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Characteristics of phosphorus components in surface sediments from a Chinese shallow eutrophic lake (Lake Taihu): new insights from chemical extraction and 31P NMR spectroscopy.
Environ Sci Pollut Res Int. 2017 Oct; 24(30):23518-23527.ES

Abstract

As a primary factor responsible for lake eutrophication, a deeper understanding of the phosphorus (P) composition and its turnover in sediment is urgently needed. In this study, P species in surface sediments from a Chinese large eutrophic lake (Lake Taihu) were characterized by traditional fractionation and 31P nuclear magnetic resonance (NMR) spectroscopy, and their contributions to the overlying water were also discussed. Fractionation results show that NaOH-P predominated in the algal-dominated zone, accounting for 60.1% to total P in Zhushan Bay. Whereas, refractory fractions including HCl-P and residual-P were the main P burial phases in the macrophyte-dominated zone, the center and lakeshore. Recovery rates of the total P and organic P were greatly improved by using a modified single-step extraction of NaOH-EDTA, ranging from 22.6 to 66.1% and from 15.0 to 54.0%. Ortho-P, monoester-P, and pyro-P are identified as the major P components in the NaOH-EDTA extracts by 31P NMR analysis. Trace amount of DNA-P appeared only in sediments from algal- and macrophyte-dominated zones, ascribing to its biological origin. The relative content of ortho-P is the highest in the algal-dominated zone, while the biogenic P including ester-P and pyro-P is the highest in the macrophyte-dominated zone. Moreover, ortho-P and pyro-P correlated positively with TP and chlorophyll a in the overlying water, whereas only significant relationships were found between monoester-P, biogenic P, and chlorophyll a. These discrepancies imply that inorganic P, mainly ortho-P, plays a vital role in sustaining the trophic level of water body and algal bloom, while biogenic P makes a minor contribution to phytoplankton growth. This conclusion was supported by the results of high proportion of biogenic P in algae, aquatic macrophytes, and suspended particulate from the published literature. This study has significant implication for better understanding of the biogeochemical cycling of endogenous P and its role in affecting lake eutrophication.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Zhang R
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China. zhangrunyu@vip.gyig.ac.cn.
Chen J
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
Wang L
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
Wu F
State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.

MeSH

ChinaEnvironmental MonitoringEutrophicationGeologic SedimentsLakesPhosphorusWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28849544

Citation

Zhang, Runyu, et al. "Characteristics of Phosphorus Components in Surface Sediments From a Chinese Shallow Eutrophic Lake (Lake Taihu): New Insights From Chemical Extraction and 31P NMR Spectroscopy." Environmental Science and Pollution Research International, vol. 24, no. 30, 2017, pp. 23518-23527.
Zhang R, Chen J, Wang L, et al. Characteristics of phosphorus components in surface sediments from a Chinese shallow eutrophic lake (Lake Taihu): new insights from chemical extraction and 31P NMR spectroscopy. Environ Sci Pollut Res Int. 2017;24(30):23518-23527.
Zhang, R., Chen, J., Wang, L., & Wu, F. (2017). Characteristics of phosphorus components in surface sediments from a Chinese shallow eutrophic lake (Lake Taihu): new insights from chemical extraction and 31P NMR spectroscopy. Environmental Science and Pollution Research International, 24(30), 23518-23527. https://doi.org/10.1007/s11356-017-9996-z
Zhang R, et al. Characteristics of Phosphorus Components in Surface Sediments From a Chinese Shallow Eutrophic Lake (Lake Taihu): New Insights From Chemical Extraction and 31P NMR Spectroscopy. Environ Sci Pollut Res Int. 2017;24(30):23518-23527. PubMed PMID: 28849544.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characteristics of phosphorus components in surface sediments from a Chinese shallow eutrophic lake (Lake Taihu): new insights from chemical extraction and 31P NMR spectroscopy. AU - Zhang,Runyu, AU - Chen,Jingan, AU - Wang,Liying, AU - Wu,Fengchang, Y1 - 2017/08/28/ PY - 2017/04/05/received PY - 2017/08/22/accepted PY - 2017/8/30/pubmed PY - 2018/8/31/medline PY - 2017/8/30/entrez KW - 31P NMR KW - Biogenic phosphorus KW - Eutrophication KW - Fractionation KW - Sediment SP - 23518 EP - 23527 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 24 IS - 30 N2 - As a primary factor responsible for lake eutrophication, a deeper understanding of the phosphorus (P) composition and its turnover in sediment is urgently needed. In this study, P species in surface sediments from a Chinese large eutrophic lake (Lake Taihu) were characterized by traditional fractionation and 31P nuclear magnetic resonance (NMR) spectroscopy, and their contributions to the overlying water were also discussed. Fractionation results show that NaOH-P predominated in the algal-dominated zone, accounting for 60.1% to total P in Zhushan Bay. Whereas, refractory fractions including HCl-P and residual-P were the main P burial phases in the macrophyte-dominated zone, the center and lakeshore. Recovery rates of the total P and organic P were greatly improved by using a modified single-step extraction of NaOH-EDTA, ranging from 22.6 to 66.1% and from 15.0 to 54.0%. Ortho-P, monoester-P, and pyro-P are identified as the major P components in the NaOH-EDTA extracts by 31P NMR analysis. Trace amount of DNA-P appeared only in sediments from algal- and macrophyte-dominated zones, ascribing to its biological origin. The relative content of ortho-P is the highest in the algal-dominated zone, while the biogenic P including ester-P and pyro-P is the highest in the macrophyte-dominated zone. Moreover, ortho-P and pyro-P correlated positively with TP and chlorophyll a in the overlying water, whereas only significant relationships were found between monoester-P, biogenic P, and chlorophyll a. These discrepancies imply that inorganic P, mainly ortho-P, plays a vital role in sustaining the trophic level of water body and algal bloom, while biogenic P makes a minor contribution to phytoplankton growth. This conclusion was supported by the results of high proportion of biogenic P in algae, aquatic macrophytes, and suspended particulate from the published literature. This study has significant implication for better understanding of the biogeochemical cycling of endogenous P and its role in affecting lake eutrophication. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/28849544/Characteristics_of_phosphorus_components_in_surface_sediments_from_a_Chinese_shallow_eutrophic_lake__Lake_Taihu_:_new_insights_from_chemical_extraction_and_31P_NMR_spectroscopy_ DB - PRIME DP - Unbound Medicine ER -