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209 results

  1. Beitr. Tabakforsch. Int., 1991, 15-1, p. 11-7., ISSN.0173-783X

    The determination of benzo (a )pyrene and benz (a )anthracene in mainstream and sidestream smoke of the Kentucky reference cigarette 1R4F and a cigarette which heats but does not burn tobacco : A comparison

    RISNER C.H.
    R.J. Reynolds Tobacco Company, R&D, Bowman Gray Technical Center, Winston-Salem, NC, USA
    A quantitative method for the determination of benz- (a)anthracene (B (a)A) and benzo (a)pyrene (B (a)P) in mainstream and sidestream cigarette smoke by high performance liquid chromatography (HPLC) has been developed. Mainstream and sidestream ...
  2. Beitr. Tabakforsch. Int., 1991, 15-1, p. 19-32., ISSN.0173-783X

    Heavy metals in tobacco and tobacco smoke II. Trace metals cadmium, lead, copper, cobalt and nickel in Austrian cigarettes, and in particle phase and smoke gas

    NITSCH A.; KALCHER K.; GRESCHONIG H.
    Inst. für Analytische Chemie, Karl-Franzens-Universität Graz, Graz, Austria.
    The trace metals cadmium, lead, copper, cobalt and nickel have been analyzed in 14 different Austrian filter cigarettes. The results show a good conformity thus allowing the calculation of a characteristic mean value. The same metals were analyzed ...
  3. Beitr. Tabakforsch. Int., 1991, 15-1, p. 33-41., ISSN.0173-783X

    Tobacco leaf protein : I. An evaluation of the use of putative chemical growth enhancers for tobacco leaf protein production

    DE JONG D.W.
    USDA-ARS, Crops Res. Lab., Oxford; North Carolina State University, Raleigh, NC, USA
    Effects of foliar applications of long-chain fatty compounds on production of leaf protein from tobacco genotypes were evaluated. Triacontanol, purported to be a growth stimulant, had minimal effects on most experimental parameters. A propriety product ...
  4. Beitr. Tabakforsch. Int., 1991, 15-1, p. 43-52., ISSN.0173-783X

    Tobacco leaf protein : II. Genetic and fractionation approaches to improving tobacco leaf protein production

    DE JONG D.W.; PITTARELLI G.
    USDA-ARS, Crops Res. Lab., Oxford; North Carolina State University, Raleigh, NC, USA
    Tobacco variety T.I. 401 was evaluated for seasonal leaf protein yields and crossbred with other genotypes to determine whether leaf protein yield was a genetically transmissible trait. Relatively high leaf protein yields associated with later maturity ...
  5. Beitr. Tabakforsch. Int., 1992, 15-2, p. 59-64., ISSN.0173-783X

    An application of Fourier Transform Infrared (FT-IR) microspectroscopy to the study of cigarette manufacturing defects

    THOMPSON M.M.; IRELAND M.S.
    Lorillard Tobacco Company, Greensboro, NC, USA
    FT-IR microspectroscopy was used to investigate a common type of cigarette defect in which the filter separates from the tobacco rod. Infrared imagings of the adhesive located at this junction on the tipping papers from both defective and acceptable ...
  6. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 100, ST26, ISSN.0525-6240

    Dynamic mass measurements of cigarettes by neutron radioscopy

    JENKINS R.W.; LANZILLOTTI H.V.; McRAE D.D.; BRENIZER J.S.; MORA G.A.
    Philip Morris USA, Richmond, VA, USA
    Neutron radioscopy is a technique that uses a beam of neutrons and a video-based neutron imaging system to produce real-time images of an object. The images, or more correctly, the two-dimensional projections of the object, look like X-ray images and the ...
  7. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 105, A1, ISSN.0525-6240

    An approach on the effects of nitrogen fertilization and antioxidant addition on the alkaloids content of flue-cured tobacco in Portugal

    LOURENCO M.G.; FERRAO J.E.M.; FIGUEIREDO E.T.L.; AMARO J.A.T.; ROCHA M.E.V.
    Universidade Technica de Lisboa, Instituto Superior de Agronomia, Lisboa, Portugal.
    For three years a study on the influence of different forms of nitrogen fertilization on the alkaloids content of flue-cured tobacco was carried out in Portugal. In order to prevent the nitrosamines formation, the tobacco leaves were treated with some ...