Phosphorus release in response to pH variation in the lake sediments with different ratios of iron-bound P to calcium-bound P
文献类型：期刊论文
| 作者 | Huang, QH; Wang, ZJ; Wang, CX; Wang, SR; Jin, XC |
| 刊名 | CHEMICAL SPECIATION AND BIOAVAILABILITY
 |
| 出版日期 | 2005 |
| 卷号 | 17期号:2页码:55-61 |
| 关键词 | phosphorus speciation sediment/water interface mobilization risk assessment |
| 英文摘要 | Phosphorus released from the sediment may render lakes eutrophic under appropriate pH and redox conditions. Phosphorus speciation in lake sediments was investigated by a Standard Measurements and Testing (SMT) protocol in three shallow lakes: Taihu Lake, Chaohu Lake and Longganhu Lake in the middle and lower reaches of the Yangtze River in China. Twelve lake sediment samples with different ratios of iron-bound phosphorus (Fe-P) content to calcium-bound phosphorus (Ca-P) content were collected and exposed to various pH conditions. These sediment samples showed different patterns of P release responding to pH variations under an oxic condition. The sediments with Fe-P/Ca-P ratios less than 0.5 released more phosphorus under acidic conditions, while the sediments of higher Fe-P/Ca-P ratios released more phosphorus under alkaline conditions. The various patterns of phosphorus release from these lake sediments are dependent on the concentrations of the reactive AI and Fe forms and organic matter, which mainly contribute to the different Fe-P/Ca-P ratios. Therefore, a ratio of Fe-P content to Ca-P content in the sediment might be regarded as a simple index for the risk assessment of acidity-related or alkalinity-related release of phosphorus. |
| 学科主题 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Toxicology |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Toxicology |
| WOS记录号 | WOS:000231256600004 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23302]  |
| 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 | Huang, QH,Wang, ZJ,Wang, CX,et al. Phosphorus release in response to pH variation in the lake sediments with different ratios of iron-bound P to calcium-bound P[J]. CHEMICAL SPECIATION AND BIOAVAILABILITY,2005,17(2):55-61. |
| APA | Huang, QH,Wang, ZJ,Wang, CX,Wang, SR,&Jin, XC.(2005).Phosphorus release in response to pH variation in the lake sediments with different ratios of iron-bound P to calcium-bound P.CHEMICAL SPECIATION AND BIOAVAILABILITY,17(2),55-61. |
| MLA | Huang, QH,et al."Phosphorus release in response to pH variation in the lake sediments with different ratios of iron-bound P to calcium-bound P".CHEMICAL SPECIATION AND BIOAVAILABILITY 17.2(2005):55-61. |
入库方式： OAI收割
来源：生态环境研究中心
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