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553 results

  1. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-1, p. 1-7., ISSN.0173-783X

    Determination of environmental tobacco smoke from a second-generation electrically heated cigarette smoking system and conventional cigarettes

    OEY J.; LAU R.W.; ROETHIG H.J.
    Philip Morris USA, Research Center, Richmond, VA, USA
    This substudy of a randomized, controlled, forced switching, open-label, parallel-group clinical study in a total of 100 healthy adult male and female smokers compared environmental tobacco smoke (ETS) produced from smoking a second generation ...
  2. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-1, p. 19-31., ISSN.0173-783X

    Formation of tobacco specific nitrosamines in mainstream cigarette smoke; Part 1, FTC smoking

    MOLDOVEANU S.C.; BORGERDING M.F.
    R.J. Reynolds Tobacco Company, R&D, Winston-Salem, NC, USA
    This report evaluates the formation of nitrosonornicotine (NNN) and of 4-(methyl-nitrosamino)- 1-(3-pyridyl)- 1-buta-none (NNK) from nicotine, and of NNN from nornicotine in the mainstream smoke of a burning cigarette. The cigarettes analyzed in the study ...
  3. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-1, p. 32-45., ISSN.0173-783X

    Isolation, fractionation, and identification of sucrose esters from varions oriental tobaccos employing supercritical fluids

    ASHRAF-KHORASSANI M.; NAZEM N.; TAYLOR L.T.
    Virginia Tech, Dept. of Chemistry, Blacksburg, VA, USA
    Isolation, fractionation, and identification of sucrose esters from aged oriental tobacco employing supercritical fluids have been completed. Underivatized sucrose ester-rich extracts were obtained using supercritical CO 2 at densities greater than 0.73 g ...
  4. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-1, p. 46-62., ISSN.0173-783X

    Mathematical modeling of a lit-end cigarette: puffing cycle and effects of puff counts

    SAIDI M.S.; MHAISEKAR A.; HAJALIGOL M.R.
    Saidi Partnership, Richmond, VA, USA
    The burning cycles of a lit-end cigarette were numerically simulated using a 3-D model that includes both the cigarette and its surrounding ambient air and the effects of buoyancy forces. The solid and gas phases were treated separately in a thermally non ...
  5. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-1, p. 8-18., ISSN.0173-783X

    A modelling approach to develop machine smoking protocols reflecting human puffing behaviour for conventional cigarettes

    URBAN H-J.; GOMME W.; SCHORP M.
    Philip Morris Intl, Philip Morris Product SA, R&D, Neuchâtel, Switzerland
    Our objective was to develop machine-smoking protocols (i.e. puff volume, puff duration and puff frequency) reflecting the distribution of human smoking behaviour as a complement to the International Standard (ISO) protocol. For this purpose, a modelling ...
  6. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-2, p. 107-114., ISSN.0173-783X

    Determination of benzene and toluene in exhaled cigarette smoke

    MOLDOVEANU S.C.; COLEMAN W.M. III; WILKINS J.M.
    R.J. Reynolds Tobacco Company, R&D, Winston-Salem, NC, USA
    This study describes the results regarding the evaluation of retention efficiency by humans of benzene and toluene from cigarette smoke. The evaluated cigarette was a common commercial cigarette with 10.6 mg `tar' [U.S. Federal Trade Commission (FTC) ...
  7. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-2, p. 115-20., ISSN.0173-783X

    Evaluation of aroma in Oriental tobaccos as based on valeric acid gas chromatography

    DAGNON S.; TASHEVA R.; STOILOVA A.
    Inst. for Tobacco and Tobacco Products, Plovdiv, Bulgaria
    Levels of valeric acids (isovaleric and 3-methylvaleric) in leaves and smoke of different tobacco types were quantified by capillary gas chromatography (GC) using flame ionization detector (FID). The aroma characteristics of the smoke were scored by ...
  8. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-2, p. 85-97., ISSN.0173-783X

    Determination of polycyclic aromatic hydrocarbonsin exhaled cigarette smoke

    MOLDOVEANU S.C.; COLEMAN W.M. III; WILKINS J.M.
    R.J. Reynolds Tobacco Company, Winston-Salem, NC, USA
    The retention by humans of 20 polycyclic aromatic hydrocarbons (PAHs) from mainstream cigarette smoke was evaluated. The analysis was done by a new technique using solid phase extraction (SPE) for the cleanup and the conservation of PAHs. The new ...
  9. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-2, p. 98-106., ISSN.0173-783X

    Determination of hydroxybenzenes in exhaled cigarette smoke

    MOLDOVEANU S.C.; COLEMAN W.M. III; WILKINS J.M.
    R.J. Reynolds Tobacco Company, R&D, Winston-Salem, NC, USA
    This study describes the results regarding the evaluation of retention efficiency by humans of hydroxybenzenes (phenols) from mainstream cigarette smoke. Over twenty phenols were evaluated in the exhaled smoke of a commercial cigarette with 10.6 mg &#039 ...