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目的:测定3种不同生境的山莨菪样品(即栽培山莨菪、移栽山莨菪以及野生山莨菪)根部各类重金属元素的含量。方法:采用原子荧光光谱仪测定元素镉、砷、汞,原子吸收光谱仪测定元素铅。结果:栽培、移栽山莨菪根部的砷、汞均有明显季节变化规律,镉含量没有显著的季节特征;移栽、野生2种生境的山莨菪之间存在正相关关系。结论:不同生境下,山莨菪根部各种重金属元素的积蓄规律有明显差异。随着城市的工业生产和交通发展,在土壤中累积并由此进入栽培山莨菪根部的重金属必然多于地处偏僻环境、受工业污染较少的移栽和野生山莨菪。同时,随着海拔的升高,各种重金属元素含量均减少。
Objective: To determine the content of heavy metal elements in the roots of three kinds of Anisodus samples (ie, the cultivated Anisodus stearithmus, Transplanted Anisodus and Wild Anisodus) in three different habitats. Methods: Determination of elemental lead by atomic fluorescence spectrometry with elemental cadmium, arsenic, mercury and atomic absorption spectrometry. Results: The change of arsenic and mercury in cultivated and transplanted Anisodus rhizomes showed obvious seasonal variation, while the content of cadmium did not show significant seasonal characteristics. There was a positive correlation between the transplanted and wild Anisodus species. Conclusion: Under different habitats, the accumulation of various heavy metal elements in anisodamine root has obvious differences. As the city’s industrial production and transportation develop, the heavy metals that accumulate in the soil and thus enter the roots of cultivated Anisodamis must be more than those in remote locations, transplanted with less industrial pollution and wild Anisodus. At the same time, with the elevation, all kinds of heavy metal elements are reduced.