水生植物对铜、铅、锌等重金属元素富集作用的评价研究

Assessment of Pollution and Enrichment of Heavy Metals of Cu,Pb,Zn on Aquatic Plants

对调查区域内土壤及植物中的Cu、Pb、Zn等重金属元素进行了测定,并分别进行了评价.所调查的土壤都受到了不同程度的重金属污染,土壤中Cu、Pb、Zn等重金属污染物的含量与人类活动密切相关,人类活动是重金属污染的主要来源.不同植物对重金属的富集有一定的选择性,植物对重金属的富集作用与土壤背景值有一定的相关性,土壤中重金属的背景值越高,植物对重金属的富集量就越高.

A survey on the contents of heavy metals in soils and aquatic plants was conducted to determine and evaluate the contamination of heavy metals in this paper.The investigated areas were contaminated by heavy metals of Cu,Pb,Zn incoordinately,and the content of heavy metals of Cu,Pb,Zn in soils is related to the (human) activities,the main source of pollution of heavy metals.Different plants have different selective enrichment of heavy metals .The enrichment was correlated to the background of heavy metals in soils ,the more concentration of heavy metals in soils ,the more enrichment of heavy metals in aquatic plants.