摘要 : The potential of energetic utilization of woody biomass fuels is influenced by their composition. The mineral salts dissolved in groundwater can migrate from the root to leaves in the transport tissue during the growth of the plan... 展开 The potential of energetic utilization of woody biomass fuels is influenced by their composition. The mineral salts dissolved in groundwater can migrate from the root to leaves in the transport tissue during the growth of the plants. Newly lumbered wood contains high amounts of water, which is vaporized during drying but the migrated salts are left behind. Before the energetic utilization the examination of heavy-metal content and chemical composition of plants may provide information on the behaviour of the raw materials during combustion, and may yield information about the toxicity of combustion products. Potentially toxic chemical elements are not distributed evenly in the plant parts therefore technologies firing different plant parts have different emission trends as well. According to our researches certain metals are partitioned in the soft parts (sprout, twig), while others in the bark or heartwood. 收起