Characteristics, distribution and ecological risk assessment of phosphorus in surface sediments from different ecosystems in Eastern China: A P-31-nuclear magnetic resonance study
文献类型：期刊论文
| 作者 | Zhang, Wenqiang; Shan, Baoqing; Li, Jie; Tang, Wenzhong; Jin, Xin; Zhang, Hong; Ding, Yuekui; Wang, Yuanyue; Zhu, Xiaolei |
| 刊名 | ECOLOGICAL ENGINEERING
 |
| 出版日期 | 2015-02 |
| 卷号 | 75期号:0页码:264-271 |
| 关键词 | Phosphorus Eutrophication P-31-NMR ERI Sediment |
| 英文摘要 | Surface sediments in different ecosystems (lake, river, reservoir, estuary and wetland) in Eastern China were extracted with NaOH-EDTA, and the extracts were analyzed by P-31-NMR to reveal the phosphorus (P) species distribution. The P release risk was also assessed by sorption experiments. The river sediments accumulated significant amounts of P compared with other sediments. The organic phosphorus (Po) concentration in the estuarine sediment was lower than that in other sediments. Two P compounds classes (phon-P and mono-P) and five P compounds were detected in the sediments. Ortho-P (83.3-97.6%) was the dominant P compounds and mono-P (1.1-18.0%) were the dominant Po compounds classes, while smaller amounts of DNA-P (0-4.1%), pyro-P (0-4.0%) and lipid-P (0-0.8%) were found in the surface sediment. Poly-P and phon-P were detected only in site 11 (wetland), site 10 (wetland) and 11, respectively. The ERI values, as a measure of eutrophication risk, were different in the various sediments, being greater than 25% in sites 1 (river), 3 (estuary) and 4 (estuary), and with values of 26, 59 and 83%, respectively. The Xm and ERI values fitted a power function (RXm-ERI = 0.89, p<0.01) and a positive correlation between Xm and OM in the sediment (RXm-OM = 0.84, p<0.01) indicated that the chemical-physical conditions play a vital role in controlling P sorption and desorption. (C) 2014 Elsevier B.V. All rights reserved. |
| 研究领域[WOS] | Ecology ; Engineering, Environmental ; Environmental Sciences |
| WOS记录号 | WOS:000349598200034 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32737]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Wenqiang,Shan, Baoqing,Li, Jie,et al. Characteristics, distribution and ecological risk assessment of phosphorus in surface sediments from different ecosystems in Eastern China: A P-31-nuclear magnetic resonance study[J]. ECOLOGICAL ENGINEERING,2015,75(0):264-271. |
| APA | Zhang, Wenqiang.,Shan, Baoqing.,Li, Jie.,Tang, Wenzhong.,Jin, Xin.,...&Zhu, Xiaolei.(2015).Characteristics, distribution and ecological risk assessment of phosphorus in surface sediments from different ecosystems in Eastern China: A P-31-nuclear magnetic resonance study.ECOLOGICAL ENGINEERING,75(0),264-271. |
| MLA | Zhang, Wenqiang,et al."Characteristics, distribution and ecological risk assessment of phosphorus in surface sediments from different ecosystems in Eastern China: A P-31-nuclear magnetic resonance study".ECOLOGICAL ENGINEERING 75.0(2015):264-271. |
入库方式： OAI收割
来源：生态环境研究中心
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