| Cu2+、pb2+、Zn2+在狗牙根中的迁移模拟研究 |
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| 引用本文： | 陈明君,傅杨武,周群英.Cu2+、pb2+、Zn2+在狗牙根中的迁移模拟研究[J].广东农业科学,2011,38(4):136-138. |
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| 作者姓名： | 陈明君 傅杨武 周群英 |
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| 作者单位： | 重庆三峡学院化学与环境工程学院,重庆,404000 |
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| 基金项目： | 重庆市自然科学基金(CSTC.2005EA7037); 重庆市万州区自然科学基金(计[2005]3号) |
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| 摘 要： | 以模拟江水—狗牙根构成的有机体系为研究对象,通过动态模拟试验,研究了外源重金属Cu2+、Pb2+、Zn2+单一及复合处理时对狗牙根生长及重金属在狗牙根中的富集迁移情况。研究结果表明:低浓度的Cu2+、Pb2+、Zn2+对狗牙根生长有利,较高浓度时对其生长有抑制作用;复合处理表明,在狗牙根的生长方面,Cu2+与Pb2+、Zn2+之间存在协同作用,Pb2+、Zn2+之间存在拮抗作用;狗牙根主要通过根、茎富集重金属离子,随着处理浓度的增加,迁移富集量逐渐增大,狗牙根中重金属离子的迁移能力表现为Pb2+>Zn2+>Cu2+,迁移富集量根>茎;重金属在狗牙根中的迁移富集过程中,Cu2+对Pb2+、Zn2+,Pb2+、Zn2+相互之间存在拮抗作用;狗牙根能明显降低江水中的Cu2+、Pb2+、Zn2+的含量,是环境修复优良物种。
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| 关 键 词： | 重金属 狗牙根 离子迁移 模拟研究 |
Simulated experimental research on migration behaviors of heavy metal Cu2+, Pb2+, Zn2+in Cynodon dactylon |
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| CHEN Ming-jun,FU Yang-wu,ZHOU Qun-ying.Simulated experimental research on migration behaviors of heavy metal Cu2+, Pb2+, Zn2+in Cynodon dactylon[J].Guangdong Agricultural Sciences,2011,38(4):136-138. |
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| Authors: | CHEN Ming-jun FU Yang-wu ZHOU Qun-ying |
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| Institution: | CHEN Ming-jun,FU Yang-wu,ZHOU Qun-ying (College of Chemical and Environmental Engineering,Chongqing Three Gorges University,Chongqing 404000,China) |
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| Abstract: | The water-cynodon dactylon system was taken as key object in this study.The enrichment and transportation behavior of Cu2+,Pb2+,and Zn2+ in Cynodon dactylon were investigated by use of the dynamic simulation experiment,and the effect of combined contamination of Cu2+-Pb2+-Zn2+ on the growth of Cynodon dactylon was also studied in detail.The results showed that the low contaminations of Cu2+,Pb2+,and Zn2+ were favorable to the growth of Cynodon dactylon,but the high contaminations had a growth-inhibition eff... |
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| Keywords: | heavy metal Cynodon dactylon ion mobility simulation research |
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