Printer Friendly

Ammonia enhances cigarettes' nicotine.

Three years ago, after intense congressional probing, the tobacco lobby released a hush-hush list of 599 additives that have been used in cigarettes (SN: 5/21/94, p. 330). Many substances on the list, such as carrots, figs, vanilla, dill seeds, and cocoa, were undoubtedly added to impart some characteristic flavor to the products. The function of others, such as ammonia, was less obvious--though the Food and Drug Administration had obtained tobacco industry documents suggesting that such high-pH substances might facilitate nicotine's addictiveness.

Now, researchers at the Oregon Graduate Institute in Portland have confirmed that suspicion. Their experiments show that ammonia helps turn the nicotine in smoke into gas, rendering the drug more available to the lungs.

Much of a cigarette's nicotine starts out in a fairly nonvolatile, acid form, notes environmental chemist James F. Pankow, who led the study. This acid also possesses an electric charge, which keeps the nicotine from moving easily through tissue and into blood. Ammonia converts the acid form of nicotine into a free base--an uncharged alkaline form that moves more freely into the air and tissue. Pankow likens this to treating cocaine with alkaline materials to create the more lipid-soluble, potent freebase cocaine known as crack.

In the August Environmental Science & Technology, Pankow's team shows that ammonia can increase nicotine's availability as a gas by 100 times.
COPYRIGHT 1997 Science Service, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1997, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

 
Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:The Oregon Graduate Institute confirms that ammonia as an additive in cigarettes increased nicotine's addictive aspect
Author:Raloff, Janet
Publication:Science News
Article Type:Brief Article
Date:Aug 16, 1997
Words:223
Previous Article:Retirement plan for research chimps.
Next Article:And music videos their image.
Topics:


Related Articles
Nicotine: a drug of choice?
Smoking silences critical pain messages.
Smoking out nicotine's impact on colitis.
The great nicotine debate: are cigarette recipes 'cooked' to keep smokers hooked?
What's in a cigarette? Tobacco companies blend hundreds of additives into their products.
FDA asks for help from Congress to regulate cigarettes as drugs.
Class actions claim tobacco industry deceived smokers about nicotine.
HOOKED ON NICOTINE.
Teen Smokers' Patch?

Terms of use | Privacy policy | Copyright © 2018 Farlex, Inc. | Feedback | For webmasters