Organic matter facilitates the binding of Pb to iron oxides in a subtropical contaminated soil
文献类型：期刊论文
| 作者 | Zheng LR(郑黎荣) ; Wan, Dan; Zhang, Nichen; Chen, Wenli; Cai, Peng; Zheng, Lirong; Huang, Qiaoyun
|
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 25期号:32页码:32130-32139 |
| 关键词 | Pb fractionation XAFS Fe oxide-bound organic carbon Soil aging Organic matter Heavy metal |
| ISSN号 | 0944-1344 |
| DOI | 10.1007/s11356-018-3173-x |
| 文献子类 | Article |
| 英文摘要 | The bioavailability and potential uptake of heavy metals by crops is fundamentally influenced by the forms of metals in soils. Organic matter plays an important role in controlling the transformation of heavy metal fractionations in soils. However, long-term effects of organic matter on heavy metal speciation remains highly uncertain. In this study, rice straw was introduced to a subtropical Pb-contaminated soil for 2-year period so as to clarify the redistribution of Pb fractions and their correlations with soil properties. By combining sequential extraction and X-ray absorption fine structure spectroscopy, we find that lead is predominantly presented in Fe oxide-bound, surface adsorbed, and residual fractions in the soil. The incorporation of rice straw can effectively reduce the labile species of Pb by promoting the binding of Pb to iron oxides. Furthermore, aging leads to the transfer of considerable amounts of Pb to the association with Fe oxides and this transformation is enhanced by the presence of organic matter. Organic matter input and soil aging tend to shift Pb to amorphous Fe oxides than crystalline Fe oxides. The correlation analysis shows that Fe oxide fractions play vital roles in controlling the forms of Pb in soil. This study presents the first result regarding the long-term effect of organic matter on the redistribution of Pb in naturally polluted soil, which is useful for understanding the fate of Pb and developing remediation strategies for Pb-polluted soils. |
| 电子版国际标准刊号 | 1614-7499 |
| WOS关键词 | RAY-ABSORPTION SPECTROSCOPY ; HEAVY-METALS ; TRACE-ELEMENTS ; RICE PLANTS ; LEAD ; FRACTIONATION ; SPECIATION ; CHINA ; BIOAVAILABILITY ; AMENDMENTS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000448662700031 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286744]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zheng LR,Wan, Dan,Zhang, Nichen,et al. Organic matter facilitates the binding of Pb to iron oxides in a subtropical contaminated soil[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(32):32130-32139. |
| APA | 郑黎荣.,Wan, Dan.,Zhang, Nichen.,Chen, Wenli.,Cai, Peng.,...&Huang, Qiaoyun.(2018).Organic matter facilitates the binding of Pb to iron oxides in a subtropical contaminated soil.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(32),32130-32139. |
| MLA | 郑黎荣,et al."Organic matter facilitates the binding of Pb to iron oxides in a subtropical contaminated soil".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.32(2018):32130-32139. |
入库方式： OAI收割
来源：高能物理研究所
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