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pollution and health risk assessment of heavy metals in soils of Guizhou,China

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Ecosystem Health and Sustainability 2021年第1期7卷 6-17页

作者： Gao Yu Fen Chen Hongli Zhang Zuhua Wang College of Agroforestry Engineering and Planning Tongren UniversityTongrenPeople’s Republic of China Key Laboratory of Original Agro-Environmental Pollution Prevention and Control Ministry of Agriculture and Rural Affairs/Tianjin Key Laboratory of Agro-environment and Safe-productTianjinPeople’s Republic of China Remote Sensing Monitoring Department Geo-Compass Information Technology CompanyLTDBeijingPeople’s Republic of China

Mining of minerals in Guizhou,China,where it is enriched with reserves,may lead to soil contamination with heavy *** assessed the risk of eight typical heavy metals in Guizhou soils by collecting province-wide data available in the literature and using the geo-accumulation index method,the ecological risk assessment method,and the USEPA health risk assessment *** concentrations of eight heavy metals,except for Pb and Cr,were above the background *** heavy metal pollution evaluation results showed that As,Cu,Zn,Pb,Cr,Cd,and Ni reached the pollution levels,while Hg fell into the category of moderate ***,Cu,Zn,Pb,Cr,and Ni posed low potential ecological risk,while Cd and Hg demonstrated a considerable or a very high potential ecological ***,the integrated potential ecological risk was ranked“very high”.Regarding to health risk,the non-carcinogenic risks caused by heavy metals were insignificant,but the carcinogenic risk caused by As was ***,there appeared serious soil contamination of Hg and As,with the latter also being the greatest potential risk to human *** Hg and As should stay at the highest priory for remediation efforts in Guizhou soils.

关键词： Heavy metals geo-accumulation index potential ecological risk human health risk

Bisphenol a Decreases the Developmental Toxicity and Histopathological Alterations Caused by Nanoplastics in Developing Marine Medaka Oryzias Melastigma

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SSRN 2023年

作者： Yu, Fuwei Jin, Fei Cong, Yi Lou, Yadi Li, Zhaochuan Li, Ruijing Ding, Baojun Wang, Ying Chen, Jingwen Wang, Juying School of Chemical Engineering Dalian University of Technology Dalian116024 China Marine Debris and Microplastic Research Center Department of Marine Chemistry National Marine Environmental Monitoring Center Dalian116023 China Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology School of Environmental Science and Technology Dalian University of Technology Dalian116024 China

Nanoplastics (NPs) are emerging pollutants posing risks to marine biota and human health due to their small size and high bioavailability. However, there are still knowledge gaps regarding effects of co-existing pollutants on NPs toxicity to marine organisms at their respective environmentally relevant concentrations. Herein we investigated developmental toxicity and histopathological alterations caused by co-exposure of polystyrene nanoplastics (PS-NPs) and bisphenol A (BPA) to marine medaka, Oryzias melastigma. Embryos at 6 hours post-fertilization were exposed to 50-nm PS-NPs (55 μg/L) or BPA (100 μg/L) or co-exposed to a combination of both. Results showed that PS-NPs exhibited decreased embryonic heart rate, larval body length, and embryonic survival as well as larval deformities such as hemorrhaging and craniofacial abnormality. When co-exposed, BPA mitigated all the developmental adverse effects caused by PS-NPs. PS-NPs also led to an increase in histopathological condition index of liver with early inflammatory responses, while co-exposure of BPA with PS-NPs did not. Our data suggest that the toxicity reduction of PS-NPs in the presence of BPA might result from the decrease of their bioavailable concentrations caused by the adsorption of BPA by PS-NPs. This study unveiled the impact of BPA on the toxicity of nanoplastics in marine fish during early developmental stages and highlight the need of more research on the long-term effects of complex mixtures in the marine environment by applying omics approaches to better understand the toxicity mechanism. © 2023, The Authors. All rights reserved.

关键词： Fish

Seasonal to interannual prediction of air pollution in China:Review and insight

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Atmospheric and Oceanic Science Letters 2022年第1期15卷 21-26页

作者： Zhicong Yin Huijun Wang Hong Liao Ke Fan Botao Zhou Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjingChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiChina Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjingChina School of Atmospheric Sciences Sun Yat-sen University/Guangdong Province Key Laboratory for Climate Change and Natural Disaster StudiesGuangzhouChina

Complex air pollution problems have resulted in considerable adverse impacts on the environment,human health,and economy in ***,owing to strict regulations since 2013,the air quality has been greatly ***,the prevention of air pollution has entered a critical stage in combination with climate change mitigation in *** seasonal to interannual prediction of air pollution(haze,surface 03,and sandstorms) could support the government in planning for air pollution control on an annual *** from all over the world have made great progress in understanding climate change and the variability of air pollution and associated physical mechanisms in China,which has provided a scientific basis for the development of climate prediction of air *** paper reviews the progress made in air-pollution climate prediction,and gives some critical insights including update of predictand,change of predictability,and development of coupled model.

关键词： Air pollution Climate prediction PM2.5 Ozone Sandstorm

Oxygen Vacancies Induce Boosted Photocarriers Dynamics in Wo3/Ti3c2 Micro-Nano Structures with Enriched 2d-2d Interfaces for Trimethylamine Abatement

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SSRN 2025年

作者： Duan, Zeyu Zhong, Ao Tang, Qijun Wang, Haiqiang Wu, Zhongbiao College of Environmental & Resources Science Zhejiang University Key Laboratory of Environment Remediation and Ecological Health Ministry of Education Hangzhou310058 China Zhejiang Tianlan Environmental Protection Technology Co. Ltd. Zhejiang Provincial Key Laboratory of Air Pollution Monitoring and Synergestic Control Hangzhou311202 China School of Science and Engineering The Chinese University of Hong Kong Guangdong Shenzhen518172 China

Purification of nitrogenous malodorous VOCs using photocatalytic technology is of great importance, but efficient catalysts for nitrogen-containing molecules still need to be developed. Here, we have successfully synthesized WO3/Ti3C2 microstructures with enriched 2D-2D interfaces and reported boosted photogenerated carrier dynamics induced by oxygen vacancies at the interfaces using trimethylamine as a model for nitrogen-containing pollutants. Experimental results and theoretical calculations revealed that the oxygen vacancy modification could significantly improve the adsorption of trimethylamine molecules due to the nucleophilic nature of the N atom. In addition, benefiting from the intimate 2D-2D bonding between Ti3C2 MXene and WO3 nanosheets, the electron transport at the interfaces was greatly reinforced, and over 90% elimination of 50 ppm trimethylamine could be achieved within 30 min under visible-light irradiation. This work opens new avenues to construct visible-light-responsive semiconductor materials for nitrogen-containing VOCs’removal. © 2025, The Authors. All rights reserved.

关键词： Nanosheets

Biogenic volatile organic compound emissions from leaves and fruits of apple and peach trees during fruit development

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Journal of Environmental Sciences 2021年第10期33卷 152-163页

作者： Shuangjiang Li Xiangyang Yuan Yan Xu Zhengzhen Li Zhaozhong Feng Xu Yue Elena Paoletti Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)School of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China Key Laboratory of Agrometeorology of Jiangsu Province School of Applied MeteorologyNanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Institute of Research on Terrestrial Ecosystems National Council of ResearchVia Madonna del Piano 1050019 Sesto FiorentinoFlorenceItaly

Biogenic volatile organic compounds(BVOCs)are widely involved in a variety of atmospheric chemical processes due to their high reactivity and species *** date,however,research on BVOCs in agroecosystems,particularly fruit trees,remains scarce despite their large cultivation area and economic *** emissions from different organs(leaf or fruit)of apple and peach trees were investigated throughout the stages of fruit development(FS,fruit swelling;FC,fruit coloration;FM,fruit maturity;and FP,fruit postharvest)using a proton-transfer-reaction mass *** indicated that methanol was the most abundant compound emitted by the leaf(apple tree leaf 492.5±47.9 ng/(g·hr),peach tree leaf 938.8±154.5 ng/(g·hr)),followed by acetic acid and green leaf *** the above three compounds,acetaldehyde had an important contribution to the emissions from the ***,the total BVOCs(sum of eight compounds studied in this paper)emitted by both leaf and fruit gradually decreased along the fruit development,although the effect was significant only for the *** leaf(2020.8±258.8 ng/(g·hr))was a stronger BVOC emitter than the fruit(146.0±45.7 ng/(g·hr))(P=0.006),and there were no significant differences in total BVOC emission rates between apple and peach *** findings contribute to our understanding on BVOC emissions from different plant organs and provide important insights into the variation of BVOC emissions across different fruit developmental stages.

关键词： Biogenic volatile organic compounds(BVOCs) Oxygenated VOCs(OVOCs) Fruit trees

Medium and Heavy-Duty Diesel Vehicles are Important Nighttime Ammonia Sources in Chinese Megacities – Evidence from a Tunnel Measurement

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SSRN 2023年

作者： Guo, Jiliang Peng, Jianfei Li, Zongxuan Song, Ainan Tong, Hui Sun, Bin Liang, Xiaoyu Liu, Peiji Zhang, Jinsheng Lv, Zongyan Tang, Jingchun Yang, Ning Du, Zhuofei Zhang, Qijun Wang, Ting Wu, Lin Mao, Hongjun Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control College of Environmental Science and Engineering Nankai University Tianjin300071 China MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation College of Environmental Science and Engineering Nankai University Tianjin300350 China Tianjin Eco-Environmental Monitoring Center Tianjin300191 China

Ammonia (NH3) has been widely recognized as a key precursor of atmospheric secondary aerosol formation. Vehicle emission is a major source of urban atmospheric NH3;but few studies have quantified vehicular NH3 emission from real-world on-road fleets. In this study, a tunnel measurement was conducted in the Wujinglu tunnel in the urban area of Tianjin, China, in September 2021. The fleet-average NH3 emission factor (EF) was 11.2 mg km-1 veh-1, significantly lower than those in previous studies. Through a multiple linear regression analysis, the EFs of light-duty gasoline vehicles (LDGVs), light-duty diesel vehicles (LDDVs), medium and heavy-duty diesel vehicles (M&HDDVs) were estimated to be 5.7 mg km-1 veh-1, 40.8 mg km-1 veh-1, and 223.3 mg km-1 veh-1, respectively. Notably, the M&HDDVs emitted more NH3 than previously expected. The annual NH3 emissions of LDGVs, LDDVs, M&HDDVs were 272, 182, and 292 tons, respectively, within the urban area of Tianjin in 2021. M&HDDVs contributed more than 85% of nighttime vehicular NH3 emissions, with an annual emission of 255t a-1. The potential environmental impacts of the marked nighttime NH3 emissions from M&HDDVs should be considered in future field and modeling studies. © 2023, The Authors. All rights reserved.

关键词： Linear regression

Enhanced Removal of Nickel(Ii) from Water by Utilizing Gel-Type Nanocomposite Containing Sub-5 Nm Hydrated Manganese(Iv) Oxides

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SSRN 2022年

作者： Fang, Zhuoyao Wang, Helan Zhang, Kaizhen Cheng, Sikai Zhang, Xiaolin Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Nanjing University Nanjing210023 China

Efficient decontamination of heavy metals from water remains an urgent and still challenging issue. Herein, a novel adsorbent HMO@N001 was prepared by the in-situ encapsulation of hydrated manganese(IV) oxides (HMO) NPs inside the gel-type cation exchanger N001. Owing to the +, Mg2+, and Ca2+ mainly suppressed the electrostatic adsorption from the N001 host, while the inner-sphere complexation between Ni(II) and HMO NPs was little affected, as verified by the SEM-EDS analysis. The used HMO@N001 was effectively regenerated using 0.05 M dimethylglyoxime solution for cyclic utilization. In fixed-bed experiments, the effective treatment capacity of the HMO@N001 column reached up to ~4200 bed volume (BV), over 1.35 times that of the HMO@D001 column (~3100 BV). This study may provide a promising option for advanced heavy metals decontamination. © 2022, The Authors. All rights reserved.

关键词： Heavy metals

Recent advances in bismuth-based multimetal oxide photocatalysts for hydrogen production from water splitting:Competitiveness,challenges,and future perspectives

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Materials Reports(Energy) 2021年第2期1卷 22-34页

作者： Zheng Zhu Shipeng Wan Yunxia Zhao Yaxin Gu Yaobin Wang Yong Qin Zhihui Zhang Xinlei Ge Qin Zhong Yunfei Bu Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)UNIST-NUIST Research Center of Environment and Energy(UNNU)School of Environmental Science and TechnologyNanjing University of Information Science and Technology(NUIST)210044PR China School of Chemical and Engineering Nanjing University of Science and TechnologyNanjing210094PR China Jiangsu Key Laboratory of Advanced Materials and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhouJiangsu213164PR China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou UniversityChangzhou213164PR China

The efficient utilization of photocatalytic technology is essential for clean ***-based multimetal oxides(Bi_(2)WO_(6),Bi_(2)MoO_(6),BiVO_(4)and Bi_(4)Ti_(3)O_(12))have aroused widespread attention as a visible light responsive photocatalyst for hydrogen evolution due to their low cost,nontoxicity,modifiable morphology,and outstanding optical and chemical ***,the photocatalytic activities of pure materials are unsatisfactory because of their relative small specific surface area,poor quantum yield,and the rapid recombination of photogenerated ***,some modification strategies,including morphological control,semiconductor combination,doping,and defect engineering,have been systematically studied to enhance photocatalytic H_(2)evolution activity in the past few ***,we summarize the recent research progress on bismuth-based photocatalysts,pointing out the prospects,opportunities and challenges of bismuth-based ***,we aims to put forward valuable suggestions for designing of bismuth-based photocatalysts applied in hydrogen production on the premise of consolidating the existing theoretical basis of photocatalysis.

关键词： Bi_(2)WO_(6) Bi_(2)MoO_(6) BiVO_(4) Bi_(4)Ti_(3)O_(12) Morphological control Semiconductor combination Heterojunction Doping Defect Hydrogen production

Development of efficient and economic Bi2O3/BN/Co3O4 composite photocatalyst: Degradation mechanism, pathway and toxicity study of norfloxacin

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Chemosphere 2024年 352卷 141481页

作者： Wang, Ning Wang, Wei Qi, Dan Kang, Guodong Wang, Bo Zhang, Houhu Ruan, Jiuli Lei, Rongrong Zhang, Zhenhua Zhang, Shenghu Zhou, Hao Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Nanjing210042 China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology 219 Ningliu Road Nanjing210044 China State Environmental Protection Key Laboratory of Ecological Industry Chinese Research Academy of Environmental Sciences Beijing100012 China Xinjiang Tianxi Environmental Protection Technology Co. LTD Wulumuqi830026 China

The production of cheap, efficient, and stable photocatalysts for degrading antibiotic contaminants remains challenging. Herein, Bi2O3/boron nitride (BN)/Co3O4 ternary composites were synthesized using the impregnation method. The morphological characteristics, structural features, and photochemical properties of the prepared photocatalysts were investigated via X-ray diffraction, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, and ultraviolet–visible (Vis) diffuse reflectance spectrum techniques. BN was used as a charge transfer bridge in the ternary composites, which afforded a heterojunction between the two semiconductors. The formation of the heterojunction substantially enhanced the charge separation and improved the photocatalyst performance. The degradation activity of the Bi2O3/BN/Co3O4 ternary composites against norfloxacin (NOR) under Vis light irradiation was investigated. The degradation rate of NOR using 5-wt% Bi2O3/BN/Co3O4 reached 98% in 180 min, indicating excellent photocatalytic performance. The ternary composites also exhibited high photostability with a degradation efficiency of 88.4% after five cycles. Hydroxyl radicals (•OH), superoxide radicals (•O2−), and holes (h+) played a synergistic role in the photocatalytic reaction, where h+ and •O2− were more important than •OH. Consequently, seven intermediates and major photocatalytic degradation pathways were identified. Toxicity experiments showed that the toxicity of the degradation solution to Chlorella pyrenoidosa decreased. Finally, the ecotoxicity of NOR and its intermediates were analyzed using the Toxicity Estimation Software Tool, with most intermediates exhibiting low toxicity. © 2024 Elsevier Ltd

关键词： Toxicity