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Cumulative effects of ocean currents and land-based pollution on the abundance and composition of coastal zooplankton

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Marine environmental Research 2025年 209卷 107230页

作者： Wang, Liang-gen Pei, Peng-bing Aslam, Muhammad Li, Tang-cheng Ke, Xiao Yan, Xiu-li Du, Fei-yan Du, Hong Guangdong Provincial Key Laboratory of Marine Biotechnology Marine Biology Institute Shantou University Shantou China Guangdong Provincial Key Laboratory of Fishery Ecology and Environment South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Guangzhou China The Key Laboratory of Water Environment Simulation and Pollution Control Ministry of Ecology and Environment of the People's Republic of China Guangzhou China

Coastal waters pose a serious threat of eutrophication due to land-based pollution. The excess nutrients change the planktonic abundance and composition. Ocean currents dominate the exchange and mixing of seawater to play a particularly important role in shaping zooplankton dispersion. However, the mechanism of zooplankton response to the joint action of currents and land-based pollution in coastal waters is rarely reported. The mechanism was analyzed using partial least squares path models (PLS-PMs) and data from Shantou Bay of the southwestern Taiwan Strait with complex currents and excess land-based nutrients input in 2021. 262 species of zooplankton have been identified, with geometric mean values for seasonal biomass and abundance ranging from 23.79 mg m−3 to 51.27 mg m−3 and 28.48 ind m−3 to 95.51 ind m−3. The seasonal water masses and zooplankton communities were divided into 7 masses and 9 clusters, respectively. Zooplankton abundance and clusters correlate with water masses driven by seasonal variations of currents and runoff. The seasonal patterns of zooplankton dominant species and indicator species directly confirm the currents and runoff changing in seasons. Eutrophication and malnutrition are two additional factors affecting zooplankton communities in the sea. Poor phytoplankton is a key limiting factor in spatial patterns of zooplankton communities during the Northeast Monsoon. Eutrophication threats to the stability of the large zooplankton community. These findings align with the results of PLS-PMs for zooplankton in response to environments, which indicated that zooplankton communities were regulated by currents and land-based pollution inputs altering chemical environments and hydrological conditions. © 2025

关键词： Marine pollution

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Efficient Photothermal Catalytic Oxidation Enabled by Three-Dimensional Nanochannel Substrates

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environmental Science and Technology 2024年第11期58卷 5153-5161页

作者： Li, Yifei Zhang, Qianpeng Chong, Yanan Huang, Wei-Hsiang Chen, Chi-Liang Jin, Xiaojing Chen, Guangxu Fan, Zhiyong Qiu, Yongcai Ye, Daiqi School of Environment and Energy State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangdong Guangzhou510000 China State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University Shanghai200433 China Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon999077 Hong Kong State Key Laboratory of Advanced Displays and Optoelectronics Technologies The Hong Kong University of Science and Technology Clear Water Bay Kowloon999077 Hong Kong National Synchrotron Radiation Research Center 101 Hsin-Ann Road Hsinchu Science Park Hsinchu30076 Taiwan Taipei10607 Taiwan College of Light Chemical Industry and Materials Engineering Shunde Polytechnic Foshan528333 China

Photothermal catalysis exhibits promising prospects to overcome the shortcomings of high-energy consumption of traditional thermal catalysis and the low efficiency of photocatalysis. However, there is still a challenge to develop catalysts with outstanding light absorption capability and photothermal conversion efficiency for the degradation of atmospheric pollutants. Herein, we introduced the Co3O4 layer and Pt nanoclusters into the three-dimensional (3D) porous membrane through the atomic layer deposition (ALD) technique, leading to a Pt/Co3O4/AAO monolithic catalyst. The 3D ordered nanochannel structure can significantly enhance the solar absorption capacity through the light-trapping effect. Therefore, the embedded Pt/Co3O4 catalyst can be rapidly heated and the O2 adsorbed on the Pt clusters can be activated to generate sufficient O2- species, exhibiting outstanding activity for the diverse VOCs (toluene, acetone, and formaldehyde) degradation. Optical characterization and simulation calculation confirmed that Pt/Co3O4/AAO exhibited state-of-the-art light absorption and a notable localized surface plasmon resonance (LSPR) effect. In situ diffuse reflectance infrared Fourier transform spectrometry (in situ DRIFTS) studies demonstrated that light irradiation can accelerate the conversion of intermediates during toluene and acetone oxidation, thereby inhibiting byproduct accumulation. Our finding extends the application of AAO’s optical properties in photothermal catalytic degradation of air pollutants. © 2024 American Chemical Society.

关键词： Catalysis

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Black carbon, soil organic matter molecular signatures under different land uses in Shenyang, China and relationship with PAHs

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Chemosphere 2023年 342卷 140089页

作者： Gao, Han Li, Huixin Shi, Jiaqi Huang, Jianbo Wei, Jing Qu, Xiaolei Long, Tao State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment of China Jiangsu Nanjing210042 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing210023 China

The content, composition and molecular signatures of soil organic matter (SOM) have important influences on the cycle of soil organic carbon (SOC) and the partitioning of polycyclic aromatic hydrocarbons (PAHs) in soil. Seventy-nine soil samples from farmland, forest and urban areas were collected in Shenyang, China to investigate black carbon (BC) content, SOM molecular signatures varied with land use patterns, as well as the relationship with PAHs. The content of BC in urban soils was significantly higher than that of farmland and forest. BC was a key contributor of urban SOM which accounted for 0.35 ± 0.31 of SOC in urban soil. Based on BC/SOC ratio, the main sources of BC were identified as fossil fuel combustion for urban soils, while for farmland and forest soils, it is the mixed results of fossil fuel combustion and biomass burning. All categories of PAHs in urban soils showed the highest level compared to farmland and forest soils. Pearson's correlation analysis results showed there were significant positive correlations between BC and PAHs categories in urban soils, indicating the important role of BC in the accumulation of PAHs in soil. SOM from each of the two different land use patterns can be distinguished by molecular signatures. Urban SOM had abundant molecular markers derived from condensed organic carbon inputs, which was consistent with the BC/SOC value. Farmland SOM had abundant carbon from vegetation and microorganisms, and forest SOM was rich in organic carbon from fresh plant materials. The markers enriched in urban SOM showed significant correlations with most PAHs categories, highlighting the affinity of urban SOM for PAHs at the molecular level. This study contributed to understanding the impact of land management methods on SOM molecular composition signatures and its influence on PAHs occurrence in soil, providing a theoretical basis for regional soil pollution management. © 2023 Elsevier Ltd

关键词： Polycyclic aromatic hydrocarbons

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Carbendazim residue in plant-based foods in China:Consecutive surveys from 2011 to 2020

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environmental Science and Ecotechnology 2024年第1期17卷 109-118页

作者： Dou Wang Guiling Yang Xiao Yun Ting Luo Hao Guo Liying Pan Wei Du Yanhua Wang Qiang Wang Pu Wang Qinghua Zhang Yun Li Nan Lin State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Laboratory(Hangzhou)for Risk Assessment of Agricultural Products of Ministry of AgricultureInstitute of Agro-product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhou310021ZhejiangChina College of Urban and Environmental Sciences Peking UniversityBeijing100871China Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science&EngineeringKunming University of Science&TechnologyKunming650500China Hubei Key Laboratory of Industrial Fume and Dust Pollution Control School of Environment and HealthJianghan UniversityWuhan430056China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture Institute of Quality Standards and Testing Technology for Agro-ProductsChinese Academy of Agricultural SciencesBeijing100081China Department of Environmental Health School of Public HealthShanghai Jiao Tong UniversityShanghai200025China

Carbendazim,a widely used fungicide in China,has been found to have reproductive toxicity and mutagenic ***,information on the spatial-temporal variations of carbendazim residues in food in China is ***,we investigated the presence of carbendazim in China's plant-based foods from 2011 to 2020,evaluated the spatial-temporal characteristics,and assessed the associated exposure risks in the Chinese *** results revealed a high detection frequency of carbendazim in fruits(26.4%)and high concentrations in vegetables(~110 mg kg^(-1)),indicating widespread misuse of the *** acute risks of consuming certain vegetables and cereals exceeded the recommended limits by up to 12 and 5 times,*** there has been a decline in carbendazim residue levels in food since the implementation of the Chinese government's action plan for zero growth of pesticide use in 2015,some provinces still exhibited high levels of carbendazim in multiple food categories,which were positively correlated with annual pesticide *** highlight that carbendazim contamination reflects the broader issue of pesticide use in *** emphasizes the need for committed and targeted national policies to reduce carbendazim residues in food and suggests that such measures could also regulate the use of other pesticides,given that pesticide abuse in China is not limited to specific *** call for the re-evaluation of maximum residue limits of carbendazim,particularly in highly consumed foods such as cereals.

关键词： Carbendazim Plant-based foods China Spatial-temporal variations Exposure and risk assessment

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A global perspective on e-waste recycling

Circular Economy

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Circular Economy 2023年第1期2卷

作者： Liu, Kang Tan, Quanyin Yu, Jiadong Wang, Mengmeng State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hung Hom KowloonHong Kong China

Electronic waste (e-waste) is one of the relatively fast-growing solid waste streams, with an annual growth rate of 3%–5%. Although international policies have been formulated to better limit the global transboundary movement of hazardous waste, the existence of illegal trade and "informal" recycling has exacerbated the global recycling of e-waste. At present, residents in many low-income areas are still illegally and unscientifically disposing of e-waste to profit from it. The toxic and harmful substances produced affect the global ecological environment through the geochemical cycle. In this review, we provide a systematic overview of the status quo of e-waste recycling globally. E-waste is placed into a framework, grouped by product type, quantity, composition, environmental health risk, and global impact. Management measures, legislative policies, current disposal, and transboundary movement are summarized at international, regional, and national levels, illustrating the status and challenges of e-waste collection and disposal. Techniques such as physical dismantling, component recycling, metal extraction, and re-utilization of non-metallic materials are described, which can have long-term impact on the ecosystem. We advocate that the global sustainable recycling of e-waste be supported by regional cooperation, legislative management, technology development, and eco-friendly design. This study provides a global solution for the recycling of e-waste. © 2023 The Author(s)

关键词： Electronic Waste

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Evaluation of the Rainfall Characteristics Impact on the Resilience of Urban Drainage Systems

SSRN

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SSRN 2024年

作者： Wang, Hao Lian, Mengyuan Chu, Haibo Chen, Bin Zhou, Jinjun Faculty of Architecture Civil and Transportation Engineering Beijing University of Technology Beijing100124 China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University 100875 China

The urbanization and climate change have intensified the challenges to urban drainage infrastructure. Researching the flood resilience of drainage systems, and understanding their resistance and recovery processes during disasters, holds significant scientific importance for resilient city studies. This research has proposed an integral-based method to calculate the UDS resilience. Firstly, we computed the system performance curve by the integral-based method and compared calculation results with the simplified rectangular method. Subsequently, we obtained the indicators to represent the resilience of the UDS process for comprehensive evaluations by nearly 70 years of historical measured rainfall data. Lastly, the Spearman correlation analysis was employed to assess the impact of rainfall characteristics on resilience. The results indicated that the resilience calculated by the integral-based method is more realistic compared with the simplified rectangular method. The resilience of the UDS is influenced by characteristics of the catchments. Rainfall, average rainfall intensity, and peak rainfall intensity have a greater impact on resilience. © 2024, The Authors. All rights reserved.

关键词： Floods

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The missing base molecules in atmospheric acid-base nucleation

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National Science Review 2022年第10期9卷 196-208页

作者： Runlong Cai Rujing Yin Chao Yan Dongsen Yang Chenjuan Deng Lubna Dada Juha Kangasluoma Jenni Kontkanen Roope Halonen Yan Ma Xiuhui Zhang Pauli Paasonen Tuukka Pet?j? Veli-Matti Kerminen Yongchun Liu Federico Bianchi Jun Zheng Lin Wang Jiming Hao James N.Smith Neil M. Donahue Markku Kulmala Douglas R.Worsnop Jingkun Jiang State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Institute for Atmospheric and Earth System Research/Physics Faculty of Science University of Helsinki Aerosol and Haze Laboratory Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and Technology Laboratory of Atmospheric Chemistry Paul Scherrer Institute Center for Joint Quantum Studies and Department of Physics School of Science Tianjin University Key Laboratory of Cluster Science Ministry of Education of China School of Chemistry and Chemical Engineering Beijing Institute of Technology Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) Department of Environmental Science and Engineering Fudan University Chemistry Department University of California Center for Atmospheric Particle Studies Carnegie Mellon University Department of Chemistry Carnegie Mellon University Aerodyne Research Inc.

Transformation of low-volatility gaseous precursors to new particles affects aerosol number concentration,cloud formation and hence the *** clustering of acid and base molecules is a major mechanism driving fast nucleation and initial growth of new particles in the ***,the acid-base cluster composition,measured using state-of-the-art mass spectrometers,cannot explain the measured high formation rate of new *** we present strong evidence for the existence of base molecules such as amines in the smallest atmospheric sulfuric acid clusters prior to their detection by mass *** demonstrate that forming（H2SO4）1（amine）1is the rate-limiting step in atmospheric H2SO4-amine nucleation and the uptake of（H2SO4）1（amine）1is a major pathway for the initial growth of *** proposed mechanism is very consistent with measured new particle formation in urban Beijing,in which dimethylamine is the key base for H2SO4nucleation while other bases such as ammonia may contribute to the growth of larger *** findings further underline the fact that strong amines,even at low concentrations and when undetected in the smallest clusters,can be crucial to particle formation in the planetary boundary layer.

关键词： new particle formation acid-base nucleation aerosol polluted urban environment

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Refining the Factors Affecting N_(2)O Emissions from Upland Soils with and without Nitrogen Fertilizer Application at a Global Scale

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Advances in Atmospheric Sciences 2024年第9期41卷 1804-1820页

作者： Wenqian JIANG Siqi LI Yong LI Meihui WANG Bo WANG Ji LIU Jianlin SHEN Xunhua ZHENG State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Key Laboratory for Agro-ecological Processes in Subtropical Regions Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Changsha Research Station for Agricultural&Environmental Monitoring Chinese Academy of SciencesChangsha 410125China University of Chinese Academy of Sciences Beijing 100049China State Environmental Protection Key Laboratory of Formation and Prevention of the Urban Air Pollution Complex Shanghai Academy of Environment SciencesShanghai 200233China Institute of Carbon Neutrality Qilu ZhongkeJinan 251699China Hubei Province Key Laboratory for Geographical Process Analysis and Simulation Central China Normal UniversityWuhan 430079China Department of Ecohydrology Leibniz Institute of Freshwater Ecology and Inland FisheriesBerlin 12587Germany Key laboratory of Environment Change and Resources Use in Beibu Gulf Ministry of EducationNanning Normal UniversityNanning 530001China Golden Mantis school of Architecture Soochow UniversitySuzhou 215123China

Nitrous oxide(N_(2)O)is a long-lived greenhouse gas that mainly originates from agricultural *** and more studies have explored the sources,influencing factors and effective mitigation measures of N_(2)O in recent ***,the hierarchy of factors influencing N_(2)O emissions from agricultural soils at the global scale remains *** this study,we carry out correlation and structural equation modeling analysis on a global N_(2)O emission dataset to explore the hierarchy of influencing factors affecting N_(2)O emissions from the nitrogen(N)and non-N fertilized upland farming systems,in terms of climatic factors,soil properties,and agricultural *** results show that the average N_(2)O emission intensity in the N fertilized soils(17.83 g N ha^(-1)d^(-1))was significantly greater than that in the non-N fertilized soils(5.34 g N ha^(−1) d^(−1))(p<0.001).Climate factors and agricultural practices are the most important influencing factors on N_(2)O emission in non-N and N fertilized upland soils,*** different climatic zones,without fertilizer,the primary influence factors on soil N_(2)O emissions are soil physical properties in subtropical monsoon zone,whereas climatic factors are key in the temperate *** fertilizer,the primary influence factors for subtropical monsoon and temperate continental zones are soil physical properties,while agricultural measures are the main factors in the temperate monsoon *** enhanced agricultural practices,such as reduced N fertilizer rate combined with the addition of nitrification and urease inhibitors can potentially mitigate N_(2)O emissions by more than 60%in upland farming systems.

关键词： N_(2)O emissions influencing factors nitrogen cycling upland farming systems

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Degradation of Enrofloxacin Antibiotic by Ultraviolet Activated Persulfate Advanced Oxidation Process: Inorganic Anions Effects and Mechanisms 6th

Degradation of Enrofloxacin Antibiotic by Ultraviolet Activa...

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6th International Symposium on Water Resource and environmental Management, WREM 2023

作者： Chen, Juxiang Wang, Kai Xie, Wanying Gao, Yuqiong Liao, Zhenliang Gao, Naiyun College of Civil Engineering and Architecture Xinjiang University Xinjiang Urumqi830017 China School of Environment and Architecture Shanghai University of Technology Shanghai200093 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

ISBN: (纸本)9783031559884

Enrofloxacin (ENR) is continually detected in natural water environment, becoming one threaten if treating untimely. Performance and mechanism of ENR degradation by ultraviolet (UV)/persulfate (PDS) technology was systematically investigated. Degradation efficiency by UV/PDS was 5.4 times of UV alone, due to the higher rate constant (kobs) of 5.848 × 10–2 min−1. Quencher experiments showed, ·SO4- and ·OH were the major free radicals generated by UV/PDS, and the corresponding contribution rate on degrading ENR was 65.2 and 17.2%. Results of electrical energy per order (EE/O) demonstrated, UV/PDS was less energy consumption and more economical. Moreover, when high concentration of Cl- (10 mM) or low concentration of NO3- (1 mM) co-existed with ENR, the degradation capability by UV/PDS process was slightly promoted, while the negatively effect of CO32- was obvious. Using density functional theory (DFT) and Fukui functions to analyze the possible active sites of ENR, and the results illustrated that C28 and C30 on piperazine ring of ENR was attacked by UV/PDS process, according to the effect of substitution and de-alkylation. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Free radicals

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Al and Mn speciation changes during the pre-oxidation with potassium permanganate and coagulation removing natural organic matter and its membrane fouling behavior

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Chemosphere 2024年 346卷 140641页

作者： Yang, Min Li, Kun Wang, Tianyu Liu, Ruiping Hu, Chengzhi Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China University of Chinese Academy of Sciences Beijing100049 China

In this study, we systematically explore coagulation behavior, ultrafiltration membrane fouling behavior and the mechanism involved in during the process of pre-oxidation of potassium permanganate and coagulation of aluminum chloride at different condition to treat model pollutants (humic acid, HA) and natural water. The KMnO4 pre-oxidation significantly enhances flocs formation, and for HA artificial water the flocs size increases from 82 to 122 μm at pH 5.5, from 63 to 185 μm at pH 7.0 and from 0 to 75 μm at pH 8.5, respectively, as for natural water it increases from 72 to 139 μm. The enhanced coagulation at pH 5.5 is attributed to the increased polymeric Al speciation after pre-oxidation along with the generated Mn2+ damaging the electric double layer structure. And for pH 8.5 it is mainly caused by the in-situ MnO2 as combination nuclei during pre-oxidation. Besides, for pH 7.0, the combined effect of in-situ MnO2 and the increased polymeric Al speciation both contribute to improvement of the coagulation. What's more, the enhanced Al coagulation by pre-oxidation of KMnO4 also helps alleviate the membrane fouling for both HA artificial water and natural water, and a much rougher surface with larger flocs forms after KMnO4-aided Al coagulation filtration. This study provides an alternative perspective on the mechanism of pre-oxidation coagulation process. © 2023 Elsevier Ltd

关键词： Coagulation

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