金属冶炼厂区附近土壤和果树重金属元素含量分析

[目的]了解金属冶炼厂排放的粉尘和废气对周边环境土壤、果树生长的影响，为该地区农业发展提供新的科学依据。[方法]采用火焰原子吸收光谱法测定土壤、果树叶片中Fe、Mn、Pb、Zn、Bi、Cu和cd的含量。I结果l厂区附近果园土壤中金属元素含量大小顺序为Fe〉Mn〉Pb〉Zn〉Bi〉Cu〉CA，对照区果园土壤中的金属元素含量大小顺序与厂区附近果园土壤的顺序一致；厂区附近果园枇杷和石榴叶片中重金属元素含量大小顺序为Fe〉Pb〉Mn〉Zn〉Cu〉Bi〉CA，对照区果园枇杷和石榴叶片中重金属元素含量大小顺序为Fe〉Mn〉Pb〉Zn〉Cu〉B．〉Cd。[结论]厂区附近石榴和枇杷园土壤中和叶片中的重金属元素含量高于对照区；枇杷和石榴叶片中金属元素的含量与土壤中金属元素含量大小呈正相关；枇杷和石榴叶对Pb的吸收能力大于Mn。

Content Analysis of Heavy Metal Elements in the Surrounding Soil of Metal Smelting Plant and Fruit Tree

[Objective] The research aimed to understand the effects of discharged dust and exhaust gas from metal smelting plant on the surrounding soil and the growth of fruit tree and provide new scientific basis for the agricultural development in this area.[Method] Using flame atomic absorption spectrometry,the contents of Fe,Mn,Pb,Zn,Bi,Cu and Cd in the soil and the fruit tree leaves were determined.[Result] The content order of heavy metal elements in the orchard soil around the plant area was as follows: Fe>Mn>Pb>Zn>Cu>Bi>Cd,which was accordant with the content order of heavy metal elements in the orchard soil in control area. The content order of heavy metal elements in the leaves of loquat and megranate in the orchard garden around the plant area was as follows: Fe>Pb>Mn>Zn>Cu>Bi>Cd.The content order of heavy metal elements in the leaves of loquat and megranate in the orchard garden in control area was as follows: Fe>Mn>Pb>Zn>Cu>Bi>Cd.[Conclusion] The content of heavy metals in the soil and leaves in the loquat and megranate garden around the plant area was higher than that in the control area.The content of heavy metals in the leaves of loquat and megranate had a positive correlation with the content of heavy metals in the soil.The absorption capability of loquat and megranate leaves to Pb was higher than Mn.