Search Results

28 results

  1. CORESTA Congress, Shanghai, 2008, AP 11

    Research on X-ray attenuation method for non-destructive detection of lamina density variation rate (DVR) in cases

    LI Bin; FENG Qian; LIU Gangyi; LIU Ze; HU Qixiu; CHEN Liangyuan
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China
    The density deviation is one of the significant factors that influences the tobacco aging and primary process. For example, the phenomena of oil loss, caking, or even carbonization takes place easily in the aging process because of the large density ...
  2. CORESTA Congress, Shanghai, 2008, AP 13

    Insect-proof plastic bag (inside lining) can prevent tobacco beetles from second invasion

    SONG Jizhen; ZHOU Hanping; XI Jiaqin; YIN Qisheng; YANG Jun; XIE Jianping
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China
    The protective agent A, the mixture C and the mixture D were screened from five kinds of protective agent, and they have good touch-killing effect on tobacco beetles. Six kinds of insect-proof plastic bags were made that were marked A1, A2, C1, C2, D1, D2 ...
  3. CORESTA Congress, Shanghai, 2008, AP 37

    The study on the growing stage dynamic of the tobacco assimilate cadmium and lead and their difference of genotype

    ZHANG Shixiang; ZHANG Yanling; WEI Chunyang; WANG Jianwei
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China
    Objective: to determine the growth stage dynamic of FCT and BT to accumulate cadmium and lead and the absorbing ability difference of them. Method: a pot culture experiment with FCT and BT with different application rates of cadmium and lead was carried ...
  4. CORESTA Congress, Shanghai, 2008, SSPT 31

    Analysis of 29 organophosphorus pesticide residues in tobacco and their transfer behavior by GC-MS

    ZHANG Hongfei; TANG Gangling; HU Qingyuan; BIAN Zhaoyang; WANG Fang
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China
    A new method for determining 29 organophosphorus pesticide residues is developed. The extraction of the analytes is performed using the accelerated solvent extraction technique, and the extract is concentrated using a Vortex evaporator. Then the solid ...
  5. CORESTA Congress, Shanghai, 2008, SSPT 32

    Determination of organophosphorous pesticides residues in tobacco by LC-MS/MS

    HU Bin; LIU Huimin; XIE Fuwei; WANG Sheng; HUANG Qi; LIU Ting
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China
    A quick and simple pre-treatment method was introduced for the analysis of 15 organophosphorus pesticide residues in tobacco. The compounds were quantitatively determined by liquid chromatography-mass/mass spectrometry under the MRM mode and methanol ...
  6. CORESTA Congress, Shanghai, 2008, SSPT 40

    Identification of polar cuticular components on Oriental tobacco leaves by off-line two-dimensional liquid chromatography - mass spectrometry

    DING Li; XIE Fuwei; LIU Kejian; WANG Sheng; XIE Jianping
    Zhengzhou Tobacco Research Institute of CNTC, Chemistry Dept, Zhengzhou, Henan, China.
    Off-line comprehensive two-dimensional liquid chromatography-mass spectrometry was established for identifying the polar fraction of cuticular components in Oriental tobacco. Normal-phase liquid chromatography was chosen for the fractionation of polar ...