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Liu Q, Liao Y, Zheng Y, Jin H, Huang W, Liu Q, Shou L, Zeng J, Chen Q, Chen J. Elemental geochemical evidence for the river-derived sources of trace metals in surface sediments from Hangzhou Bay, East China Sea. Environ Res 2024; 250:118588. [PMID: 38428563 DOI: 10.1016/j.envres.2024.118588] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/25/2024] [Accepted: 02/27/2024] [Indexed: 03/03/2024]
Abstract
Coastal estuaries are often heavily subject to riverine influences by the inputs of sediment from terrestrial sources. Hangzhou Bay (HZB) is threatened by the riverine derived trace metals from two large rivers of Qiantang River (QTR) and Yangtze River (YZR). However, previous studies mainly focused on the incidental transport from the largest river in China (YZR) and failed to simultaneously evaluate the contributions of these two rivers, especially the directly flowing river of QTR, by their trace elemental geochemical composition and distribution. Herein, a comprehensive study identified the river-derived sources of multiple trace metals in surface sediments which transported from both of the rivers. The sampling stations were separated into three regions of YZR, HZB, and QTR based on their spatial distributions of sediment grain size and components. The significant variations for most of the trace metals concentrations, except for Cd, Th, and U, were found among three regions (χ2 ≥ 8.22, p ≤ 0.016). The highest concentrations in HZB were mainly resulted from the grain size effect (68.82% of the total variance), while the highest concentrations of Sr, Cd, and Ba in YZR and Zr and Hf in QTR were attributed to the anthropogenic source (11.90%) and mineral composition (6.21%) of river basins. After normalized the diversity of multiple trace metals concentrations and the influence of grain size by ratios of Igeo and EFLi, three regions were effectively distinguished. It was indicated that As, Cd, and Sb were enriched in the sediments of rivers by anthropogenic source (EFLi > 1.5 and/or Igeo > 1). The results evidenced that, after removing the influence of grain size, elemental geochemical composition of the surface sediments confidently identified the river-derived anthropogenic sources of the enriched trace metals from two major rivers, and largely from YZR.
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Affiliation(s)
- Qiang Liu
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Ocean Space Resource Management Technology, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China; Observation and Research Station of Marine Ecosystem in the Yangtze River Delta, Ministry of Natural Resources, Hangzhou, China
| | - Yibo Liao
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Ocean Space Resource Management Technology, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China; Observation and Research Station of Marine Ecosystem in the Yangtze River Delta, Ministry of Natural Resources, Hangzhou, China
| | - Yingjuan Zheng
- Chinese Academy of Environmental Sciences, Beijing, China
| | - Haiyan Jin
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China
| | - Wei Huang
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Ocean Space Resource Management Technology, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China
| | - Qinghe Liu
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China
| | - Lu Shou
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China.
| | - Jiangning Zeng
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China; Observation and Research Station of Marine Ecosystem in the Yangtze River Delta, Ministry of Natural Resources, Hangzhou, China.
| | - Quanzhen Chen
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Ocean Space Resource Management Technology, Ministry of Natural Resources, Hangzhou, China
| | - Jianfang Chen
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province, Hangzhou, China
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Chen C, Jiang X, Deng Y, Wang H, Zhang Z, Zhang C. A comprehensive insight into the abundance and community of anammox bacteria in sediments of Hangzhou Bay, China. Mar Pollut Bull 2024; 198:115915. [PMID: 38091632 DOI: 10.1016/j.marpolbul.2023.115915] [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: 08/20/2023] [Revised: 12/03/2023] [Accepted: 12/08/2023] [Indexed: 01/05/2024]
Abstract
A total of 13 surface sediments were collected from Hangzhou Bay (HZB) for an investigation into the distribution and influencing factors of anammox bacterial community. The anammox bacterial 16S rRNA and hzo genes ranged between 2.34 × 105 to 9.22 × 105 copies/g and 3.68 × 105 to 1.70 × 106 copies/g, respectively. The results of high throughput sequencing (HTS) revealed that the obtained OTUs were affiliated with five known genera, named Ca. Scalindua, Ca. Jettenia, Ca. Brocadia, Ca. Kuenenia and Ca. Anammoxoglobus. RDA analysis indicated that salinity, pH, and water depth influenced the anammox bacterial community. Furthermore, network analysis identified Ca. Scalindua as a key genus. Neutral community model (NCM) and modified stochasticity ratio (MST) indicated that the deterministic process dominated the anammox bacterial community assembly. Overall, this study offers a more comprehensive understanding of the abundance and community of anammox bacteria in the sediments of HZB.
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Affiliation(s)
- Chunlei Chen
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China; Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China
| | - Xuexiao Jiang
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China; Guangzhou Marine Geological Survey, Guangzhou 510075, China
| | - Yinan Deng
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China; Guangzhou Marine Geological Survey, Guangzhou 510075, China.
| | - Heng Wang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, 316021, China
| | - Zhichao Zhang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, 316021, China
| | - Chunfang Zhang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China.
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Cai X, Chen H, Cheng J, Huang B, Jin B, Lu J. Coupling of microplastic contamination in organisms and the environment: Evidence from the tidal flat ecosystem of Hangzhou Bay, China. J Hazard Mater 2023; 457:131838. [PMID: 37320899 DOI: 10.1016/j.jhazmat.2023.131838] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/17/2023]
Abstract
Microplastics are a new type of contaminant, widely defined as fragmented plastics with the longest dimension or diameter less than 5 mm, that are widely distributed, difficult to degrade, and easily adsorb other pollutants. Estuaries are key habitats where terrestrial microplastics flow in water runoff and import into the ocean. The ubiquitous use of plastics has resulted in a massive amount of plastic waste that is released and accumulated in bay ecosystems, posing serious ecological impacts. The study of microplastic contamination in Hangzhou Bay, the estuary of the Qiantang River, has important theoretical value in ecology and environmental science. Microplastic contamination in the tidal flats and organisms of Hangzhou Bay is serious and microplastic characteristics (type, size, and polymer type) in organisms were significantly correlated with those in the environmental media. Spatial autocorrelation was found in the abundance of microplastics in marine and tidal flat sediments of Hangzhou Bay, China, but no spatial autocorrelation was found in the sediment environment as a whole. The microplastic abundance in each organism in this study was not statistically correlated by weight or by individual count with its corresponding trophic level (P = 0.239 > 0.05; P = 0.492 > 0.05, respectively). Our study suggests a coupling relationship of microplastic contamination between organisms and the environment and can provide essential data and a scientific foundation for the study of microplastics pollution in Hangzhou Bay, as well as provide important evidence for the ecological and health risk assessment of microplastics.
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Affiliation(s)
- Xinyi Cai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Huili Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jie Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; Marine Ecological Environmental Monitoring Center of Zhejiang Province, Zhoushan 316021, China
| | - Bei Huang
- Marine Ecological Environmental Monitoring Center of Zhejiang Province, Zhoushan 316021, China
| | - Binsong Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jianbo Lu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
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Wu Y, Zhang Z, Huang W, Liu H, Zhang R, Jiao H, Sun A, Chen J, Shi X. Environmental profile, potential sources, and ecological risk of polycyclic aromatic hydrocarbons in a typical coastal bay and outer bay area. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27885-3. [PMID: 37264168 DOI: 10.1007/s11356-023-27885-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/19/2023] [Indexed: 06/03/2023]
Abstract
As a class of persistent organic pollutants, polycyclic aromatic hydrocarbons (PAHs) are widely present and accumulate in multimedia environments. The pollution characteristics, spatiotemporal distribution, potential sources, influencing factors, and ecological risks of 16 PAHs were investigated in the water-sediment system of the Hangzhou Bay and outer bay area (HZB and OBA, respectively). The total concentrations of 16 PAHs (∑PAHs) were 220 ± 97.0 and 130 ± 36.0 ng/L in the seawater and 343 ± 179 and 505 ± 415 μg/kg (dry weight) in the sediments of the HZB and OBA, respectively. The pollution level of PAHs in the HZB seawater was higher than that in the OBA seawater, but the opposite result was found in the sediments. Moreover, ∑PAHs exhibited high temporal variability in the HZB seawater (rainy season > dry season), whereas ∑PAHs in the sediments showed no significant difference between seasons. The molecular diagnostic ratio method was used to identify pollution sources and showed that the PAHs in seawater came from different pollution sources (fuel combustion and petroleum), whereas the PAHs in the sediments originated from coincident sources (mixed combustion). Correlation analysis revealed that temperature was positively related to ∑PAHs, whereas salinity was negatively related to seawater ∑PAHs values. Ecological risk assessment demonstrated that the potential for adverse ecological effects was low to moderate in seawater but moderate to high in the sediments.
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Affiliation(s)
- Yuyao Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China
| | - Zeming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China
| | - Wei Huang
- Key Laboratory of Marine Ecosystem Dynamics and Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China
| | - Hua Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China
| | - Rongrong Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China
| | - Haifeng Jiao
- College of Biological and Environment Science, Zhejiang Wanli University, Ningbo, 315100, People's Republic of China
| | - Aili Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China
| | - Xizhi Shi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo, 315211, People's Republic of China.
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Qu J, Wu P, Pan G, Li J, Jin H. Microplastics in Seawater, Sediment, and Organisms from Hangzhou Bay. Mar Pollut Bull 2022; 181:113940. [PMID: 35853409 DOI: 10.1016/j.marpolbul.2022.113940] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 05/23/2022] [Revised: 07/03/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Microplastics (MPs) are widely present in global oceans, and can pose a threat to marine organisms. This study examined the abundance and characteristics of MPs in seawater, sediment, and organism samples collected from Hangzhou Bay. Abundance of MPs in seawater (n = 26) and sediment (n = 26) were 0.77-9.6 items/m3 and 44-208 items/kg dw, respectively. Size of MPs in sediment (mean 2.5 mm, range 0.21-5.3 mm) was significantly (p < 0.05) larger than that in seawater (1.1 mm, 0.13-4.9 mm). Fiber was consistently the predominant shape of MPs in seawater and sediment. The major polymer composition of MPs was polyethylene (PE; mean 47 %) in seawater, but textile cellulose (60 %) was the main polymer type of MPs in sediment. Average abundance of MPs in marine organisms (n = 388) ranged from 0.064 (zooplankton) to 2.9 (Harpodon nehereus) items/ind, with the mean size of 0.19-1.4 mm. MP abundance in marine organisms was not significantly correlated with their trophic level. Fiber was always the predominant shape of MPs in different marine organisms, contributing mean 67 (fish)-93 % (zooplankton) of total MPs. MPs in crustacean (mean 58 %), shellfish (64 %), and cephalopod (29 %) were dominated by textile cellulose. Whereas, PE (mean 44 %) and polypropylene (43 %) were the major polymer compositions of MPs in fish and zooplankton, respectively. To our knowledge, this is the most comprehensive study investigating the occurrence of MPs in environmental matrixes from Hangzhou Bay, which contributes to the better understanding of environmental behaviors of MPs in estuarine sea environment.
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Affiliation(s)
- Jianli Qu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Pengfei Wu
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong 999077, PR China
| | - Guojun Pan
- Zhejiang Haihe Environmental Technology Co., Ltd., 1389 Danxi Road, Jinhua, Zhejiang 321000, PR China
| | - Jiangpeng Li
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Hangbiao Jin
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China.
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Xu C, Qian C, Yang W, Li B, Kong L, Kong F. Spatiotemporal Pattern of Urban-Rural Integration Development and Its Driving Mechanism Analysis in Hangzhou Bay Urban Agglomeration. Int J Environ Res Public Health 2022; 19:ijerph19148390. [PMID: 35886243 PMCID: PMC9320824 DOI: 10.3390/ijerph19148390] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/28/2022] [Accepted: 07/05/2022] [Indexed: 02/06/2023]
Abstract
The quantitative analysis of the urban-rural integration development (URID) level and its driving factors is of great significance for the new-type urbanization of urban agglomerations. This study constructed a multidimensional framework in the perspective of a population–space–economy–society–ecology framework to measure the URID level from 2000 to 2020 and further explored the driving mechanism of the URID changes by a geographical detector model in the Hangzhou Bay urban agglomeration (HBUA). The results showed that the land-use change in the HBUA from 2000 to 2020 showed a typical characteristic of the transition between cultivated and construction land. The URID level in the HBUA improved from 0.294 in 2000 to 0.563 in 2020, and the year 2005 may have been the inflection point of URID in the HBUA. The URID level showed a significant spatial aggregation with high values. Hangzhou, Jiaxing, and Ningbo were hot spots since 2015, and the cold spots were Huzhou and Shaoxing. The population and spatial integration had more important impacts on URID levels in 2000, 2005, and 2020, while economic and social integration had more significant impacts on URID levels in 2010 and 2015. This study provided a deeper understanding of the evolution of URID in an urban agglomeration and could be used as a reference for decision makers.
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Affiliation(s)
- Caiyao Xu
- Institute of Ecological Civilization, Zhejiang A&F University, Hangzhou 311300, China; (C.X.); (B.L.); (L.K.)
- Research Academy for Rural Revitalization of Zhejiang Province, Zhejiang A&F University, Hangzhou 311300, China
- College of Economics and Management, Zhejiang A&F University, Hangzhou 311300, China; (C.Q.); (W.Y.)
| | - Chen Qian
- Institute of Ecological Civilization, Zhejiang A&F University, Hangzhou 311300, China; (C.X.); (B.L.); (L.K.)
| | - Wencai Yang
- Institute of Ecological Civilization, Zhejiang A&F University, Hangzhou 311300, China; (C.X.); (B.L.); (L.K.)
| | - Bowei Li
- Institute of Ecological Civilization, Zhejiang A&F University, Hangzhou 311300, China; (C.X.); (B.L.); (L.K.)
- Research Academy for Rural Revitalization of Zhejiang Province, Zhejiang A&F University, Hangzhou 311300, China
- College of Economics and Management, Zhejiang A&F University, Hangzhou 311300, China; (C.Q.); (W.Y.)
| | - Lingqian Kong
- Institute of Ecological Civilization, Zhejiang A&F University, Hangzhou 311300, China; (C.X.); (B.L.); (L.K.)
- Research Academy for Rural Revitalization of Zhejiang Province, Zhejiang A&F University, Hangzhou 311300, China
- College of Economics and Management, Zhejiang A&F University, Hangzhou 311300, China; (C.Q.); (W.Y.)
| | - Fanbin Kong
- Institute of Ecological Civilization, Zhejiang A&F University, Hangzhou 311300, China; (C.X.); (B.L.); (L.K.)
- Research Academy for Rural Revitalization of Zhejiang Province, Zhejiang A&F University, Hangzhou 311300, China
- College of Economics and Management, Zhejiang A&F University, Hangzhou 311300, China; (C.Q.); (W.Y.)
- Correspondence:
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Wang LY, Gu YY, Zhang ZM, Sun AL, Shi XZ, Chen J, Lu Y. Contaminant occurrence, mobility and ecological risk assessment of phthalate esters in the sediment-water system of the Hangzhou Bay. Sci Total Environ 2021; 770:144705. [PMID: 33736359 DOI: 10.1016/j.scitotenv.2020.144705] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
The pollution characteristics, spatiotemporal variation, sediment-water partitioning, and potential ecological risk assessment of phthalate esters (PAEs) in the sediment-seawater system of the Hangzhou Bay (HZB) in summer and autumn were researched. The sum of the concentrations of the 10 PAEs in seawater ranges from 7305 ng/L to 22,861 ng/L in summer and from 8100 ng/L to 33,329 ng/L in autumn, with mean values of 15,567 ± 4390 and 17,884 ± 6850 ng/L, respectively. The Σ16PAEs in the sediments are between 118 and 5888 μg/kg and 145 and 4746 μg/kg in summer and autumn, respectively. The level of PAEs in seawater varies with the seasons, but it is relatively stable in the sediments. Di(2-ethylhexyl) phthalate (DEHP), di-n-butyl phthalate (DnBP), and diisobutyl phthalate (DiBP) are the predominant PAE congeners in the HZB. The DnBP and DiBP concentrations in seawater are greater than the DEHP concentration, which is the opposite in the sediments. The sediment-seawater equilibrium distribution study indicates that the PAEs with medium molecular weights, such as DiBP, butyl benzyl phthalate, and DnBP, are near dynamic equilibrium in the sediment-seawater system; PAEs with high molecular weights (e.g., di-n-octyl phthalate and DEHP) tend to transfer from water to the sediments; and PAEs with low molecular weights (e.g., dimethyl phthalate, diethyl phthalate, and diamyl phthalate) tend to spread to seawater. The risk assessment results in seawater indicate that DEHP and DiBP might pose high potential risks to sensitive organisms, and DnBP might exhibit medium ecological risks. In the sediment, DiBP might display a high potential risk to fish, and the potential risk of DEHP is high in several sites.
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Affiliation(s)
- Liu-Yong Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, PR China
| | - Yan-Yu Gu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, PR China
| | - Ze-Ming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
| | - Ai-Li Sun
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Xi-Zhi Shi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Yin Lu
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, PR China
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Xu H, Yang H, Ge Q, Jiang Z, Wu Y, Yu Y, Han D, Cheng J. Long-term study of heavy metal pollution in the northern Hangzhou Bay of China: temporal and spatial distribution, contamination evaluation, and potential ecological risk. Environ Sci Pollut Res Int 2021; 28:10718-10733. [PMID: 33099735 DOI: 10.1007/s11356-020-11110-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 03/22/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
Coastal ecosystem is vulnerable to heavy metal contamination. The northern Hangzhou Bay is under intensifying impact of anthropogenic activities. To reveal the heavy metal pollution status in the coastal environment of the Hangzhou Bay, a long-term investigation into the heavy metal contamination during 2011 to 2016 was initiated. Seawater and sediment samples of 25 locations depending on the sewage outlet locations in the northern Hangzhou Bay were collected to analyze the concentrations and temporal and spatial distribution of Cu, Pb, Zn, Cd, Hg, and As. Pollution condition, ecological risk, and potential sources were additionally analyzed. Results show that the annual mean concentrations of Cu, Pb, Zn, Cd, Hg, and As were 2.13-4.59, 0.212-1.480, 7.81-20.34, 0.054-0.279, 0.026-0.090, and 1.08-2.57 μg/L in the seawater, and were 16.34-28.35, 16.25-26.33, 67.32-97.61, 0.084-0.185, 0.029-0.061, and 6.09-14.08 μg/L in the sediments. A decreasing trend in Cu, Pb, Zn, Cd, and Hg concentrations and an increasing trend in As of the seawater were observed. However, in the sediment, the heavy metals demonstrated a rising trend, except for Hg. The single-factor pollution index showed an increasing trend in Cd and As in the seawater, depicting an enhanced pollution of Cd and As, while in the sediments, Cu, Pb, and As were in pollution-free level (average Geo-accumulation index (Igeo) values below 0) in general, and only occasional slight pollution occurred in individual years, e.g., As with 0.403 in 2016. The mean Igeo values of Cd ranged from - 0.865 to 0.274 during 2011 to 2016, indicating that the pollution level of Cd was slight, but is likely to increase in the forthcoming years. The level of heavy metal contamination in sediments was low in 2011 (5.853) and 2012 (5.172), and moderate during 2013 to 2016 (in the range of 6.107 to 7.598), while the degree of potential ecological risk was low in the study period, except moderate in 2013 (125.107). The highest contamination degree and potential ecological risk appeared in 2013 (Cd = 7.598; RI = 125.107), while Cd and Hg contributed over 75% of the ecological risk. Overall, the results show low pollution level and low potential ecological risk in the northern Hangzhou Bay; however, more attention should be paid to the potential ecological risk due to Hg and Cd. Graphical abstract Spatial distribution of the heavy metal levels in the sediment of the coastal environment of the northern Hangzhou Bay on a long-term basis.
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Affiliation(s)
- Hao Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
| | - Huahong Yang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
- Marine Forecast Center of East China Sea, State Oceanic Administration, Shanghai, 200081, China
| | - Qiyun Ge
- Administrative Service Center, Shanghai Municipal Oceanic Bureau, Shanghai, 200050, China
| | - Zhenyi Jiang
- Administrative Service Center, Shanghai Municipal Oceanic Bureau, Shanghai, 200050, China
| | - Yang Wu
- Administrative Service Center, Shanghai Municipal Oceanic Bureau, Shanghai, 200050, China
| | - Yamei Yu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
| | - Deming Han
- School of Environmental, Tsinghua University, Beijing, 100084, China
| | - Jinping Cheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China.
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Deng Z, Li X, Chen C, Zhang N, Zhou H, Wang H, Han X, Zhang C. Distribution characteristics and environmental fate of PCBs in marine sediments at different latitudinal regions: Insights from congener profiles. Mar Pollut Bull 2020; 161:111710. [PMID: 33022494 DOI: 10.1016/j.marpolbul.2020.111710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 06/18/2020] [Revised: 09/08/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Sediments were sampled from Hangzhou Bay (HB), the South China Sea (SCS), and Antarctica (AZ) to better understand the distribution characteristics and environmental fate of polychlorinated biphenyls (PCBs) at different latitudes. Numerous PCB congeners (68) were detected among the sampling sites, supporting the ubiquity of PCB congeners. High and low chlorinated congeners dominated the PCB profiles of AZ and SCS, respectively, whereas the PCB homologues were evenly distributed in the HB. As a fraction of low chlorinated PCBs originates from an exogenous input, the low mean ratios of ∑Tetra-CBs to ∑PCBs and ∑Tetra-CBs to the sum of ∑Tri- and ∑Di-CBs suggest that microbial transformation of PCBs is weak in marine surface sediments, if any occurs at all. Furthermore, PCB contamination levels in marine sediments may be primarily influenced by latitude rather than pollution sources. Thus, the findings of this study suggest that Antarctica is becoming a prospective hotspot for PCBs.
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Affiliation(s)
- Zhaochao Deng
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China
| | - Xinkai Li
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China
| | - Chunlei Chen
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China
| | - Ning Zhang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China
| | - Hanghai Zhou
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China
| | - Heng Wang
- Zhoushan City Center for Disease Control and Prevention, Zhoushan 316021, Zhejiang, China
| | - Xibin Han
- Key Laboratory of Submarine Geosciences & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, Zhejiang, China
| | - Chunfang Zhang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin 541006, Guangxi, China.
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10
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Li R, Yuan Y, Li C, Sun W, Yang M, Wang X. Environmental Health and Ecological Risk Assessment of Soil Heavy Metal Pollution in the Coastal Cities of Estuarine Bay-A Case Study of Hangzhou Bay, China. Toxics 2020; 8:E75. [PMID: 32971901 DOI: 10.3390/toxics8030075] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 12/28/2022]
Abstract
Shanghai is the major city on the north shore of Hangzhou Bay, and the administrative regions adjacent to Hangzhou Bay are the Jinshan district, Fengxian district, and Pudong new area (Nanhui district), which are the main intersection areas of manufacturing, transportation, and agriculture in Shanghai. In this paper, we collected a total of 75 topsoil samples from six different functional areas (agricultural areas (19), roadside areas (10), industrial areas (19), residential areas (14), education areas (6), and woodland areas (7)) in these three administrative regions, and the presence of 10 heavy metals (manganese(Mn), zinc(Zn), chromium(Cr), nickel(Ni), lead(Pb), cobalt(Co), cadmium(Cd), mercury(Hg), copper(Cu), and arsenic(As)) was investigated in each sample. The Nemerow pollution index (NPI), pollution load index (PLI), and potential ecological risk index (PERI) were calculated to assess the soil pollution levels. The hazard quotient (HQ) and carcinogenic risk (CR) assessment models were used to assess the human health risks posed by the concentrations of the heavy metals. The CR and HQ for adults and children in different functional areas descended in the following order: industrial areas > roadside areas > woodland areas > residential areas > education areas > agricultural areas. The HQ of Mn for children in industrial areas was higher than 1, and the risk was within the acceptable range.
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11
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Wang N, Wang YP, Duan X, Wang J, Xie Y, Dong C, Gao J, Yin P. Controlling factors for the distribution of typical organic pollutants in the surface sediment of a macrotidal bay. Environ Sci Pollut Res Int 2020; 27:28276-28287. [PMID: 32415449 DOI: 10.1007/s11356-020-09199-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 11/26/2019] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
Marine sediment is the final sink of polycyclic aromatic hydrocarbons (PAHs) from river input and atmospheric deposition. Such kind of pollutant cycles in the marine environment is usually controlled by hydrodynamic conditions. Many previous studies have explored how ocean currents influence pollutant distribution, but very few studies have focused on the relationships between the distribution patterns of pollutant and residual currents or sediment transport. In this study, 16 monomers of PAHs from 135 surface sediment samples collected in the Hangzhou Bay, a typical macrotidal bay, were systematically identified and their sources were analyzed. The sediment characteristics and distribution pattern were also comprehensively analyzed. The results showed the seabed sediments were moderately polluted by PAHs with a level of 38.58-1371.06 ng/g (median 186.70 ng/g). Most of the PAHs are composed of three to five rings, originated from combustion of coal and firewood. The combustion of oil also contributes to PAHs in seabed sediments for some areas. The PAHs are found to be concentrated within the estuary and the offshore areas, as well in coastal ocean. Fine-grained sediment transport is controlled by residual currents, which leads to PAH accumulation in the bay and the offshore areas, forming a high-value distribution pattern. Hence, we conclude that residual current is the main factors that control the long-term distribution of PAHs in the seabed sediments of the macrotidal bay. Temporal and spatial varying models of PAHs were needed in a further study to explore further the mechanisms how PAHs are transported in coastal areas.
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Affiliation(s)
- Ning Wang
- Ministry of Education Key Laboratory for Coast and Island Development, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China
| | - Ya Ping Wang
- Ministry of Education Key Laboratory for Coast and Island Development, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China.
- State Key Laboratory of Estuarine and Coastal Research, School of Marine Sciences, East China Normal University, Shanghai, 200241, China.
| | - Xiaoyong Duan
- Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, 266071, China.
| | - Jianqiang Wang
- Zhejiang Institute of Hydrogeology and Engineering Geology, Zhejiang, 315012, China
| | - Yongqing Xie
- Zhejiang Institute of Hydrogeology and Engineering Geology, Zhejiang, 315012, China
| | - Chao Dong
- Zhejiang Institute of Hydrogeology and Engineering Geology, Zhejiang, 315012, China
| | - Jianhua Gao
- Ministry of Education Key Laboratory for Coast and Island Development, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China
| | - Ping Yin
- Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, 266071, China
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12
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Zhao W, Huang W, Yin M, Huang P, Ding Y, Ni X, Xia H, Liu H, Wang G, Zheng H, Cai M. Tributary inflows enhance the microplastic load in the estuary: A case from the Qiantang River. Mar Pollut Bull 2020; 156:111152. [PMID: 32510419 DOI: 10.1016/j.marpolbul.2020.111152] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [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: 08/05/2019] [Revised: 03/26/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
Microplastics (MPs) in the surface water of the Qiantang River and its tributaries were investigated in this study, to evaluate the contribution of riverine discharge on emerging pollution load in the Hangzhou Bay. The abundance of MPs (mean 1183 ± 269 particles/m3) showed spatially and temporally heterogeneous in the surface water. Polyamide, polyester, and polyethylene teraphalate were the major components, accounting for 77.4% of all polymer types. Fiber was the most common shape, indicating the potential anthropogenic sources of MPs. The MPs flux from the Qiantang River to the Hangzhou Bay was estimated to be 2831 tons/year, implying the importance of riverine discharge in an estuarine bay. The inputs from the complicated tributaries system led to a 20-fold increase of MPs flux, and would significantly improve their budget of downstream and estuary, so we suggested the control and management on plastic pollution should be strengthened in all aspects.
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Affiliation(s)
- Wenlu Zhao
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361002, PR China; College of Ocean and Earth Science, Xiamen University, Xiamen 361005, PR China.
| | - Wei Huang
- Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Mingchao Yin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Peng Huang
- College of Ocean and Earth Science, Xiamen University, Xiamen 361005, PR China; College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Yongcheng Ding
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, PR China
| | - Xuan Ni
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Huilong Xia
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Huijun Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Guoqin Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Haowen Zheng
- College of Ocean and Earth Science, Xiamen University, Xiamen 361005, PR China
| | - Mingang Cai
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361002, PR China; College of Ocean and Earth Science, Xiamen University, Xiamen 361005, PR China; Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, PR China.
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13
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Hu H, Fang S, Zhao M, Jin H. Occurrence of phthalic acid esters in sediment samples from East China Sea. Sci Total Environ 2020; 722:137997. [PMID: 32208289 DOI: 10.1016/j.scitotenv.2020.137997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/10/2020] [Accepted: 03/15/2020] [Indexed: 06/10/2023]
Abstract
Phthalic acid esters (PAEs) are widely used as plasticizers in many industrial and household products. The widespread distribution of PAEs in marine environment has attracted great concerns, due to their adverse health effects on marine organisms. However, the data on the occurrence of PAEs in sediment from East China Sea is still scarce. In this study, 16 PAEs were analyzed in 67 sediment samples collected from the Hangzhou Bay, Taizhou Bay, and Wenzhou Bay. Eight PAEs were detected in collected sediment samples, and the total concentrations of detected PAEs (∑PAEs) were in the range of 654-2603 ng/g. The di(2-ethylhexyl) phthalate (DEHP) was the predominant PAE (mean 663 ng/g; accounted for mean 52% of ∑PAEs), followed by di-isobutyl phthalate (DiBP; 284 ng/g; 22%), di-n-butyl phthalate (DBP; 184 ng/g; 15%), and dimethyl phthalate (63 ng/g; 5.0%). The mean sediment concentration of ∑PAEs in the Hangzhou Bay (1623 ng/g) was higher than that in the Taizhou Bay (1282 ng/g) and Wenzhou Bay (1185 ng/g). Concentrations of diethyl phthalate, DiBP, and DBP were significantly and positively correlated with one another in sediment from Taizhou Bay and Wenzhou Bay. The estimated inventories of ∑PAEs in sediment from Hangzhou Bay, Taizhou Bay, and Wenzhou Bay were 82 tons, 28 tons, and 26 tons, respectively. Overall, this study provides the first data on the occurrence of PAEs in sediment from the East China Sea, which is necessary to conduct the PAE exposure risk assessment for the marine benthos.
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Affiliation(s)
- Hongmei Hu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Marine Fishery Institute of Zhejiang Province, Zhoushan 316021, PR China
| | - Shuhong Fang
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, PR China
| | - Meirong Zhao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Hangbiao Jin
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China.
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14
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Fraser MA, Chen L, Ashar M, Huang W, Zeng J, Zhang C, Zhang D. Occurrence and distribution of microplastics and polychlorinated biphenyls in sediments from the Qiantang River and Hangzhou Bay, China. Ecotoxicol Environ Saf 2020; 196:110536. [PMID: 32234585 DOI: 10.1016/j.ecoenv.2020.110536] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [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: 12/12/2019] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
Rivers are important routes for sea-bound microplastics. Thus, this study investigated the occurrences and distributions of microplastics and polychlorinated biphenyls (PCBs) in sediment samples from the Qiantang River (QR) and Hangzhou Bay (HZ) and analyzed the correlation between microplastics and PCBs. A total of 15 sampling sites were selected, including eight from the QR (i.e., four in the Tonglu area and four in the Fuyang area), two from the Andong salt marsh (ASM; located in a hydrodynamic turning point of the HZ), and five from HZ. The mean microplastic abundance was highest in the QR, followed by HZ and ASM, with 0.23 ± 0.06, 0.18 ± 0.05, and 0.15 ± 0.03 particles/g sediment, respectively. Cluster analysis demonstrated that fragments and fibers may have originated from domestic sewage inputs to the QR. Spatially, mean PCB concentrations from Tonglu, Fuyang, and HZ were 1.47 ± 0.10, 1.65 ± 0.10, and 1.65 ± 0.09 ng/g sediment, respectively, which were higher than that from the ASM (1.13 ± 0.09 ng/g sediment). The vertical distributions (0-5 cm, 5-10 cm, and 10-15 cm) of microplastics in the sediments at Tonglu and Fuyang decreased with increasing depth, which was opposite to the depth trend of PCB concentrations. Micro-Fourier transform infrared spectroscopy analysis suggested that polyethylene was typically the dominant polymer, accounting for 60 ± 0.08% of the total suspected plastic particles. Microbeads and films showed considerable correlations with both highly and lesser chlorinated PCBs. Overall, our findings highlight the need for routine monitoring of microplastics in China in addition to measures for controlling plastic pollution on a national scale. Further study should ascertain specific sources of microplastics and analyze their adsorption capacity to organic pollutants.
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Affiliation(s)
- Maria A Fraser
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Lei Chen
- Ocean Research Center of Zhoushan, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Muhammad Ashar
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Wei Huang
- Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, Zhejiang, China
| | - Jiangning Zeng
- Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, Zhejiang, China
| | - Chunfang Zhang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin, 541006, Guangxi, China
| | - Dongdong Zhang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China.
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15
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Wang Q, Li X, Liu S, Zhang D, Duan X. The effect of hydrodynamic forcing on the transport and deposition of polybrominated diphenyl ethers (PBDEs) in Hangzhou Bay. Ecotoxicol Environ Saf 2019; 179:111-118. [PMID: 31030054 DOI: 10.1016/j.ecoenv.2019.04.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 01/03/2019] [Revised: 03/18/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
Surface sediment samples (n = 92) were collected from Hangzhou Bay to investigate the transport and deposition of polybrominated diphenyl ethers (PBDEs) and to assess the ecological risks in Hangzhou Bay. The concentrations of ∑7PBDEs (sum of BDE-28, 47, 99, 100, 153, 154, 183) and BDE-209 ranged from 3.61 to 91.09 pg g-1 and from non-detectable to 2007.52 pg g-1 (dry weight), respectively. The high values of ∑7PBDEs and BDE-209 were commonly occurred at the northeast of Hangzhou Bay and the Nanhui Spit coast of Shanghai. Compared with the south part of the bay, the dominance of BDE-209 was more prominent and the linear correlations between PBDEs concentrations and TOCs as well as median grain size were more significant in the northern Hangzhou Bay. Hydrodynamic forcing on the transport and deposition of PBDEs is primarily responsible for the discrepancy of this spatial distribution in these two parts. In addition to BDE-209, BDEs-153, 99, 47, and 100 were also the abundant congeners. Three principal components were extracted using principal component analysis (PCA), mainly attributed to human activities, erosion of polluted soils via surface runoff and release from products for PC1, PC2 and PC3, respectively. The calculation results of mass inventories, hazard quotients (HQs) and risk quotients (RQs) indicated that the ecological risk of PBDEs in Hangzhou Bay was low. The multiple effect of hydrodynamic forcing with complicated and large-scope tidal currents made it hard to deposit for organic matters and contaminants in Hangzhou Bay.
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Affiliation(s)
- Qianqian Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
| | - Xianguo Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Shaopeng Liu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Dahai Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Xiaoyong Duan
- Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, 266071, China.
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16
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Li Y, Li YM, Guo YL, Zhang YL, Zhang YB, Hu YD, Xia Z. [Reconstruction of Water Hyperspectral Remote Sensing Reflectance Based on Sparse Representation and Its Application]. Huan Jing Ke Xue 2019; 40:200-210. [PMID: 30628276 DOI: 10.13227/j.hjkx.201804210] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Multispectral satellite sensors have several limitations with respect to capturing the target's spectral information due to their band setting and number of bands. The hyperspectral reconstruction technique is an effective method to obtain hyperspectral information from multispectral data. In this study, we propose a hyperspectral reconstruction algorithm based on the sparse representation of water remote sensing reflectance. The proposed algorithm was validated for five ocean color sensors (Sentinel-2A MSI, MERIS, MODIS Aqua, GOCI, and ⅦRS) using in situ measured above-water remote sensing reflectance. The mean absolute percentage error (MAPE) and root mean square error (RMSE) of the reconstructed and measured spectra for five ocean color sensors were less than 10% and 0.005 sr-1, respectively. Compared with the spectra reconstruction algorithm based on multi-variable linear regression, the proposed algorithm can obtain the features of complex water remote sensing reflectance without using in situ-measured reflectance for algorithm tuning. In addition, the accuracy of the proposed algorithm is better than the spectra reconstruction algorithm based on multi-variable linear regression. Two spectra reconstruction algorithms were applied to five ocean color sensors to test the applicability of the remotely estimated water constituent concentration. The statistical results for the reconstructed spectral factors and in situ water constituent concentration suggest that the reconstructed reflectance derived by the proposed algorithm has a performance similar to that of in situ-measured hyperspectral reflectance. The reconstructed reflectance derived by the proposed algorithm performs better than the spectra reconstruction algorithm based on multi-variable linear regression. Finally, the proposed algorithm was applied to GOCI data to remotely estimate the chlorophyll-a and total suspended matter concentrations. The accuracy of the water constituent concentration estimated from reconstructed images is better than that using original multispectral images. For the estimation of the chlorophyll-a concentration, the MAPE improved from 80.6% to 51.5% and the RMSE improved from 12.175 μg·L-1 to 7.125 μg·L-1. For the estimation of total suspended matter, the MAPE improved from 19.1% to 18.8% and the RMSE improved from 29.048 mg·L-1 to 28.596 mg·L-1.
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Affiliation(s)
- Yuan Li
- School of Tourism and Urban & Rural Planning, Zhejiang Gongshang University, Hangzhou 310018, China
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yun-Mei Li
- School of Geography Science, Nanjing Normal University, Nanjing 210023, China
| | - Yu-Long Guo
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Yun-Lin Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yi-Bo Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yao-Duo Hu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhong Xia
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
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17
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Yuan J, Ni M, Liu M, Zheng Y, Gu Z. Occurrence of antibiotics and antibiotic resistance genes in a typical estuary aquaculture region of Hangzhou Bay, China. Mar Pollut Bull 2019; 138:376-384. [PMID: 30660287 DOI: 10.1016/j.marpolbul.2018.11.037] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [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: 08/31/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
The widespread use of antibiotics in aquaculture can potentially lead to the emergence of antibiotic resistance genes (ARGs) and threaten human health by entering the food chain. To assess the environmental risk posed by antibiotics in China, the spatial-temporal distribution and correlation of 8 antibiotics based on the abundance of 11 ARGs in water sources, pond water, and sediment in 8 ponds were determined. The results indicated that sul1 was the predominant ARG in water sources and pond water, and tetC was the most in the sediment. A trend of increasing abundance of ARGs was observed with increased rearing density and pond age. Compared to monoculture, shrimp culture integrated with different trophic levels of fish farming could influence the abundance of ARGs. There was also a significant correlation between the abundance of ARGs and antibiotic concentration in the sediment, while no correlation was observed in water sources and pond water.
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Affiliation(s)
- Julin Yuan
- Zhejiang Institute of Freshwater Fisheries, Freshwater Fishery Healthy Breeding Laboratory of Ministry of Agriculture, Huzhou, Zhejiang 313001, China
| | - Meng Ni
- Zhejiang Institute of Freshwater Fisheries, Freshwater Fishery Healthy Breeding Laboratory of Ministry of Agriculture, Huzhou, Zhejiang 313001, China
| | - Mei Liu
- Zhejiang Institute of Freshwater Fisheries, Freshwater Fishery Healthy Breeding Laboratory of Ministry of Agriculture, Huzhou, Zhejiang 313001, China
| | - Yao Zheng
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture, Wuxi, Jiangsu 214081, China
| | - Zhimin Gu
- Zhejiang Institute of Freshwater Fisheries, Freshwater Fishery Healthy Breeding Laboratory of Ministry of Agriculture, Huzhou, Zhejiang 313001, China.
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18
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Xie YW, Chen LJ, Liu R, Tian JP. AOX contamination in Hangzhou Bay, China: Levels, distribution and point sources. Environ Pollut 2018; 235:462-469. [PMID: 29316521 DOI: 10.1016/j.envpol.2017.12.089] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [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: 09/07/2017] [Revised: 12/21/2017] [Accepted: 12/23/2017] [Indexed: 05/25/2023]
Abstract
The parameter AOX (adsorbable organic halogens) indicates the total amount of organic halogens in an environment. Seawater and surface sediment samples from 12 sample sites in the Hangzhou Bay (HZB), China, were analyzed for AOX to investigate its contamination status. In this study, the AOX concentration ranged from 140.6 ± 45.6 μg/L to 716.1 ± 62.3 μg/L in seawater of the HZB, and from 11.3 ± 2.4 mg/kg to 112.7 ± 7.2 mg/kg in the sediment. Ocean currents, fluvial currents and the Yangtze River exerted profound influences on the distribution of AOX in the HZB. The point sources around the HZB, represented by wastewater treatment plants, discharged at least 645.4 t AOX into the HZB every year, most of which was generated by industrial activities rather than the human daily activities.
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Affiliation(s)
- Ya-Wei Xie
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Lu-Jun Chen
- School of Environment, Tsinghua University, Beijing 100084, China; Zhejiang Provincial Key Laboratory of Water Science and Technology, Zhejiang 314006, China.
| | - Rui Liu
- Zhejiang Provincial Key Laboratory of Water Science and Technology, Zhejiang 314006, China.
| | - Jin-Ping Tian
- School of Environment, Tsinghua University, Beijing 100084, China
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19
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Chen P, Pan D, Wang T, Mao Z, Zhang Y. Coastal and inland water monitoring using a portable hyperspectral laser fluorometer. Mar Pollut Bull 2017; 119:153-161. [PMID: 28363427 DOI: 10.1016/j.marpolbul.2017.03.057] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 03/08/2017] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
The potential for a ship-mounted laser fluorometer to provide rapid, non-intrusively measurements in both coastal and lake conditions are investigated. The instrument consists of a high pulse repetition frequency (10-kHz) microchip laser for fluorescence excitation, a broadband hyperspectral micro spectrometer for spectral detection, and a confocal reflective fluorescent probe for signal collection; it weighs only about 1.7kg. Chlorophyll a (chl-a) and colored dissolved organic matter (CDOM) measured by the new instrument were observed to agree well with those measured by traditional time-consuming laboratory methods in Hangzhou Bay seawater and Qiandao Lake inland water. Subsequently, laser fluorescence distribution and characteristics of chl-a and CDOM in these regions were analyzed, which will improve our understanding of biogeochemical processes in these optically complex aquatic systems. The portable system is promising for water environment monitoring, especially in coastal and inland water.
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Affiliation(s)
- Peng Chen
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China.
| | - Delu Pan
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China
| | - Tianyu Wang
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China
| | - Zhihua Mao
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China
| | - Yiwei Zhang
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China
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20
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Sun T, Lin W, Chen G, Guo P, Zeng Y. Wetland ecosystem health assessment through integrating remote sensing and inventory data with an assessment model for the Hangzhou Bay, China. Sci Total Environ 2016; 566-567:627-640. [PMID: 27236628 DOI: 10.1016/j.scitotenv.2016.05.028] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 05/03/2016] [Accepted: 05/05/2016] [Indexed: 06/05/2023]
Abstract
Due to rapid urbanization, industrialization and population growth, wetland area in China has shrunk rapidly and many wetland ecosystems have been reported to degrade during recent decades. Wetland health assessment could raise the public awareness of the wetland condition and guide policy makers to make reasonable and sustainable policies or strategies to protect and restore wetland ecosystems. This study assessed the health levels of wetland ecosystem at the Hangzhou Bay, China using the pressure-state-response (PSR) model through synthesizing remote sensing and statistical data. Ten ecological and social-economic indicators were selected to build the wetland health assessment system. Weights of these indicators and PSR model components as well as the normalized wetland health score were assigned and calculated based on the analytic hierarchy process (AHP) method. We analyzed the spatio-temporal changes in wetland ecosystem health status during the past 20years (1990-2010) from the perspectives of ecosystem pressure, state and response. The results showed that the overall wetland health score was in a fair health level, but displayed large spatial variability in 2010. The wetland health score declined from good health level to fair health level from 1990 to 2000, then restored slightly from 2000 to 2010. Overall, wetland health levels showed a decline from 1990 to 2010 for most administrative units. The temporal change patterns in wetland ecosystem health varied significantly among administrative units. Our results could help to clarify the administrative responsibilities and obligations and provide scientific guides not only for wetland protection but also for restoration and city development planning at the Hangzhou Bay area.
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Affiliation(s)
- Tengteng Sun
- College of Tourism, Shanghai Normal University, Shanghai 200234, PR China; College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, PR China
| | - Wenpeng Lin
- College of Tourism, Shanghai Normal University, Shanghai 200234, PR China.
| | - Guangsheng Chen
- Environmental Sciences Division, Oak Ridge National Laboratory, TN 37831, USA.
| | - Pupu Guo
- College of Tourism, Shanghai Normal University, Shanghai 200234, PR China
| | - Ying Zeng
- College of Tourism, Shanghai Normal University, Shanghai 200234, PR China
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21
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Dai T, Zhang Y, Tang Y, Bai Y, Tao Y, Huang B, Wen D. Identifying the key taxonomic categories that characterize microbial community diversity using full-scale classification: a case study of microbial communities in the sediments of Hangzhou Bay. FEMS Microbiol Ecol 2016; 92:fiw150. [PMID: 27402713 DOI: 10.1093/femsec/fiw150] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2016] [Indexed: 01/26/2023] Open
Abstract
Coastal areas are land-sea transitional zones with complex natural and anthropogenic disturbances. Microorganisms in coastal sediments adapt to such disturbances both individually and as a community. The microbial community structure changes spatially and temporally under environmental stress. In this study, we investigated the microbial community structure in the sediments of Hangzhou Bay, a seriously polluted bay in China. In order to identify the roles and contribution of all microbial taxa, we set thresholds as 0.1% for rare taxa and 1% for abundant taxa, and classified all operational taxonomic units into six exclusive categories based on their abundance. The results showed that the key taxa in differentiating the communities are abundant taxa (AT), conditionally abundant taxa (CAT), and conditionally rare or abundant taxa (CRAT). A large population in conditionally rare taxa (CRT) made this category collectively significant in differentiating the communities. Both bacteria and archaea demonstrated a distance decay pattern of community similarity in the bay, and this pattern was strengthened by rare taxa, CRT and CRAT, but weakened by AT and CAT. This implied that the low abundance taxa were more deterministically distributed, while the high abundance taxa were more ubiquitously distributed.
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Affiliation(s)
- Tianjiao Dai
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Yan Zhang
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Yushi Tang
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Yaohui Bai
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yile Tao
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Bei Huang
- Zhejiang Provincial Zhoushan Marine Ecological Environmental Monitoring Station, Zhoushan 316021, China
| | - Donghui Wen
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
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22
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Zhang Y, Chen L, Sun R, Dai T, Tian J, Zheng W, Wen D. Temporal and spatial changes of microbial community in an industrial effluent receiving area in Hangzhou Bay. J Environ Sci (China) 2016; 44:57-68. [PMID: 27266302 DOI: 10.1016/j.jes.2015.11.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 05/11/2015] [Revised: 10/30/2015] [Accepted: 11/25/2015] [Indexed: 06/06/2023]
Abstract
Anthropogenic activities usually contaminate water environments, and have led to the eutrophication of many estuaries and shifts in microbial communities. In this study, the temporal and spatial changes of the microbial community in an industrial effluent receiving area in Hangzhou Bay were investigated by 454 pyrosequencing. The bacterial community showed higher richness and biodiversity than the archaeal community in all sediments. Proteobacteria dominated in the bacterial communities of all the samples; Marine_Group_I and Methanomicrobia were the two dominant archaeal classes in the effluent receiving area. PCoA and AMOVA revealed strong seasonal but minor spatial changes in both bacterial and archaeal communities in the sediments. The seasonal changes of the bacterial community were less significant than those of the archaeal community, which mainly consisted of fluctuations in abundance of a large proportion of longstanding species rather than the appearance and disappearance of major archaeal species. Temperature was found to positively correlate with the dominant bacteria, Betaproteobacteria, and negatively correlate with the dominant archaea, Marine_Group_I; and might be the primary driving force for the seasonal variation of the microbial community.
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Affiliation(s)
- Yan Zhang
- School of Environment, Tsinghua University, Beijing 100084, China; Zhejiang Shuangyi Environmental Technology Development Co., Ltd., Jiaxing 314000, China
| | - Lujun Chen
- School of Environment, Tsinghua University, Beijing 100084, China; Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314050, China
| | - Renhua Sun
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Tianjiao Dai
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Jinping Tian
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Wei Zheng
- Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314050, China
| | - Donghui Wen
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
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23
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Shen LD, Hu BL, Liu S, Chai XP, He ZF, Ren HX, Liu Y, Geng S, Wang W, Tang JL, Wang YM, Lou LP, Xu XY, Zheng P. Anaerobic methane oxidation coupled to nitrite reduction can be a potential methane sink in coastal environments. Appl Microbiol Biotechnol 2016; 100:7171-80. [PMID: 27225473 DOI: 10.1007/s00253-016-7627-0] [Citation(s) in RCA: 36] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/01/2016] [Accepted: 05/07/2016] [Indexed: 12/14/2022]
Abstract
In the current study, we investigated nitrite-dependent anaerobic methane oxidation (N-DAMO) as a potential methane sink in the Hangzhou Bay and the adjacent Zhoushan sea area. The potential activity of the N-DAMO process was primarily observed in Hangzhou Bay by means of (13)C-labeling experiments, whereas very low or no potential N-DAMO activity could be detected in the Zhoushan sea area. The measured potential N-DAMO rates ranged from 0.2 to 1.3 nmol (13)CO2 g(-1) (dry sediment) day(-1), and the N-DAMO potentially contributed 2.0-9.4 % to the total microbial methane oxidation in the examined sediments. This indicated that the N-DAMO process may be an alternative pathway in the coastal methane cycle. Phylogenetic analyses confirmed the presence of Candidatus Methylomirabilis oxyfera-like bacteria in all the examined sediments, while the group A members (the dominant bacteria responsible for N-DAMO) were found mainly in Hangzhou Bay. Quantitative PCR showed that the 16S rRNA gene abundance of Candidatus M. oxyfera-like bacteria varied from 5.4 × 10(6) to 5.0 × 10(7) copies g(-1) (dry sediment), with a higher abundance observed in Hangzhou Bay. In addition, the overlying water NO3 (-) concentration and salinity were identified as the most important factors influencing the abundance and potential activity of Candidatus M. oxyfera-like bacteria in the examined sediments. This study showed the evidence of N-DAMO in coastal environments and indicated the importance of N-DAMO as a potential methane sink in coastal environments.
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Affiliation(s)
- Li-Dong Shen
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Bao-Lan Hu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China.
| | - Shuai Liu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Xiao-Ping Chai
- Zhejiang Provincial Zhoushan Marine Ecological Environmental Monitoring Station, Zhoushan, 316021, China
| | - Zhan-Fei He
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Hong-Xing Ren
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Yan Liu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Sha Geng
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Wei Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Jing-Liang Tang
- Zhejiang Provincial Zhoushan Marine Ecological Environmental Monitoring Station, Zhoushan, 316021, China
| | - Yi-Ming Wang
- Zhejiang Provincial Zhoushan Marine Ecological Environmental Monitoring Station, Zhoushan, 316021, China
| | - Li-Ping Lou
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Xiang-Yang Xu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Ping Zheng
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
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24
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Zhang Y, Chen L, Sun R, Dai T, Tian J, Zheng W, Wen D. Population and diversity of ammonia-oxidizing archaea and bacteria in a pollutants' receiving area in Hangzhou Bay. Appl Microbiol Biotechnol 2016; 100:6035-45. [PMID: 26960319 DOI: 10.1007/s00253-016-7421-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/20/2016] [Accepted: 02/24/2016] [Indexed: 12/19/2022]
Abstract
The community structure of ammonia-oxidizing microorganisms is sensitive to various environmental factors, including pollutions. In this study, real-time PCR and 454 pyrosequencing were adopted to investigate the population and diversity of ammonia-oxidizing archaea (AOA) and bacteria (AOB) temporally and spatially in the sediments of an industrial effluent receiving area in the Qiantang River's estuary, Hangzhou Bay. The abundances of AOA and AOB amoA genes fluctuated in 10(5)-10(7) gene copies per gram of sediment; the ratio of AOA amoA/AOB amoA ranged in 0.39-5.52. The AOA amoA/archaeal 16S rRNA, AOB amoA/bacterial 16S rRNA, and AOA amoA/AOB amoA were found to positively correlate with NH4 (+)-N concentration of the seawater. Nitrosopumilus cluster and Nitrosomonas-like cluster were the dominant AOA and AOB, respectively. The community structures of both AOA and AOB in the sediments exhibited significant seasonal differences rather than spatial changes in the effluent receiving area. The phylogenetic distribution of AOB in this area was consistent with the wastewater treatment plants (WWTPs) discharging the effluent but differed from the Qiantang River and other estuaries, which might be an outcome of long-term effluent discharge.
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Affiliation(s)
- Yan Zhang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Lujun Chen
- School of Environment, Tsinghua University, Beijing, 100084, China.,Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, Zhejiang, 314050, China
| | - Renhua Sun
- College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.,Rural Energy & Environment Agency, Ministry of Agriculture, Beijing, 100125, China
| | - Tianjiao Dai
- College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Jinping Tian
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Wei Zheng
- Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, Zhejiang, 314050, China
| | - Donghui Wen
- College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.
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25
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Li W, Yang H, Jiang X, Liu Q, Sun Y, Zhou J. Residues and Distribution of Organochlorine Pesticides in Water and Suspended Particulate Matter from Hangzhou Bay, East China Sea. Bull Environ Contam Toxicol 2016; 96:295-302. [PMID: 26825782 DOI: 10.1007/s00128-016-1739-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 02/17/2015] [Accepted: 01/19/2016] [Indexed: 06/05/2023]
Abstract
The concentrations, distribution, and possible sources of organochlorine pesticides (OCPs) in Hangzhou Bay, East China Sea, were studied by analyzing water column and suspended particulate matter (SPM) samples from 13 sites. The results showed that OCP contamination remains widespread in the area. The OCP concentrations were 2.52-27.99 ng/L in the SPM samples and 1.35-26.36 ng/L in the water column samples. Pattern analysis suggested that both fresh and weathered hexachlorocyclohexane (HCH) were present. Low α-HCH/γ-HCH ratios and high β-HCH and γ-HCH levels contributed to the total HCH concentrations in both the water column and SPM samples. High p,p'-dichlorodiphenyltrichloroethane (DDT)/o,p'-DDT ratios and low (dichlorodiphenyldichloroethylene + dichlorodiphenyldichloroethane)/DDT ratios were found, reflecting a "dicofol-type" DDT input pattern, This suggested that new DDT inputs are occurring because of dicofol still being used in the area.
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Affiliation(s)
- Weidong Li
- Department of Science and Technology, Qianjiang College of Hangzhou Normal University, No. 16 Xuelin Road, Jiang gan District, Hangzhou, 310036, China.
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, 310032, China.
| | - Huayun Yang
- Department of Science and Technology, Qianjiang College of Hangzhou Normal University, No. 16 Xuelin Road, Jiang gan District, Hangzhou, 310036, China
| | - Xia Jiang
- Department of Science and Technology, Qianjiang College of Hangzhou Normal University, No. 16 Xuelin Road, Jiang gan District, Hangzhou, 310036, China
| | - Qi Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yan Sun
- Department of Science and Technology, Qianjiang College of Hangzhou Normal University, No. 16 Xuelin Road, Jiang gan District, Hangzhou, 310036, China
| | - Jiazhong Zhou
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, 310032, China
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Fang H, Huang L, Wang J, He G, Reible D. Environmental assessment of heavy metal transport and transformation in the Hangzhou Bay, China. J Hazard Mater 2016; 302:447-457. [PMID: 26521090 DOI: 10.1016/j.jhazmat.2015.09.060] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [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: 04/22/2015] [Revised: 09/16/2015] [Accepted: 09/27/2015] [Indexed: 05/11/2023]
Abstract
The environmental impact of heavy metal (Cu, Cd, Zn, Pb, Ni, (90)Sr and (137)Cs) transport and transformation in the Hangzhou Bay (China) was assessed through a comprehensive model that integrates hydrodynamics, sediment and heavy metal transport. A mechanistic surface complexation model was used to estimate the adsorption and desorption of heavy metal by suspended sediment under different aqueous chemistry conditions. The dynamics of metal exchange to and from the seabed was also assessed. The primary processes regulating heavy metal distribution, i.e., convection-diffusion, adsorption-desorption, sedimentation-resuspension, as well as other physical and chemical processes related to mass exchange between adjacent sediment layers, were considered in detail. The accidental discharge of (137)Cs was simulated as an example and results showed that (137)Cs transported along the coast driven by tidal flow. Most (137)Cs distributed near the outfall and accumulated in the seabed sediment. The proposed model can be a useful tool for predicting heavy metal transport and fate and provide a theoretical basis to guide field sampling, assessment of risks and the design of remediation strategies.
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Affiliation(s)
- Hongwei Fang
- The State Key Laboratory of Hydro Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, PR China
| | - Lei Huang
- The State Key Laboratory of Hydro Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, PR China
| | - Jingyu Wang
- The State Key Laboratory of Hydro Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, PR China
| | - Guojian He
- The State Key Laboratory of Hydro Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, PR China
| | - Danny Reible
- Department of Civil & Environmental Engineering, Texas Tech University, Lubbock, TX 79409-1023, United States.
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