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| Uptake and Removal Efficiency of Atrazine in Soil by Several Weeds |
| Received:June 15, 2014 |
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| KeyWord:atrazine;contaminated soil;phytoremediation;enrichment characteristics;removal efficiency |
| Author Name | Affiliation | E-mail | | CHEN Jian-jun | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | LI Ming-rui | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | ZHANG Kun | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | LI Yuan | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | liyuan@ynau.edu.cn |
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| Abstract: |
| Atrazine was the most commonly detected herbicide contaminating soil and water. Phytoremediation has been approved to a cost-effective technique. In this study, a pot experiment was carried out to compare the uptake and removal efficiency of atrazine in soil by seven weeds. Enrichment and transfer characteristics of atrazine in plants as well as relationships between the removal efficiency of atrazine and plant biomass, root growth were also investigated. Growing plants profoundly improved the removal efficiency of atrazine from soil. Compared with the control, the highest removal efficiency of atrazine was found in Pennisetum hydridumn with the removal efficiency being increased by 40.37%. The removal efficiency of atrazine was in order of P. hydridum > Saccharum arundinaceum > Lolium perenne L. > Festuca elata > Solanum nigrum L. > Gramineae > C. rotundus, and was significantly positively correlated with plant biomass(r=0.838) and ratio of root to shoot biomass(r=0.866). Seven weed plants did show absorption, enrichment and transfer of atrazine to some extents. The enrichment coefficient and transfer coefficient of P. hydridum was the highest, which were 0.54 and 2.81, respectively, followed by those of S. arundinaceum and F. elata. In sum, P. hydridum, S. arundinaceum and F. elata could be recommended for restoring atrazine contaminated soils. |
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