Driving Under the Influence of…Gasoline?

Posted by Lawrence Taylor on November 23rd, 2004

Folks who have read my recent post, "Why Breathalyzers Don’t Measure Alcohol", seem quite surprised to find out these DUI machines are not as reliable as MADD and law enforcement agencies would have us believe. In fact, the manufacturers of these things refuse to even warrant them to do what they’re supposed to: accurately measure blood-alcohol levels (see my earlier post, "Breathalyzers: Why Aren’t They Warranted to Measure Alcohol?")

So how reliable are these "breathalyzers" that determine a person’s guilt or innocence in DUI cases? And just what DO they measure?

Well, thousands of different chemical compounds, according to scientists. Gasoline for one. Consider an article appearing on the front page of the Spokane Spokesman-Review (August 24, 1988), in which a person sitting in jail awaiting trial for DUI claimed that he had nothing to drink. He said he had run out of gas and had been siphoning gasoline from a container into his tank before being stopped by the officer and arrested. In siphoning, he had sucked on the hose to get it started and accidentally swallowed a small amount of the gasoline. He claimed that this must have caused the later high breathalyzer reading. The individual finally talked the sheriff into a demonstration to prove his story.

Taken from his cell after one week of incarceration, he swallowed a cup of unleaded gasoline and then blew into the breath machine — in this case, an "Intoximeter 3000". The results? After 5 minutes, the reading was .00%…..after 10 minutes, .04%……after 20 minutes, the Intoximeter registered .31%…..and after one hour, the reading was .28%. Even after three hours, the person still blew a .24% on the machine — three times the legal limit! (A quick call from the sheriff to a local gasoline distributor confirmed that gasoline contains no alcohol.)

This was not a freak occurrence. The results have been scientifically verified in a study conducted by CMI, Inc., the manufacturer of a competing breath machine, the "Intoxilyzer 5000", and reported in 8(3) Drinking/Driving Law Letter 6. The CMI technicians mixed a simulator solution of 800 micrograms of gasoline with 500 milliliters of distilled water, then introduced it into their machine. The solution produced readings of .619%, .631% and .635% — or about eight times the legal limit for "alcohol" levels.

You don’t have to drink gasoline to get a reading on the breathalyzer. Breathing the fumes will do it. Like at a gasoline pump.

Trackbacks & Pingbacks

  1. […] In “Why Breathalyzers Don�t Measure Alcohol“, I mentioned one of the many reliability problems breath machines have: they falsely report any of thousands of chemical compounds as “alcohol”. Scientific studies have clearly proven this defect, a problem referred to as non-specificity. “Driving Under the Influence of…Gasoline?” presented a practical example of one such compound. But is gasoline the only chemical product that has been proven to falsely register as alcohol on these machines? Far from it. See, for example, “The Response of the Intoxilyzer 4011AS to a Number of Possible Interfering Substances”, 35(4) Journal of Forensic Sciences 797, where researchers found numerous common substances which were falsely reported by breathalyzers as alcohol — including methyl ethyl ketone, which is used in lacquers, paint removers, cements, adhesives, celluloid and cleaning fluids. Another compound, toluene, also caused false high readings and is commonly used in paints, lacquers, varnishes and glues. Another is isopropanol, commonly known as rubbing alcohol. Fumes from these chemicals can be inhaled or absorbed through the skin. In an interesting scientific study, researchers performed tests on a professional painter who was exposed to lacquer fumes under controlled conditions. In the first test, he sprayed paint in a room for 20 minutes, wearing a protective mask; his blood and breath were then tested. Although the blood test showed no presence of alcohol, a breath machine (Intoxilyzer 5000) indicated a reading of .075% blood-alcohol concentration –very close to the legal limit of .08%. “Lacquer Fumes and the Intoxilyzer”, 12 Journal of Analytical Toxicology 168. Yet another scientific study discovered that diethyl ether, found in some plastics and automotive products, can be inhaled and detected by breathalyzers as “alcohol”. “Diethyl Ether Interference with Infrared Breath Analysis”, 16 Journal of Analytical Toxicology (1992). The researchers concluded that “the possibility of interference with an alcohol reading by ether or by other substances may therefore render prosecution more difficult if not impossible.” Share: […]

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  2. […] "Driving Under the Influence of…Gasoline?", I gave a practical example of one such compound. Is gasoline the only chemical product that […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — October 28, 2008 @ 9:23 am

  3. […] Results? The Effect of Anemia of Breath Tests GERD, Acid Reflux and False Breathalyzer Results Driving Under the Influence of….Gasoline? Do Breathalyzers Discriminate Against Women? Breathalyzer Inaccuracy: Testing During the […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — February 15, 2009 @ 10:54 am

  4. […] many foreign compounds can influence attempts to measure blood alcohol levels (see, for example, Under the Influence…Gasoline?, Asthma Inhalers Can Cause High Breathalyzer Results and Driving Under the Influence […]

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