Detection of phosphorus species in sediments of artificial landscape lakes in China by fractionation and phosphorus-31 nuclear magnetic resonance spectroscopy

Liu, Jinyong; Hui, Wang; Yang, Haijun; Ma, Yixin; Cai, Ouchen

doi:10.1016/j.envpol.2008.07.031

Cited by 72 publications

(45 citation statements)

References 54 publications

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“…Phosphonates appear to be less prevalent in freshwater ecosystems compared to marine systems. [72,[113][114][115][116][117] Biogeochemistry Like phospholipids, little is known about the biogeochemical cycling of phosphonates in aquatic ecosystems. [102] Although often assumed to be recalcitrant, recent molecular studies have shown that a diverse range of freshwater and marine bacteria and phytoplankton have genes associated with the production of hydrolytic enzymes capable of catalysing the breakdown of phosphonates.…”

Section: Phosphonatesmentioning

confidence: 99%

Organic phosphorus in the aquatic environment

Baldwin¹

2013

Environ. Chem.

103

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Environmental context. Organic phosphorus can be one of the major fractions of phosphorus in many aquatic ecosystems. This paper discusses the distribution, cycling and ecological significance of five major classes of organic P in the aquatic environment and discusses several principles to guide organic P research into the future.Abstract. Organic phosphorus can be one of the major fractions of phosphorus in many aquatic ecosystems. Unfortunately, in many studies the 'organic' P fraction is operationally defined. However, there are an increasing number of studies where the organic P species have been structurally characterised -in part because of the adoption of 31 P NMR spectroscopic techniques. There are five classes of organic P species that have been specifically identified in the aquatic environment -nucleic acids, other nucleotides, inositol phosphates, phospholipids and phosphonates. This paper explores the identification, quantification, biogeochemical cycling and ecological significance of these organic P compounds. Based on this analysis, the paper then identifies a number of principles which could guide the research of organic P into the future. There is an ongoing need to develop methods for quickly and accurately identifying and quantifying organic P species in the environment. The types of ecosystems in which organic P dynamics are studied needs to be expanded; flowing waters, floodplains and small wetlands are currently all under-represented in the literature. While enzymatic hydrolysis is an important transformation pathway for the breakdown of organic P, more effort needs to be directed towards studying other potential transformation pathways. Similarly effort should be directed to estimating the rates of transformations, not simply reporting on the concentrations. And finally, further work is needed in elucidating other roles of organic P in the environment other than simply a source of P to aquatic organisms.

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Section: Phosphonatesmentioning

confidence: 99%

Organic phosphorus in the aquatic environment

Baldwin¹

2013

Environ. Chem.

103

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“…, Liu et al 2009 , and the EC of the water were 5,786.6, 1,879.5, 3,177.0, 1,789.0, and 2,855.7 μs cm −1 as the river flow from site 1 to site 5.…”

Section: Sediment and Water Characteristicsmentioning

confidence: 99%

“…Six 31 P-NMR peaks from the NaOH-EDTA extracts were observed. All NMR-spectra showed peaks in the area of phon-P (12 to 23 ppm), ortho-P (6 to 7 ppm), mono-P (4 to 6 ppm), lipids-P (1 to 3 ppm), DNA-P (0 ppm), and pyro-P (−3.5 to −4.5 ppm) (Turner et al 2003a;CadeMenun et al 2006;Liu et al 2009). Phon-P and lipids-P were not detected in sites 2 and 4 and sites 4 and 5, respectively.…”

Section: Phosphorus Fractionation In Sedimentsmentioning

confidence: 99%

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Phosphorus-31 nuclear magnetic resonance assignments of biogenic phosphorus compounds in sediment of an artificial Fuyangxin River, China

Zhang

Shan

Zhang

2013

Environ Sci Pollut Res

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River eutrophication could drastically influence the phosphorus (P) in the water and sediment. To understand the biogenic-P species, distribution and bioconversion, five sediment samples were collected from an artificial river, and analyzed by phosphorus-31 nuclear magnetic resonance ( 31 P-NMR). The P pollution in the water and sediment were both severe. The average concentrations of total P (TP) and solution reactive phosphorus in the water were 3.0 and 2.6 mg L −1 , respectively, which surpass grade Vof the national quality standard (China) and should not be used for any purpose. The river sediments accumulated significant inorganic phosphorus (Pi) and organic phosphorus (Po); in the P fractionation, the rank order of the P fractions was as follows: Ca-P>NaOH-Pi>Res-P>KCl-P>NaOH-Po, with average relative proportions of 25.1:16.8:6.6:1.7:1:0. Six P compounds were detected in the NaOH-EDTA extract by 31 P-NMR. Mono-P (8.96-29.58 %) was the dominant forms of biogenic-P, and other smaller fractions of biogenic-P were also observed, including pyro-P (0.22-0.86 %), DNA-P (0.75-2.03 %), phon-P (0-1.57 %), and lipids-P (0-2.66 %). The TP and biogenic-P decreased along the direction of flows, with their average relative proportions 7.97:1.20:1.49:1.00:1.00 and 40.87:2.34:3.46:1.60:1 from the upstream to downstream, respectively. The concentration and species of Po in NaOH-Po were lower than found in 31 P-NMR analysis in this research. Thus, the use of 0.25 M NaOH and 50 mM EDTA extracts and solution 31 P-NMR analysis was a more accurate method for quantifying biogenic-P in the river sediments than P fractionation.

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“…The sorption data were fitted to the Langmuir equation to calculate the Xm value. Sediment P saturation (SPS) was calculated as the TP:(Xm + TP) ratio (Kopá9 cek et al, 2005;Liu et al, 2009), where SPS = TP/(Xm + TP) Â 100%…”

Section: Phosphorus Sorption Capacity Of Sedimentmentioning

confidence: 99%

Characteristics, distribution and ecological risk assessment of phosphorus in surface sediments from different ecosystems in Eastern China: A 31P-nuclear magnetic resonance study

Zhang

Shan

et al. 2015

Ecological Engineering

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P-NMR ERI Sediment A B S T R A C TSurface sediments in different ecosystems (lake, river, reservoir, estuary and wetland) in Eastern China were extracted with NaOH-EDTA, and the extracts were analyzed by 31 P-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 (R Xm-ERI = 0.89, p < 0.01) and a positive correlation between Xm and OM in the sediment (R Xm-OM = 0.84, p < 0.01) indicated that the chemicalphysical conditions play a vital role in controlling P sorption and desorption.

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Detection of phosphorus species in sediments of artificial landscape lakes in China by fractionation and phosphorus-31 nuclear magnetic resonance spectroscopy

Cited by 72 publications

References 54 publications

Organic phosphorus in the aquatic environment

Organic phosphorus in the aquatic environment

Phosphorus-31 nuclear magnetic resonance assignments of biogenic phosphorus compounds in sediment of an artificial Fuyangxin River, China

Characteristics, distribution and ecological risk assessment of phosphorus in surface sediments from different ecosystems in Eastern China: A 31P-nuclear magnetic resonance study

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