发明申请
US20050034737A1 Treatment of tobacco and tobacco smoke with chelating agents to remove Pb-210 and Po-210
审中-公开
用螯合剂处理烟草和烟草烟雾以去除Pb-210和Po-210
- 专利标题： Treatment of tobacco and tobacco smoke with chelating agents to remove Pb-210 and Po-210
- 专利标题（中）： 用螯合剂处理烟草和烟草烟雾以去除Pb-210和Po-210
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申请号： US10639130申请日： 2003-08-13
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公开(公告)号： US20050034737A1公开(公告)日： 2005-02-17
- 发明人: Charles Kunz , Walter Kunz
- 申请人： Charles Kunz , Walter Kunz
- 主分类号： A24B15/28
- IPC分类号： A24B15/28 ; A24D3/16 ; A24B3/10 ; A24B15/00
摘要：
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.