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9 results

  1. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 087

    Analysis of organic acid content in e-liquids and e-cigarette aerosol by high performance liquid chromatography – ultraviolet detection (HPLC-UV)

    RODRIGUEZ-LAFUENTE A.; LODEVICO R.; SHARIFI M.; JOZA P.; RICKERT W.S.
    Labstat International, Kitchener, ON, Canada
    Weak organic acids can be used as preservative agents, potentially affecting the stability of e-cigarette solutions. However, they can also impact characteristics like the aroma and taste of aerosols. The objective of this study was to develop and ...
  2. TSRC, Tob. Sci. Res. Conf., 2016, 70, abstr. 46

    Cambridge filter pad collection efficiency of menthol from e-cigarette aerosols – an investigative study

    SHARIFI M.; JOZA P.; LODEVICO R.; RICKERT W.
    Labstat International ULC, Kitchener, ON Canada
    The demand for developing analytical protocols for the analysis of e-cigarette emissions has been rapidly increasing in recent years. A majority of methodologies currently used for the charaterization of e-cigarette aerosols are derived from approaches ...
  3. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 28

    Determination of nine volatile nitrosamines and hydroxy-nitrosamines in cigarette filler and mainstream tobacco smoke using isotope-dilution LC-MS/MS

    SHARIFI M.; JOZA P.; RICKERT W.
    Labstat International ULC, Kitchener, Ontario, Canada
    Volatile nitrosamines (VNA) and N-nitrosodiethanolamine (NDELA) in tobacco and tobacco smoke have been traditionally quantified using multi-step procedures involving either chemoluminescence (GC-TEA) or more recently mass spectrometric (GC-MS) techniques. ...
  4. TSRC, Tob. Sci. Res. Conf., 2011, 65, abstr. 11

    An inter-laboratory comparison of urinary 3-hydroxypropylmercapturic acid measurement demonstrates good reproducibility between laboratories.

    CHEUNG F.(1); MINET E.(1); ERRINGTON G.(1); MCEWAN M.(1); SCHERER G.(2); NEWLAND K.(3); SHARIFI M.(4); BAILEY B.(5)
    (1) British American Tobacco, Group R&D, Southampton, UK; (2) ABF GmbH; (3) Celerion; (4) Labstat International Inc.; (5). Covance Laboratories Ltd.
    Background- Biomarkers have been used extensively in clinical studies to assess toxicant exposure in smokers and non-smokers and have recently been used in the evaluation of novel tobacco products. The urinary metabolite 3-HPMA, a metabolite of the major ...
  5. CORESTA Congress, Paris, 2006, SS 19

    Changes in the TSNA content of cigarette filler and mainstream smoke determined using an improved LC/MS/MS method

    JOZA P.J.; SHARIFI M.; WU J.; RICKERT W.S.
    Labstat International Inc., Kitchener, ON, Canada
    An improved LC-MS/MS method for the determination of tobacco specific nitrosamines has been developed, utilizing four internal deuterated standards instead of two. This was found to be necessary due to an analyte dependent sample matrix effect, which can ...