Journal Published Online: 01 January 1987
Volume 32, Issue 1

In Vitro Accuracy and Precision Studies Comparing Direct and Delayed Analysis of the Ethanol Content of Vapor

CODEN: JFSCAS

Abstract

In vitro accuracy and precision studies were conducted using silica gel, magnesium perchlorate, and indium encapsulation breath collection tubes in conjunction with three infrared breath ethanol analyzers (BAC Verifier, Intoxilyzer 5000, and Intoximeter 3000), the Breathalyzer 900A, and the GC Mark IV. Statistical analyses revealed good accuracy and precision and correlation between direct and delayed vapor ethanol analyses for each combination of instruments and collection devices (range = 0.000 to 0.250 g/210 L, N = 42/instrument, r > 0.99). Delayed vapor ethanol analysis utilizing each instrument and collection device combination appears to predict satisfactorily original vapor ethanol concentrations.

Author Information

Goldberger, BA
Office of the Chief Medical Examiner, Baltimore, MD
Caplan, YH
Office of the Chief Medical Examiner, Baltimore, MD
Pages: 7
Price: $25.00
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Stock #: JFS12325J
ISSN: 0022-1198
DOI: 10.1520/JFS12325J