重庆市菜地土壤和蔬菜中Hg、Pb的污染特征及相关性分析

通过对重庆市菜地土壤和蔬菜 Hg、Pb的含量分析 ,发现土壤 Hg含量远远大于背景值 ,并且土壤 Hg的含量与菜地周围的环境密切相关 ;土壤 Pb的含量同背景值相差不大。Hg、Pb在土壤和蔬菜中的污染特征表现为主城区 >近郊区 >远郊区 ;并且不同蔬菜品种中 Hg、Pb的含量差异较大 ,在不同蔬菜种类表现为叶菜类 >果菜类 >根菜类。相关性分析表明同一菜地土壤和蔬菜中 Hg、Pb含量无相关性 ;不同菜地土壤和蔬菜 Hg、Pb含量不具有相关性。

The coherency analysis of heavy metals in soils and vegetables of the vegetable bases of Chongqing

By analyse the content of mercury and lead in soils and vegetables of the vegetable bases of Chongqing We find the content of mercury in soils is higher than the background content, and the content of mercury in soils is close correlation with the around environment The content of lead in soils is matchable with the background content The pollute characteristic of mercury and lead in soils and vegetables is the content of in the city proper is bigger than in outskirts of a city, and it is bigger than in distant of a city And they are different in distinct vegetable breed, and the content of mercury and lead in phylloid vegetables is bigger than in fruit vegetables and in fruit vegetables than in root vegetables The coherency analysis make known they haven't coherency the content of mercury and lead in soils and vegetables in the same vegetable bases The content of mercury and lead in soils and vegetables of the different vegetable bases haven't coherency