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Ma Y, Liu T, Zhang BT, Liu Y, Shao P, Sun C, Zhang Y, Bi J, Dong Y, Wang S, Zhang G. Spatial-temporal distributions and influential factors of phthalate acid esters in sediments of three lakes in Inner Mongolia. Environ Sci Pollut Res Int 2022; 29:32800-32812. [PMID: 35022980 DOI: 10.1007/s11356-022-18585-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
The spatiotemporal distributions, influential factors, and ecological risks of 15 phthalate acid esters (PAEs) in the sediments of three typical lakes in Inner Mongolia were investigated in this work. PAEs were widespread in all surface sediments ranging from 598.3 to 3873.8 μg/kg dry weight. Average PAE concentrations were highest in the surface sediments of Wuliangsuhai Lake followed by Daihai and Hulun Lakes, which were consistent with population density and intensity of anthropogenic activities. Dibutyl phthalate, di-iso-butyl phthalate (DIBP), and diethyl phthalate (DEP) were the dominant PAEs with similar abundance orders for the three lakes. The cold climate could explain the higher DEP abundance in the sediments of lakes at higher latitudes. The highest Σ PAE and most individual PAE concentrations were located at one of the discharge river estuaries because most PAEs were terrestrial pollutants. Σ PAE concentrations in the core sediments increased with years and fluctuations owing to the increasing PAE usage and input. The second highest PAE concentration peaks were associated with the high gross domestic product growth rates in 2003-2008. Redundancy analysis revealed that butyl benzyl phthalate and diamyl phthalate in the surface sediments of Hulun Lake were principally positively influenced by organic matter (65.6% contribution among geochemical variables), Fe oxides (25.1% contribution among metals), and Mn oxides (23.8% contribution among metals). The DIBP and DEP exhibited high risks to sensitive fish according to a risk quotient assessment. This work presents new insights into PAE status and deposition mechanisms in the lakes within high latitudes or cold climates, and provides important information for future environmental protection and management.
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Affiliation(s)
- Yan Ma
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Tong Liu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
| | - Bo-Tao Zhang
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China.
| | - Yan Liu
- Beijing Engineering Research Center of Food Safety Analysis, Beijing Center for Physical and Chemical Analysis, Beijing, 100089, China
| | - Peng Shao
- Beijing Engineering Research Center of Food Safety Analysis, Beijing Center for Physical and Chemical Analysis, Beijing, 100089, China
| | - Chen Sun
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
| | - Yichen Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Jiale Bi
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Yunkai Dong
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Shengrui Wang
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
| | - Guoming Zhang
- Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing, 100875, China
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Li H, Wang J, Zhao B, Gao M, Shi W, Zhou H, Xie Z, Zhou B, Lü C, He J. The role of major functional groups: Multi-evidence from the binding experiments of heavy metals on natural fulvic acids extracted from lake sediments. Ecotoxicol Environ Saf 2018; 162:514-520. [PMID: 30015198 DOI: 10.1016/j.ecoenv.2018.07.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/08/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
Fulvic acid (FA) plays a key role in governing the environmental geochemistry behavior of heavy metals. In this work, the roles of major functional groups were investigated based on binding experiments of heavy metals on natural FA extracted from lake sediments. The results showed that the adsorption capacities were ranked as Cu2+ > Pb2+ >Cd2+. The differences of peak area at 3412, 1713, 617and 2430 cm-1 pre- and post-binding reactions in FTIR spectra suggested that phenolic, carboxyl and nitrogen-containing groups were the major functional groups providing sites binding heavy metals. Moreover, the results of bi-Langmuir model and the ionic strength effects jointly indicated that electrostatic attraction was the key mechanism during the adsorption process. The fitted results of Ligand-binding model suggested that the major functional groups in FA were classified into two types binding sites: weak (i.e. phenolic and carboxyl groups) and strong binding sites (i.e. nitrogen-containing groups). Additionally, there might be p-benzoquinone-like formed in FA which were then reduced to hydroquinone during the adsorption process, corresponding to the changing of peak area at 1614 and 830 cm-1 in FTIR spectra, the occurrence of Peak C in Fluorescence excitation-emission matrix (EEM) spectra and the ratios of H/C (<1) and O/C (≈1). The organic matter in sediments from Lake Wuliangsuhai presented similar characteristics with terrestrial plants due to the lake characterized by Phragmites australis and Potamogeton pectinatus L. being the dominant species, which shared large proportions of woody tissues as well as waxy hydrocarbons resembling that of terrestrial plants. This work is useful to insight the environmental effects of FA on heavy metals in environment.
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Affiliation(s)
- Hao Li
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Jinghua Wang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Boyi Zhao
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Manshu Gao
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Wenjing Shi
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Haijun Zhou
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; Environmental Monitoring Center of Inner Mongolia, Hohhot 010011, China
| | - Zhilei Xie
- Environmental Monitoring Center of Inner Mongolia, Hohhot 010011, China
| | - Bin Zhou
- Tianjin Academy of Environmental Sciences, Tianjin 300191, China
| | - Changwei Lü
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Hohhot 010021, China.
| | - Jiang He
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Hohhot 010021, China.
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3
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Shi W, Lü C, He J, En H, Gao M, Zhao B, Zhou B, Zhou H, Liu H, Zhang Y. Nature differences of humic acids fractions induced by extracted sequence as explanatory factors for binding characteristics of heavy metals. Ecotoxicol Environ Saf 2018; 154:59-68. [PMID: 29454987 DOI: 10.1016/j.ecoenv.2018.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 02/01/2018] [Accepted: 02/02/2018] [Indexed: 06/08/2023]
Abstract
The composition and structure of Humic acid (HA) is so heterogeneous that it brings significant barriers to investigate the interaction between HA and heavy metal ions. The isolation of HA with relatively homogeneity is a key to reveal the binding mechanisms between HA and heavy metals. In this work, ten HA fractions (HAs) were obtained by sequential alkali extraction procedure and nature differences of the extracted HAs were considered as explanatory factors for binding characteristics of Cu2+, Pb2+ and Cd2+. The results indicate that more large molecular weight (MW) HA subunits, less carboxyl and phenolic group contents, weaker aromaticity and polarity were measured with increasing extractions, inducing weaker binding capacity of HAs. Ligand binding and bi-Langmuir models indicated that the sorption capacity and binding affinity of earlier extracted HAs were higher than the latter ones. The peak area changes at 3427, 1599, and 619 cm-1 pre- and post-adsorption in FTIR spectra suggested carboxyl, phenolic and nitrogen-containing groups were involved in the adsorption process. At the same time, the peak area difference between HAs and HAs-metal (ΔS) of phenolic groups were 8.22-20.50, 6.81-21.11 and 10.66-19.80% for Cu2+, Pb2+ and Cd2+, respectively, ΔS of carboxyl groups 6.64-17.03, 8.96-16.82 and 9.45-17.85% for Cu2+, Pb2+ and Cd2+, respectively, ΔS of nitrogen-containing groups 0.33-0.48, 0.20-1.38 and 0.31-0.59% for Cu2+, Pb2+ and Cd2+, respectively. ΔS of phenolic and carboxyl groups were larger than those of nitrogen-containing groups, implying that these two groups were the predominant binding sites suppliers for metal ions, which were also supported by the results of correlation analysis. This work is helpful to insight the environmental impacts of natural organic matter and the fate of heavy metals in natural environment.
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Affiliation(s)
- Wenjing Shi
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Changwei Lü
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Hohhot 010021, China.
| | - Jiang He
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Hohhot 010021, China.
| | - He En
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Manshu Gao
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Boyi Zhao
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Bin Zhou
- Tianjin Academy of Environmental Sciences, Tianjin 300191, China
| | - Haijun Zhou
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Hualin Liu
- Institute of Water Research for Pastoral Area, Ministry of Water Resources, Hohhot 010020, China
| | - Yu Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010010, China
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Lü C, He J, Wang B. Spatial and historical distribution of organic phosphorus driven by environment conditions in lake sediments. J Environ Sci (China) 2018; 64:32-41. [PMID: 29478654 DOI: 10.1016/j.jes.2017.01.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 12/10/2016] [Accepted: 01/09/2017] [Indexed: 06/08/2023]
Abstract
The chemistry of sedimentary organic phosphorus (OP) and its fraction distribution in sediments are greatly influenced by environmental conditions such as terrestrial inputs and runoffs. The linkage of OP with environmental conditions was analyzed on the basis of OP spatial and historical distributions in lake sediments. The redundancy analysis and OP spatial distribution results suggested that both NaOH-OP (OP extracted by NaOH) and Re-OP (residual OP) in surface sediments from the selected 13 lakes reflected the gradient effects of environmental conditions and the autochthonous and/or allochthonous inputs driven by latitude zonality in China. The lake level and salinity of Lake Hulun and the runoff and precipitation of its drainage basin were reconstructed on the basis of the geochemistry index. This work showed that a gradient in weather conditions presented by the latitude zonality in China impacts the OP accumulation through multiple drivers and in many ways. The drivers are mainly precipitation and temperature, governing organic matter (OM) production, degradation rate and transportation in the watershed. Over a long temporal dimension (4000years), the vertical distributions of Re-OP and NaOH-OP based on a dated sediment profile from HLH were largely regulated by the autochthonous and/or allochthonous inputs, which depended on the environmental and climate conditions and anthropogenic activities in the drainage basin. This work provides useful environmental geochemistry information to understand the inherent linkage of OP fractionation with environmental conditions and lake evolution.
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Affiliation(s)
- Changwei Lü
- School of Ecology and Environment, Inner Mongolia University, Huhhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Huhhot 010021, China.
| | - Jiang He
- School of Ecology and Environment, Inner Mongolia University, Huhhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Huhhot 010021, China.
| | - Bing Wang
- Forestry College, Inner Mongolia Agricultural University, Huhhot 010019, China
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Wu P, Gao C, Chen F, Yu S. Response of organic carbon burial to trophic level changes in a shallow eutrophic lake in SE China. J Environ Sci (China) 2016; 46:220-228. [PMID: 27521954 DOI: 10.1016/j.jes.2016.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 03/01/2016] [Accepted: 05/09/2016] [Indexed: 06/06/2023]
Abstract
Lakes are an important component of terrestrial carbon cycling. As the trend of eutrophication in many lakes continues, the mechanisms of organic carbon (OC) burial remain unclear. This paper aims to understand the distribution of OC and the effect of trophic level changes on OC burial in Chaohu Lake, a shallow eutrophic lake located in the lower reaches of the Yangtze River, SE China. Two hundred and one surface sediment samples (0-20cm) and 53 subsurface samples (150-200cm) from the lake were collected. The OC accumulation rates (OCARs) are relatively low, with an average of 10.01g/m(2)/year in the surface sediments. The spatial distribution of the OCARs is similar to that of allochthonous OC. The difference in total phosphate (TP) content between the surface and subsurface sediments (ΔTP) is significantly correlated with the autochthonous OC, suggesting that TP loading is a critical limiting nutrient for the lake's primary productivity. It is concluded that allochthonous OC is the dominant source of total OC in surface sediments compared to autochthonous OC. The primary productivity of Lake Chaohu increased due to increasing nutrient loading. However, the autochthonous OC contributed 11% of the total OC in the surface sediments. This could be ascribed to strong mineralization in the water column or surface sediments.
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Affiliation(s)
- Pengbao Wu
- School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China
| | - Chao Gao
- School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China.
| | - Furong Chen
- Anhui Geological Survey, Hefei 230022, China
| | - Shiyong Yu
- Large Lakes Observatory, University of Minnesota Duluth, MN 55812, USA
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Lü C, Wang B, He J, Vogt RD, Zhou B, Guan R, Zuo L, Wang W, Xie Z, Wang J, Yan D. Responses of Organic Phosphorus Fractionation to Environmental Conditions and Lake Evolution. Environ Sci Technol 2016; 50:5007-5016. [PMID: 27104794 DOI: 10.1021/acs.est.5b05057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Geochemical fractionation is used to assess the significance of environmental factors on organic phosphorus (OP) pools in sediments. Labile, moderately labile, and nonlabile OP pools in the sediments from Lake Hulun, Inner Mongolia, were fractionated, and their responses to environmental conditions and lake evolution were investigated based on the spatial and vertical distribution of OP fractionations. In light of the recalcitrant characteristics of organic matter (OM) in different environmental conditions, the pH presents significant negative effects on the amount of labile OP, while water depth shows an important role in regulating the distribution between the moderately labile and nonlabile OP pools. A latitudinal zonation in the distribution of OP pools in surface sediments from different lakes was apparent with this zonation likely linked to the gradient effects of climate and anthropogenic activities on OM decomposition and thereby on the sediments capacity to hold phosphorus. These results show that OM plays a role in governing the impacts of weather and environmental factors on OP fractionation in aquatic environments. This work suggests that OP pools in the sediment core could be used as an archive for environmental conditions and lake evolution.
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Affiliation(s)
- Changwei Lü
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
- Institute of Environmental Geology, Inner Mongolia University , Huhhot 010021, China
- Department of Chemistry, University of Oslo , N-0315, Oslo, Norway
| | - Bing Wang
- Forestry College, Inner Mongolia Agricultural University , Huhhot 010019, China
| | - Jiang He
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
- Institute of Environmental Geology, Inner Mongolia University , Huhhot 010021, China
| | - Rolf D Vogt
- Department of Chemistry, University of Oslo , N-0315, Oslo, Norway
| | - Bin Zhou
- Department of Chemistry, University of Oslo , N-0315, Oslo, Norway
- Tianjin Academy of Environmental Sciences , Tianjin, 300191, China
| | - Rui Guan
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
| | - Le Zuo
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
| | - Weiying Wang
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
| | - Zhilei Xie
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
| | - Jinghua Wang
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
| | - Daohao Yan
- College of Environment and Resources, Inner Mongolia University , Huhhot 010021, China
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Lü C, He J, Zuo L, Vogt RD, Zhu L, Zhou B, Mohr CW, Guan R, Wang W, Yan D. Processes and their explanatory factors governing distribution of organic phosphorous pools in lake sediments. Chemosphere 2016; 145:125-134. [PMID: 26688248 DOI: 10.1016/j.chemosphere.2015.11.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 10/31/2015] [Accepted: 11/12/2015] [Indexed: 06/05/2023]
Abstract
The amount of organic phosphorus (OP) and its distribution among different pools in lake sediments depends on biotic and abiotic processes driving the OP fractionation. Key environmental factors governing these transformations processes between OP fractionations in sediments were studied on the basis of geochemical characteristics of OP pools in relation to environmental factors in the sediments. The results illustrate that the factors influencing the accumulation or depletion of different OP pools were intrinsically dependent on the composition of the deposited organic matter (OM). During the mineralization of the OM the microorganisms excrete the enzyme alkaline phosphatase, accelerating the OP hydrolysis, and thereby setting the grounds for the bacterially-mediated oxidation of OM. There are two main degradation products of the labile OP pool (LOP) and the moderately labile OP pool (MLOP): Either the OP is transformed to a dissolved organic or inorganic P form, and thereby released to water column, or OP is transformed to a non-labile OP pool and stored in the sediments. A comparative study showed that oxy-hydroxides of iron (Fe) and aluminum (Al) only played an important role in influencing OP fractionation in Lake Wuliangsuhai, while the complexation reactions of OP with calcium ions and sorption to its minerals are key factors governing the OP fractionation in the two alkaline lakes. It is worth noting that a significant correlation between the Fe-P pool and the pools of LOP and MLOP indicates that the degradation of the rather labile OP pools are highly dependent on the iron redox reaction.
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Affiliation(s)
- Changwei Lü
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Huhhot 010021, China; Department of Chemistry, University of Oslo, N-0315, Norway.
| | - Jiang He
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China; Institute of Environmental Geology, Inner Mongolia University, Huhhot 010021, China.
| | - Le Zuo
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China
| | - Rolf D Vogt
- Department of Chemistry, University of Oslo, N-0315, Norway
| | - Liang Zhu
- Department of Chemistry, University of Oslo, N-0315, Norway
| | - Bin Zhou
- Department of Chemistry, University of Oslo, N-0315, Norway; Tianjin Academy of Environmental Sciences, Tianjin, 300191, China
| | | | - Rui Guan
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China
| | - Weiying Wang
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China
| | - Daohao Yan
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China
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Lü C, He J, Zhou B, Vogt RD, Guan R, Wang W, Zuo L, Yan D. Distribution characteristics of organic phosphorus in sediments from Lake Hulun, China. Environ Sci Process Impacts 2015; 17:1851-1858. [PMID: 26395387 DOI: 10.1039/c5em00326a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The amount of organic phosphorus (OP) and its distribution among different pools in lake sediments depend on biotic and abiotic processes driving OP fractionation. The key abiotic factors governing these transformation processes between different OP fractions in sediments were studied on the basis of distribution characteristics of OP pools in sediments from Lake Hulun (HLH). The results showed the order of the size of OP pools in the surface sediments from Lake Hulun to be: Re-OP (residual OP) ≫ FAOP (fulvic acid fraction) ≥ HCl-OP (OP extracted by HCl) > HAOP (humic acid fraction) ≫ LOP (labile OP); lower concentrations of LOP were found in lake surface sediments with high pH (pH > 9) of lake overlying water indicating a governing role of pH in LOP degradation in an aquatic environment. The pattern of total OP (TOP) spatial distribution showed an obvious decreasing trend from the west to the east lake districts in surface sediments from HLH, which was attributed to the inputs of dust and dry grass driven by the prevailing wind and the finer grain size in the west lake districts. However, the spatial distribution pattern of dissolved OP (DOP) in overlying water, which presented different trends with TOP and total organic carbon (TOC) in surface sediments, indicated that the biological factors and terrestrial inputs showed a joint influence on DOP distribution in HLH. The higher levels of Re-OP and lower levels of HCl-OP observed in HLH may reveal that calcium ions and their minerals were the key governing factors of OP fractionation in sediments from HLH. This work revealed the main abiotic process or mechanism driving OP fractionation in the aquatic environment helping to understand the geochemical information archived in OP pools in lake sediments.
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Affiliation(s)
- Changwei Lü
- College of Environment and Resources, Inner Mongolia University, Huhhot 010021, China.
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Lü C, He J, Wang B, Zhou B, Wang W, Fan M. Environmental geochemistry of dissolved and biogenic silicon and its nutrient limitation effects in an inland lake, China. Environ Sci Pollut Res Int 2015; 22:11137-11147. [PMID: 25794579 DOI: 10.1007/s11356-015-4322-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 03/05/2015] [Indexed: 06/04/2023]
Abstract
Silicon (Si) processing and retention play a key role in nutrients biogeochemistry cycling in aquatic environment. In order to interpret the possibility of Si limitation, multivariate analysis was performed based on stoichiometric nutrients balance, distribution characteristics of dissolved silicon (DSi) and biogenic silica (BSi), adsorption behavior, and response relation of BSi with paleoenvironment in water-sediment system of Lake Daihai. The spatial distributions of DSi and BSi in the water-sediment system indicated that terrigenous inputs (such as the weathering of rock and soil in the drainage basin) was the main sources of Si. Meanwhile, grain sizes of sediments, water hydrogeochemistry, and space competition between diatoms and submergent or emerging plants also played important roles in regulating BSi spatial distributions. The sediments from the lake presented obvious releasing trend of Si at low initial concentrations (≤ 3 mg/L) in adsorption experiments, indicating that the sediments were the source of Si to the overlying water. Furthermore, the good response relation between BSi and paleoenvironment observed in the sediment profiles from Lake Daihai indicated that the main reasons for Si limitation to siliceous plankton were different during different periods. The multi-evidences of distribution characteristics, stoichiometric nutrient balance, adsorption behaviors, and response to paleoenvironment were jointly indicative of Si limitation on the primary production of siliceous plankton in Lake Daihai.
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Affiliation(s)
- Changwei Lü
- College of Environment and Resources, Inner Mongolia University, Huhhot, 010021, China,
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Yu Y, Song J, Li X, Yuan H, Li N, Duan L. Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas. J Environ Sci (China) 2013; 25:2185-2195. [PMID: 24552046 DOI: 10.1016/s1001-0742(12)60302-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biogenic elements and six phosphorus (P) fractions in surface sediments from the Changjiang Estuary and adjacent waters were determined to investigate the governing factors of these elements, and further to discuss their potential uses as paleo-environment proxies and risks of P release from sediment. Total organic carbon (TOC) and leachable organic P (Lea-OP) showed high concentrations in the estuary, Zhejiang coast and offshore upwelling area. They came from both the Changjiang River and marine biological input. Biogenic silicon (BSi) exhibited a high concentration band between 123 and 124 degree E. BSi mainly came from diatom production and its concentration in the inshore area was diluted by river sediment. Total nitrogen (TN) was primarily of marine biogenic origin. Seaward decreasing trends of Fe-bound P and Al-bound P revealed their terrestrial origins. Influenced by old Huanghe sediment delivered by the Jiangsu coastal current, the maximum concentration of detrital P (Det-P) was observed in the area north of the estuary. Similar high concentrations of carbonate fluorapatite (CFA-P) and CaCO3in the southern study area suggested marine calcium-organism sources of CFA-P. TOC, TN and non-apatite P were enriched in fine sediment, and Det-P partially exhibited coarse-grain enrichment, but BSi had no correlation with sediment grain size. Different sources and governing factors made biogenic elements and P species have distinct potential uses in indicating environmental conditions. Transferable P accounted for 14%-46% of total P. In an aerobic environment, there was low risk of P release from sediment, attributed to excess Fe oxides in sediments.
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Affiliation(s)
- Yu Yu
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jinming Song
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xuegang Li
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Huamao Yuan
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Ning Li
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Liqin Duan
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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Lü C, He J, Liang Y, Mao H, Liu H, Wang F. Temporal and spatial distribution of biogenic silica and its significance in the Wuliangsuhai Lake and Daihai Lake. ACTA ACUST UNITED AC 2010; 30:100-5. [DOI: 10.1016/j.chnaes.2010.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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