Influence of amendments on soil arsenic fractionation and phytoavailability by Pteris vittata L
文献类型：SCI/SSCI论文
| 作者 | Zhang M. |
| 发表日期 | 2012 |
| 关键词 | Arsenic Amendment Phytoavailability Pteris vittata L. Enzyme activity contaminated soils hyperaccumulator accumulation phytoremediation fertilizers crops china pb |
| 英文摘要 | Increasing availability of soil arsenic is of significance for accelerating phytoremediation efficiency of As-polluted sites. The effects of seven amendments, i.e., citrate, oxalate. EDTA, sodium polyacrylate (SPA), phosphate rock (PR), single superphosphate (SSP), and compost on fractionation and phytoavailability of soil As were investigated in lab culture experiment. The results showed that the addition of PR, SPA, EDTA or compost to soils significantly increased the concentration of NaHCO3-extractable As over a 120 d incubation period compared with the control (amendment-free) soil. Then, the four amendments were selected to add to As-contaminated soil growing Pteris vittata. It was concluded that As accumulation by the fern increased significantly under the treatments of PR and SPA by 25% and 31%, respectively. For As fractionation in soil. SPA increased Fe-As significantly by 51% and PR increased Ca-As significantly by 18%, while both the two amendments reduced occluded-As by 16% and 19%, respectively. Adding PR and SPA in soil increased the activities of urease and neutral phosphatase resulting from the improvement the fertility and physical structure of the soil, which benefits plant growth and As absorption of P. vittata. The results of the research revealed that both PR and SPA were effective amendments for improving phytoremediation of As-contaminated sites by P. vittata. (C) 2012 Elsevier Ltd. All rights reserved. |
| 出处 | Chemosphere |
| 卷 | 88 |
| 期 | 2 |
| 页 | 240-244 |
| 收录类别 | SCI |
| ISSN号 | 0045-6535 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26726]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang M.. Influence of amendments on soil arsenic fractionation and phytoavailability by Pteris vittata L. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。