摘要
本文研究了宝山区菜区蔬菜重金属污染的特点,结果如下:菜区蔬菜六种重金属元素含量一般比背景水平高,蔬菜吸收重金属的能力为:叶菜类>根茎类>茄果类。以代表性蔬菜—青菜为例,与蔬菜评价标准相比较,除铜、锌外,都受到了不同程度的污染,其中以镉的污染最严重。彭浦乡为明显的污染区,庙行乡则基本未受污染。蔬菜中重金属元素含量,叶片要显著超过叶柄。蔬菜中重金属元素含量,除铅、铬外,其它元素与土壤有着一定的相关性,以镉的相关性最好。
The content of 6 kinds of heavy metal elements in vegetables is higher than the background level of vegetables. The ability of absorbing heavy metal elements of vegetables is as follows: leaf vegetables>root tubers>eggplants and fruits. Chinese cabbage is suffered from pollution of heavy metal elements in a different degrees except Cu and Zn, and Cd pollution is critical. The content of heavy metal elements in a leaf is higher than in a petiole. There is the relation between the heavy metal elements of soils and vegetables except Pb and Cr, and Cd element is the best significant.
关键词
蔬菜
重金属
污染
Vegetable
Heavy metal pollution
Chinese cabbage
