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High-resolution characterization of labile phosphorus, iron, and manganese in sediments of different trophic waters in Lake Taihu, China.
Water Sci Technol. 2018 Jan; 77(1-2):286-295.WS

Abstract

High-resolution combined ZrO-Chelex diffusive gradients in thin film (DGT) probes were arranged to synchronously monitor the characteristics of labile phosphorus (P), iron (Fe), and manganese (Mn) in sediments from regions of varying trophic levels in Lake Taihu, China. Results showed that P release was closely related to the lake region's trophic level. Labile P in sediments and the apparent diffusion flux (Fd) of P were higher in hyper-eutrophic algae-dominated regions than those in macrophyte-algae-dominated and macrophyte-dominated regions, indicating that P released from sediments may be facilitated in eutrophic environments. A positive correlation observed between DGT-labile P and Fe or Mn, which had similar regional spatial distributions to P, showed that reductive dissolution of Fe-Mn (oxyhydr)oxides (FeOOH-MnOOH) in sediments was responsible for internal P release, which was strengthened in eutrophic environments. Ratios of labile Fe or Mn/labile P (LFe/LP and LMn/LP) in sediments in algae-dominated regions showed lower values than those in macrophyte-algae-dominated and macrophyte-dominated regions, further confirming that FeOOH-MnOOH in algae-dominated regions were less able to fix P, which brought higher pollution risks for the overlying water. LFe/LP or LMn/LP also had a significantly positive correlation with Fd, further testament that labile Fe or Mn was much more relevant to the sediment P cycle.

Authors+Show Affiliations

Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China E-mail: czyan@iue.ac.cn; University of Chinese Academy of Sciences, Beijing 100049, China.Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China E-mail: czyan@iue.ac.cn; University of Chinese Academy of Sciences, Beijing 100049, China.Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China E-mail: czyan@iue.ac.cn.College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29377814

Citation

Zeng, Liqing, et al. "High-resolution Characterization of Labile Phosphorus, Iron, and Manganese in Sediments of Different Trophic Waters in Lake Taihu, China." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 77, no. 1-2, 2018, pp. 286-295.
Zeng L, Yang F, Yan C, et al. High-resolution characterization of labile phosphorus, iron, and manganese in sediments of different trophic waters in Lake Taihu, China. Water Sci Technol. 2018;77(1-2):286-295.
Zeng, L., Yang, F., Yan, C., & Wang, X. (2018). High-resolution characterization of labile phosphorus, iron, and manganese in sediments of different trophic waters in Lake Taihu, China. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 77(1-2), 286-295. https://doi.org/10.2166/wst.2017.534
Zeng L, et al. High-resolution Characterization of Labile Phosphorus, Iron, and Manganese in Sediments of Different Trophic Waters in Lake Taihu, China. Water Sci Technol. 2018;77(1-2):286-295. PubMed PMID: 29377814.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - High-resolution characterization of labile phosphorus, iron, and manganese in sediments of different trophic waters in Lake Taihu, China. AU - Zeng,Liqing, AU - Yang,Fan, AU - Yan,Changzhou, AU - Wang,Xinhong, PY - 2018/1/30/entrez PY - 2018/1/30/pubmed PY - 2018/4/27/medline SP - 286 EP - 295 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci Technol VL - 77 IS - 1-2 N2 - High-resolution combined ZrO-Chelex diffusive gradients in thin film (DGT) probes were arranged to synchronously monitor the characteristics of labile phosphorus (P), iron (Fe), and manganese (Mn) in sediments from regions of varying trophic levels in Lake Taihu, China. Results showed that P release was closely related to the lake region's trophic level. Labile P in sediments and the apparent diffusion flux (Fd) of P were higher in hyper-eutrophic algae-dominated regions than those in macrophyte-algae-dominated and macrophyte-dominated regions, indicating that P released from sediments may be facilitated in eutrophic environments. A positive correlation observed between DGT-labile P and Fe or Mn, which had similar regional spatial distributions to P, showed that reductive dissolution of Fe-Mn (oxyhydr)oxides (FeOOH-MnOOH) in sediments was responsible for internal P release, which was strengthened in eutrophic environments. Ratios of labile Fe or Mn/labile P (LFe/LP and LMn/LP) in sediments in algae-dominated regions showed lower values than those in macrophyte-algae-dominated and macrophyte-dominated regions, further confirming that FeOOH-MnOOH in algae-dominated regions were less able to fix P, which brought higher pollution risks for the overlying water. LFe/LP or LMn/LP also had a significantly positive correlation with Fd, further testament that labile Fe or Mn was much more relevant to the sediment P cycle. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/29377814/High_resolution_characterization_of_labile_phosphorus_iron_and_manganese_in_sediments_of_different_trophic_waters_in_Lake_Taihu_China_ DB - PRIME DP - Unbound Medicine ER -