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120 results

  1. Beitr. Tabakforsch. Int., 1986, 13-5, p. 239-42., ISSN.0173-783X

    Determination of catechol in cigarette smoke condensate by high-performance liquid chromatography (HPLC) analysis with an automated precolumn sample preparation

    GERSTENBERG B.; SPECK M.
    The analysis is performed by high-performance liquid chromatography (HPLC) with column switching between a precolumn and an analytical column. Catechol is separated from most of the condensate components by selective adsorption on a dihydroxyboryl silica ...
  2. CORESTA Meeting, Agronomy/Phytopathology, Porto Alegre, 1987, 4 p

    Reaction of flue-cured tobacco in yield and quality components to form of nitrogen and manner of application

    CAVLEK M.; KOZUMPLIK V.; TURSIC I.
    Tobacco Institute, Zagreb, Yugoslavia.
    The results obtained in this experiment indicate that for growing flue-cured tobacco in Croatia, without irrigation, nitrogen fertilizer should contain not less than 50 % of ammonium nitrogen and that the application of chemical fertilizers should be in ...