Alcohol & Alcohol Testing for DUI’s. By K.G. Wilson Virginia Tech Police Department. What is Forensic Toxicology ?. Toxicology Science of poisons, embracing the physical and chemical study of all the known poisonous substances, as well as the methods of testing... Toxicologists
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Virginia Tech Police
Science of poisons, embracing the physical and chemical study of all the known poisonous substances, as well as the methods of testing...
Detect and identify any drugs or poisons present in a person's body fluids, tissues, and organs. This type of investigation is conducted not only on the victim but, when possible, also on the suspected perpetrator of the crime.
Performs toxicity test to evaluate the risk that exposure poses to humans
Attempts to determine how substances exert deleterious effects on living organisms
Judges whether or not a substance has low enough risk to justify making it available to the public
WINE, RED & WHITE
10-14%Beverage TypeApproximate% Alcohol Content
In the United States, the proof of an alcoholic beverage is twice the percentage of alcohol by volume. Meaning an 86 proof bottle of whiskey contains 43% alcohol by volume.
Alcohol increases the risk of heart disease, cancer and liver failure.
When alcohol is present in the liver (1) it preempts the breakdown of fat
which accumulate within the liver cells. As fatty cells enlarge they can rupture (2) or grow into cysts(3) that replace normal cells. After years of heavy drinking, fibrous scar tissue(4) or cirrhosis, impedes the normal flow of arterial and venous blood through the organ
Even a healthy brain (A) loses cells, but
long term heavy drinking can speed degeneration.
The alcoholic brain (B) often shows signs of atrophy which is wasting away of body tissue, an organ. the failure of an organ or part to grow or develop, as because of insufficient nutrition.
Heavy drinking can cause a health liver (C)
to become fatty and enlarged (D) an early
and reversible stage of liver disease. Cirrhosis
(E) or scarring can lead to liver failure and death
The breathalyzer indirectly determines the quantity of alcohol consumed by measuring the absorption of light by potassium dichromate before and after its reaction to alcohol
595 – 64%
54 – 6%
287 – 31%
340 – 36%