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Tob Control doi:10.1136/tc.2009.034694
  • Letter
  • Letter

Third-hand smoking: indoor measurements of concentration and sizes of cigarette smoke particles after resuspension

  1. B Dautzenberg1,2
  1. 1Assistance Publique Hôpitaux de Paris, Paris, LGDA, France
  2. 2UPMC,Universités Paris and Créteil, France
  3. 3ER10UPMC, France
  4. 4EPAR, UMR-S707 INSERM, France
  5. 5Société Ecomesure, France
  1. Correspondence to Professor J F Bertholon, UPMC, 27 rue de Chaligny, Paris 75012, France; jean-francois.bertholon{at}upmc.fr
  • Accepted 18 March 2010
  • Published Online First 7 June 2010

In a previous study1 of ‘secondhand’ cigarette smoke, we showed that 75% of the particles added to indoor air were of ultrafine sizes and had a half-life in air of 18 minutes at 25°C. These particles after their deposition on household surfaces could be later put back in suspension and constitute a toxic ‘thirdhand’ smoke2 which has not, as yet, been documented through quantitative data. Consequently, we undertook direct measurements of the concentration and sizes of smoke particles after their …

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