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题名: Phosphorus speciation of sediments from lakes of different tropic status in Eastern China
作者: Zhang, Wenqiang; Rong, Nan; Jin, Xin; Li, Jie; Ding, Yuekui; Zhu, Xiaolei; Shan, Baoqing
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期: 2016-04
卷号: 23, 期号:7, 页码:6767-6773
关键词: Phosphorus ; Sediment ; P-31-NMR ; SMT ; Eutrophication
DOI: 10.1007/s11356-015-5521-4
部门归属: 环境水质学国家重点实验室
英文摘要: Information about the chemical composition of phosphorus (P) in sediment is critical for understanding P dynamics and eutrophication in lake ecosystems. Eutrophication as a result of P pollution still persists so we chose to determine the P characteristics of sediments from ten lakes of different trophic status and the relationships between P fractions and environmental factors. The results show that the Standards, Measurements and Testing (SMT) method combined with P-31-nuclear magnetic resonance (P-31-NMR) can efficiently show the P characteristics of sediment. Phosphorus concentrations in sediments decreased as the trophic status of the lake improved. Inorganic P (Pi) was the dominant form of total P (TP) in most of the lake sediments and was mainly comprised of HCl-Pi, a stable Pi fraction. Results of P-31-NMR analysis show that the extracts were dominated by ortho-P (36.4-94.8 %) and mono-P (4.0-36.2 %), with smaller amounts of diester-P (.6-23.1 %), pyro-P (.2-4.4 %), and phon-P (.3-.7 %). Analysis of the relationships between the P composition and the trophic status of the lakes indicated that the bioavailability of P forms has an influence on the surface water trophic conditions and the health of aquatic ecosystems.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36066
Appears in Collections:环境水质学国家重点实验室_期刊论文

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Recommended Citation:
Zhang, Wenqiang,Rong, Nan,Jin, Xin,et al. Phosphorus speciation of sediments from lakes of different tropic status in Eastern China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(7):6767-6773.
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