Search Results

48 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2015, Izmir, Turkey, AP 35

    Measuring canopy nitrogen nutrition in tobacco plants using hyper spectrum parameters

    ZOU Yong; YE Xiaoqing; YU Zhihong; CHEN Yufeng; WANG Wei; CHEN Jianjun
    (1) Shenzhen Tobacco Ind. Co., Ltd. of CNTC, Shenzhen, Guangdong, P.R. China; (2) Shenzhen Boton Flavors & Fragrances Co., Ltd., Shenzhen, Guangdong, P.R. China; (3) Tobacco Laboratory, South China Agricultural University, Guangzhou, Guangdong, P.R. China
    The aim of this paper is to study the quantitative relationship between above-ground nitrogen accumulation (ANA) of flue-cured tobacco and canopy spectral parameters, and then build a monitoring model for ANA of flue-cured tobacco based on various ...
  2. CORESTA Meeting, Smoke Science/Product Technology, Jeju, 2007, SSPT 13

    Fast on-line tobacco smoke analysis with Photo Ionisation - Time-of-Flight-Mass Spectrometry - Part 1: Scientific background and basic principles

    ZIMMERMANN R.; MÜHLBERGER F.; MITSCHKE S.; STREIBEL T.; ROSE N.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Mass spectrometry (MS) with soft ionisation (i.e. non fragmenting ionisation) allows a direct on-line monitoring of organic compounds in complex gaseous matrices such as tobacco smoke. Photo ionisation (PI) methods are particularly well suited for this ...
  3. CORESTA Meeting, Smoke Science/Product Technology, Jeju, 2007, SSPT 15

    Fast on-line tobacco smoke analysis with Photo Ionisation - Time-of-Flight-Mass Spectrometry - Part 3: First measurements with a Smoke Analyzer Prototype system

    MITSCHKE S.; ROSE N.; ZIMMERMANN R.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    In the past few years several studies were undertaken investigating mainstream and sidestream smoke with modern on-line mass spectrometric methods with soft ionisation methods, such as single-photon ionisation (SPI) and resonant multi photon ionisation ...
  4. CORESTA Meeting, Smoke Science/Product Technology, Jeju, 2007, SSPT 19

    Simultaneous on-line analysis of gas phase and particulate phase of cigarette mainstream smoke

    ADAM T.; McAUGHEY J.; MITSCHKE S.; McGRATH C.; MOCKER C.; ZIMMERMANN R.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Tobacco smoke is a complex and dynamic matrix consisting of gaseous and particulate material, in which about 4800 constituents have been identified. The chemical composition and partition between phases of the smoke can change continuously and is strongly ...
  5. CORESTA Meeting, Smoke Science/Product Technology, Jeju, 2007, SSPT 20

    Sidestream smoke analysis with Single Photon Ionisation/Time-of-Flight Mass Spectrometry (SPI-TOFMS)

    MITSCHKE S.; ADAM T.; BAKER R.R.; ZIMMERMANN R.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Recently several studies dealing with online analysis of mainstream tobacco smoke utilising photo ionisation mass spectrometry (PI-MS), namely single photon ionisation (SPI) and resonance-enhanced multi photon ionisation (REMPI) time-of-flight mass ...
  6. CORESTA Congress, Paris, 2006, SS 06

    Real-time on-line characterisation of selected Hoffmann analytes in inhaled and exhaled cigarette smoke (Mouthspace) by photo ionisation time-of-flight mass spectrometry

    STREIBEL T.; SKLORZ M.; MITSCHKE S.; ADAM T.; ZIMMERMANN R.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Chemical composition of cigarette smoke has been extensively researched in the past mostly using off-line methods such as GC/MS or HPLC. Often the smoke was already aged and altered by the sampling/trapping when it was analyzed. It is known that many ...
  7. CORESTA Congress, Paris, 2006, SS 18

    Application of laser ionization mass spectrometry for on-line characterization of organic compounds in main- and sidestream smoke

    ADAM T.; MITSCHKE S.; STREIBEL T.; McAUGHEY J.; BAKER R.R.; ZIMMERMANN R.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Tobacco smoke is a fast changing and extremely complex mixture containing thousands of compounds. Consequently, to account for the dynamic smoke composition analytical techniques exhibiting a very high time resolution are required. The measurement ...
  8. CORESTA Congress, Paris, 2006, SS 23

    On-line real-time analysis of organic compounds in mainstream tobacco smoke: An optimised coupling between a commercial smoke machine and fast photo-ionisation time-of-flight mass spectrometry

    ZIMMERMANN R.; STREIBEL T.; MÜHLBERGER F.; ADAM T.; MITSCHKE S.; BAKER R.R.; GONIN M.; FUHRER K.; ROSE N.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Since the chemical properties of tobacco smoke are changing very rapidly during the smoking process, time-resolved analysis is required to better understand the chemistry of smoking. Puff-resolved analysis of tobacco smoke can be done by conventional off ...
  9. CORESTA Meeting, Smoke Science/Product Technology, Stratford-upon-Avon, 2005, SSPT 42

    Application of single-photon ionisation time-of-flight mass spectrometry (SPI-TOFMS) with an electron beam pumped excimer light source for the on-line detection of organic compounds in mainstream smoke

    ZIMMERMANN R.; MÜHLBERGER F.; WIESER J.; ULRICH A.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    Single-photon ionisation (SPI) with vacuum-ultraviolet (VUV) light allows an efficient and soft ionisation of organic compounds yielding mass spectra with no or only few fragment peaks. Selectivity is provided via the ionisation potential (IP), as only ...
  10. CORESTA Meeting, Smoke Science/Product Technology, Stratford-upon-Avon, 2005, SSPT 43

    Puff-by-puff resolved measurements of cigarette smoke by resonance-enhanced multi-photon ionization (REMPI) and single photon ionization (SPI) - time of flight mass spectrometry (TOFMS)

    MITSCHKE S.; ADAM T.; STREIBEL T.; BAKER R.R.; ZIMMERMANN R.
    University of Augsburg, Analytical Chemistry, Institute of Physics, Augsburg, Germany
    The application of soft photo-ionization mass spectrometry methods (PIMS) for cigarette mainstream smoke (MSS) analysis is demonstrated. Resonance-enhanced multi-photon ionization (REMPI) and vacuum ultra violet light single-photon ionization (SPI) were ...