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56 results

  1. TSRC, Tob. Sci. Res. Conf., 2012, 66, abstr. 45

    Comparison of analytical data provided by different laboratories

    CAHOURS X.(1); VERRON T.(1); PURKIS S.(2); COLARD S.(2)
    (1) SEITA, Imperial Tobacco Group, Fleury-les-Aubrais, France; (2) Imperial Tobacco Limited, Bristol, UK
    Regulatory authorities are currently discussing the measurement and imposition of ceilings on certain smoke constituents. However, if routine measurement of these constituents is to be required, the laboratories need to use the same validated methods...
  2. TSRC, Tob. Sci. Res. Conf., 2012, 66, abstr. 46

    Analytical method validation – application of the accuracy profile to the method “determination of total alkaloids in tobacco”

    TEILLET B.(1); VERRON T.(1) ; CAHOURS X.(1) ; COLARD S.(2)
    (1) SEITA Imperial Tobacco Group, Fleury-les-Aubrais, France; (2) Imperial Tobacco Limited, Bristol, UK
    In the context of methodology for cigarette product characterization, it is important to subject the method to its intended-use (e.g. regulatory requirement) in order to confirm its “fitness for purpose” as described in ISO17025 and ASTM E2857-11....
  3. TSRC, Tob. Sci. Res. Conf., 2012, 66, abstr. 47

    Cigarette burning and alternative smoking regime

    COLARD S.(1); VERRON T. (2); PURKIS S.W.(1); CAHOURS X.(2)
    (1) Imperial Tobacco Limited, Bristol, UK; (2) SEITA, Imperial Tobacco Group, Fleury-les-Aubrais, France
    Context and objective: Some regulations require the use of two smoking regimes. The objective of this study is to better understand the impact of the smoking regime on the cigarette burning process. The combustion of a cigarette during smoking can be...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 02

    Analytical method validation steps - benefits, limitations and an alternative approach

    COLARD S.; CAHOURS X.; VERRON T.; DESTRUHAUT S.
    SEITA Imperial Tobacco Group, Fleury-les-Aubrais, France
    In the framework of the growing regulations regarding tobacco products, interest is expressed in a wider product characterisation in terms of contents and emissions. This leads to the need for new analytical method developments. One of the last steps...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 03

    Statistical simulation to evaluate the effects of the number of laboratories and replicates on the precision of measurement method

    VERRON T.(1); CAHOURS X.(1); PURKIS S.W.(2)
    (1) SEITA, Imperial Tobacco Group, Fleury-les-Aubrais, France; (2) Imperial Tobacco Limited, Bristol, UK
    In an inter-laboratory comparison, different laboratories measure particular characteristics of a product. For cigarettes, smoke analyte yields in one or more homogeneous samples are measured under ISO-defined conditions. The comparison of different...
  6. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 07

    Relationship between puff intensity and smoke yields from a series of different smoking regimes

    TROUDE V.(1); PURKIS S.W.(2); CAHOURS X.(1)
    (1) SEITA, Imperial Tobacco Group, Fleury-les-Aubrais, France; (2) Imperial Tobacco Limited, Bristol, UK
    Imperial Tobacco Group data from two commercially available cigarettes, sold in the early 1980s and having 0 and 28% filter ventilation was presented this year at an ISO TC126 Working Group 10 meeting. The products had been smoked at different...
  7. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 22

    Determination of r&R variability for the expression of smoke constituent level per unit amount of smoke nicotine

    CAHOURS X.; VERRON T.
    SEITA Imperial Tobacco Group, Fleury-les-Aubrais, France
    Limits on the levels of selected mainstream smoke constituents per milligram of nicotine (nicotine ratio) have been proposed as an option for regulatory compliance of cigarettes. However, these limits must come with tolerances in order to avoid...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 24

    Using a structural model based on a class of generalized covariance criteria, to explore the generation process of smoke compounds

    BRY X.(1); REDONT P.(1); VERRON T.(2); CAHOURS X.(2)
    (1) I3M, UM2, Montpellier, France; (2) SEITA Imperial Tobacco Group, Fleury-les-Aubrais, France
    Our aim is to explore a structural model: several variable groups describing the same units are assumed to be structured around latent dimensions that are linked together through a linear model that may have several equations. This type of model is...
  9. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 27

    Effect of sugar content on acetaldehyde yield in cigarette smoke

    CAHOURS X.(1); VERRON T.(1); PURKIS S.W.(2)
    (1) SEITA, Imperial Tobacco Group, Fleury-les-Aubrais, France; (2) Imperial Tobacco Limited, Bristol, UK
    The relationship between cigarette blend sugar and acetaldehyde formed in its smoke is a matter of current regulatory interest. Some tobacco scientists have used data by Phillpotts [1] to illustrate that cigarette smoke yields of acetaldehyde are...
  10. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 28

    Results of the 2010 CORESTA Part Filter Method Ring Trial

    CLAYTON P.M.(1); VERRON T.(2); PRASAD S.K.(1)
    (1) British American Tobacco, Group R&D, Southampton, UK; (2) SEITA Imperial Tobacco Group, Fleury-les-Aubrais, France
    The Part Filter Method (PFM) is used to estimate smokers' mouth-level exposure to nicotine and tar. Previously in 2006 the CORESTA Smoking Behaviour Sub-Group commissioned a ring trial of the PFM in which participating laboratories completed the...