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Web Date: February 8, 2010

After The Smoke Clears

Indoor Chemistry: Tobacco residues react with chemicals in air to form dangerous products
Department: Science & Technology
News Channels: Environmental SCENE
Keywords: smoke, tobacco

Nonsmokers may have a new worry—thirdhand smoke. Nicotine residues on indoor surfaces can react with nitrous acid in the air to form carcinogenic nitrosamines not present in fresh tobacco smoke, chemists at Lawrence Berkeley National Laboratory have demonstrated.

"The residual smoke on surfaces appears to become even more toxic through reactions with other atmospheric chemicals," says K. Michael Cummings, a . . .

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