Overestimation of orthophosphate monoesters in lake sediment by solution P-31-NMR analysis

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Overestimation of orthophosphate monoesters in lake sediment by solution P-31-NMR analysis
	Shan, Baoqing; Tang, Wenzhong; Jin, Xin; Zhang, Wenqiang
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	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.
内容类型	期刊论文
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.