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  1. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 29

    Thermochemical and thermophysical mapping of burning superslim and kingsize cigarettes

    EHLERT S.(1,3); CUI H.(2); HEIDE J.(3); XIE F.(2); DENG N.(2); LIU C.(4); McADAM K.(4); WALTE A.(1); ZIMMERMANN R.(3)
    (1) Photonion GmbH, Schwerin, Germany; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China; (3) University of Rostock, Dept. of Analytical Chemistry, Rostock, Germany; (4) British American Tobacco, R&D Centre, Southampton, U.K.
    After presenting and publishing the proof of principle of the in-situ thermochemical and thermophysical mapping inside a burning Super Slim (SS) cigarette, we now extended the study scope to other cigarette formats and smoking regimes[1]. A...
  2. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 44

    Time and spatially resolved in-situ determination of temperature, pressure and gas phase concentration of selected smoke constituents inside a burning superslim cigarette. Part I – Thermophysical mapping

    CUI Huapeng(1); EHLERT S.(2); XIE Fuwei(1); DENG Nan(1); LI Bin(1); LIU Chuan(3); McADAM K.(3); WALTE A.(2); ZIMMERMANN R.(2)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China; (2) Photonion GmbH, Schwerin, Germany; (3) British American Tobacco (Investments) Limited, Global R&D, Southampton, U.K.
    Superslim cigarettes in China are a relevant product category on the market. Accurate determination of key thermo-physical and -chemical parameters in superslim cigarettes are essential for the mechanistic understanding of combustion as well as...
  3. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 45

    Time and spatially resolved in-situ temperature and pressure measurements with soft ionisation mass spectrometry inside a burning superslim cigarette. Part II – thermochemical mapping

    EHLERT S.(1,3); CUI Huapeng.(2); HEIDE J.(3); XIE Fuwei(2); DENG Nan(2); LIU Chuan(4); McADAM K.(4); WALTE A.(1); ZIMMERMANN R.(3)
    (1) Photonion GmbH, Schwerin, Germany; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China; (3) University of Rostock, Dept. of Analytical Chemistry, Rostock, Germany; (4) British American Tobacco, R&D Centre, Southampton, U.K.
    Superslim cigarettes are an increasingly popular category of cigarettes in China. Accurate measurements of key thermophysical and thermochemical parameters in superslim cigarettes is essential for mechanistic understanding of pyrolysis processes,...
  5. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, STPOST 16

    The stability of diacetyl and acetyl propionyl and the conversion of acetoin to diacetyl in e-liquids

    VAS C.; MARGHAM J.; WATERS G.; SANCHEZ M.; COSTIGAN S.; McADAM K.
    British American Tobacco, R&D Centre, Southampton, U.K.
    Background: Diacetyl (DA) and acetyl propionyl (AP) have been reported to be used in many e-liquid flavours. Inhalation of DA in occupational settings has been shown to lead to the onset of a decline in respiratory function and a condition known as...
  6. TSRC, Tob. Sci. Res. Conf., 2016, 70, abstr. 33

    Nicotine delivery from e-cigarettes Part 1: study designs for two pharmacokinetic studies

    FEARON I.M.(1); ELDRIDGE A.(1); GALE N.(1); SHEPPERD C.J.(1); McEWAN M.(1); CAMACHO O.M.(1); MAVROPOULOU E.(1); NIDES M.(2); McADAM K.(1); PROCTOR C.(1)
    (1) British American Tobacco (Investments) Limited, Southampton, UK; (2) Los Angeles Clinical Trials, Burbank, CA, USA
    Nicotine pharmacokinetic (PK) studies are an important tool in developing our understanding of actual nicotine delivery into the body from electronic cigarettes and other nicotine-containing products. Furthermore, data from such studies may...
  7. TSRC, Tob. Sci. Res. Conf., 2016, 70, abstr. 34

    Nicotine delivery from e-cigarettes Part 2: data and learnings from two pharmacokinetic studies

    FEARON I.M.(1); ELDRIDGE A.(1); GALE N.(1); SHEPPERD C.J.(1); McEWAN M.(1); CAMACHO O.M.(1); MAVROPOULOU E.(1); NIDES M.(2); McADAM K.(1); PROCTOR C.(1)
    (1) British American Tobacco (Investments) Limited, Southampton, UK; (2) Los Angeles Clinical Trials, Burbank, CA, USA
    Nicotine pharmacokinetic (PK) studies are an important tool in developing our understanding of actual nicotine delivery into the body from electronic cigarettes and other nicotine-containing products. Furthermore, data from such studies may...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2015, Jeju, STPOST 13

    Influence of machine-based puffing parameters on aerosol and smoke yields from contemporary nicotine inhalation products

    McADAM K.(1); DAVIS P.(1); ASHMORE L.(1); EATON D.(1); ELDRIDGE A.(1); LIU C.(1)
    British American Tobacco, R&D Centre, Southampton, U.K.
    A study was conducted to investigate the effect that changing the puffing parameters used to generate an aerosol from an electronic cigarette had on the mass of aerosol collected as well as the yields of the major chemical constituents of the...
  9. TSRC, Tob. Sci. Res. Conf., 2014, 68, abstr. 01

    Integrating chemical, toxicological and clinical research to assess the potential of reducing health risks associated with cigarette smoking through toxicant regulation

    PROCTOR C.; SHEPPERD C.; McADAM K.; ELDRIDGE A.; MEREDITH C.
    British American Tobacco, Group Research and Development Centre, Regents Park Road, Southampton, UK
    The concept of a risk continuum for tobacco and nicotine products has been proposed that represents the likely association of different categories of product with toxicant exposure and possibly risk. At one end are cigarettes, deemed the most risky,...
  10. TSRC, Tob. Sci. Res. Conf., 2014, 68, abstr. 41

    Highly time-resolved two-dimensional mapping of the molecular combustion and pyrolysis product concentrations during a puff in a burning cigarette

    ZIMMERMANN R.(1); HERTZ-SCHÜNEMANN R.(1); STREIBEL T.(1); EHLERT S.(2); WALTE A.(2); LIU C.(3); McADAM K.(3)
    (1) University of Rostock, Rostock, Germany; (2) Photonion GmbH, Schwerin, Germany; (3) British American Tobacco, Southampton, UK
    Cigarette smoking is an extremely complex and dynamic chemical process. The gas phase chemistry of tobacco combustion in the tobacco voids and pores is difficult to address by conventional analytical methods. Recently photo ionisation mass...