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Related Experiment Videos

Isopropanol interference with breath alcohol analysis: a case report

B K Logan1, R G Gullberg, J K Elenbaas

  • 1Washington State Toxicology Laboratory, Seattle.

Journal of Forensic Sciences
|July 1, 1994
PubMed
Summary

Forensic breath alcohol testing can be affected by interfering substances like acetone. This case shows infrared breathalyzers accurately detected interferences from isopropanol and acetone, preventing false positives.

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Area of Science:

  • Forensic Science
  • Analytical Chemistry
  • Toxicology

Background:

  • Acetone and other substances can interfere with forensic ethanol measurement in breath.
  • Modern infrared breath alcohol instruments aim to distinguish ethanol from acetone.
  • Instrumental or procedural issues can still lead to false-positive interferant results.