Overestimation of orthophosphate monoesters in lake sediment by solution P-31-NMR analysis
文献类型：期刊论文
| 作者 | Shan, Baoqing; Tang, Wenzhong; Jin, Xin; Zhang, Wenqiang |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2017-11-01 |
| 卷号 | 24期号:32页码:25469-25474 |
| 关键词 | Orthophosphate Monoesters Solution P-31-nmr Orthophosphate Diesters Sediment P-o Phosphorus |
| 英文摘要 | Solution P-31 nuclear magnetic resonance spectroscopy (P-31-NMR) is a useful method for analyzing organic phosphorus (P-o). Unfortunately, the extraction conditions, which are highly alkaline and require long extraction times, make this analysis less effective. In this research, according to the lability of orthophosphate monoesters (mono-P-o) and orthophosphate diesters (diesters-P-o), we verified the hypothesized overestimation of mono-P-o in lake sediment using solution P-31-NMR. We set three scenes to redistribute the mono-P-o and diesters-P-o. Six components, including eight mono-P-o species, were detected in the NaOH-EDTA extracts of sediment samples using P-31-NMR. The results showed that mono-P-o (212.7 mg kg(-1)) was the dominant P-o in the surface sediment. In the three scenes, mono-P-o decreased from 212.7 to 112.0 mg kg(-1), and diesters-P-o increased from 31.9 to 132.7 mg kg(-1). The ratio of mono-P-o to diesters-P-o increased from 6.7 to 0.8. Therefore, we deduced that the concentration of mono-P-o was overestimated, while that of diesters-P-o was underestimated, in most research because of the high pH and long extraction process. Diesters-P-o might be an important labile P source during the P "exhausted" period. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39537]  |
| 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 | Shan, Baoqing,Tang, Wenzhong,Jin, Xin,et al. Overestimation of orthophosphate monoesters in lake sediment by solution P-31-NMR analysis[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(32):25469-25474. |
| APA | Shan, Baoqing,Tang, Wenzhong,Jin, Xin,&Zhang, Wenqiang.(2017).Overestimation of orthophosphate monoesters in lake sediment by solution P-31-NMR analysis.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(32),25469-25474. |
| MLA | Shan, Baoqing,et al."Overestimation of orthophosphate monoesters in lake sediment by solution P-31-NMR analysis".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.32(2017):25469-25474. |
入库方式： OAI收割
来源：生态环境研究中心
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