanol concentration.
Topics that use Infrared breathalysers measuring ethanol in breath
- Analytical techniques (OCR A-Level)
Related terms
- Absorption and re-emission of infrared radiation
- Absorption of infrared radiation
- Absorption of infrared radiation by bond vibrations
- Bond stretching and bending
- Broad peak shape caused by hydrogen bonding
- Change in dipole moment
- Changes to energy usage
- characteristic absorption bands
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