%0 Journal Article
%T Comparative Research on Cd Removal from Water by Different Kinds of Seedlings<br>不同作物种苗对水中重金属镉去除的比较研究
%A WANG Yan-yan
%A XU Jing-bo
%A SHENG Lian-xi
%A <br>王燕燕
%A 徐镜波
%A 盛连喜
%J 环境科学
%D 2007
%I 
%X The ecological effects of Cd removal from water and the changes of physiological and biochemical indexes of seedlings of maize, sunflower and castor-oil plant were investigated. The results showed that: (1) With the trial time lasting, Cd content in solution decreased, and the processes of Cd removal for seedlings of each concentration were almost completed in 48h. The removal effects of sunflower and castor-oil plant were better than those of maize at 1mg?L-1 and 2mg?L-1 Cd, whereas the best removal effects at 5mg?L-1 and 10mg?L-1Cd were those of castor-oil plant, followed by maize and sunflower. (2) Root absorbed the most proportion of Cd for all these three kinds of seedlings at every treatment. The ability of Cd accumulation for the three kinds of seedlings could be drawn as follow: sunflower>castor-oil plant >maize. (3) The physiological and biochemical indexes of seedlings exposed to Cd for 72h had changed to different degree compared with control. The root activity and the proline content of sunflower both have significant relations with Cd accumulation, and the plasma membrane permeability and the proline content of castor-oil plant both have significant positive relations with Cd accumulation. Maize, sunflower and castor-oil plant could endure certain concentration of Cd, and the tolerance of sunflower and castor-oil plant are both greater than that of maize through general analysis of Cd accumulation and the changes of physiological and biochemical indexes.
%K Cd
%K removal
%K accumulation
%K physiological and biochemical indexes<br>镉
%K 去除
%K 积累
%K 生理生化指标
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=BC85E858628321E11FF25EC553D49907&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=94C357A881DFC066&sid=54D3D9B69F1CCE77&eid=E1034A3BCFB43055&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=22