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首页> 外文期刊>Journal of Environmental Science and Health >Effect of different soil conditions on selected heavy metal accumulation by Salix viminalis tissues
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Effect of different soil conditions on selected heavy metal accumulation by Salix viminalis tissues

机译：不同土壤条件对沙柳组织重金属积累的影响

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摘要

This investigation was undertaken to determine efficiency of selected heavy metal ions by different Salix viminalis tissues in relation to local physicochemical parameters. Seven heavy metals (Cd, Co, Cr, Cu, Ni, Pb and Zn) were analyzed in 5 types of tissues (bark, root, shoots, leaves and petioles). The results presented here show different accumulation rates of tested metals in individual tissues depending on location and soil characteristics. A similar trend in the accumulation of elements in leaves and petioles was observed except for zinc and chromium. The quantities of heavy metals in shoots indicate their limited migration in plant (especially lead and cadmium). In contrast high levels of zinc in leaves were observed, which suggests strong migration of this metal to upper parts of plants. Analyzed willows were characterized by selective accumulation of ions of investigated heavy metals, with different metal migration abilities depending on location (soil properties e.g. limited migration of lead and intensive migration of cadmium and zinc to aboveground organs). A correlation between metal accumulation in the tissue and soil factors (pH, redox potential, total organic carbon) was observed. The total accumulation and translocation of heavy metal ions (especially chromium) depend on soil parameters and to some extent wood structure (cellulose, lignin).
机译：进行了这项研究，以确定不同柳柳组织相对于局部理化参数所选择的重金属离子的效率。在5种类型的组织（树皮，根，枝，叶和叶柄）中分析了7种重金属（Cd，Co，Cr，Cu，Ni，Pb和Zn）。此处显示的结果表明，取决于位置和土壤特性，不同金属在各个组织中的积累速率不同。除锌和铬外，在叶和叶柄中元素的积累趋势相似。枝条中的重金属含量表明它们在植物中的迁移有限（尤其是铅和镉）。相反，在叶片中观察到高水平的锌，这表明该金属向植物上部的强烈迁移。分析的柳树的特征是选择性地堆积了所研究的重金属离子，根据位置的不同，金属的迁移能力也不同（土壤性质，例如铅的迁移有限，镉和锌向地上器官的迁移严重）。观察到组织中金属积累与土壤因素（pH，氧化还原电势，总有机碳）之间的相关性。重金属离子（尤其是铬）的总积累和转运取决于土壤参数，并在某种程度上取决于木材结构（纤维素，木质素）。

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