Treatment of tobacco and tobacco smoke with chelating agents to remove Pb-210 and Po-210
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United States of America Patent
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N/A
Issued Date -
Feb 17, 2005
app pub date -
Aug 13, 2003
filing date -
Aug 13, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention relates to the treatment of tobacco and tobacco smoke with chelating agents to reduce the concentration of Pb-210 and Po-210. Chelating formulations such as the tetrasodium salt of ethylenediaminetetraacetic acid in aqueous solution with a wetting agent are sprayed onto the tobacco during growth and/or the chelating formulations are used to soak or wash the tobacco after harvest but before curing the tobacco. Pb-210, Po-210 and other metals are removed from tobacco smoke by applying chelating agents to the surface of the tobacco and/or the filter material.
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