检索结果-内蒙古大学图书馆

Microplastics in soils: Production, behavior process, impact on soil organisms, and related toxicity mechanisms

Chemosphere 2024年 350卷 141060页

作者： Li, Kun Xiu, Xiaojia Hao, Wanqi School of Environmental Science and Engineering Nanjing University of Information Science and Technology Nanjing210044 China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology China Changwang School of Honors Nanjing University of Information Science and Technology Nanjing210044 China

In recent years, microplastics (MPs) pollution has become a hot ecological issue of global concern and MP pollution in soil is becoming increasingly serious. Studies have shown that MPs have adverse effects on soil biology and ecological functions. Although MPs are evident in soils, identifying their source, abundance, and types is difficult because of the complexity and variability of soil components. In addition, the effects of MPs on soil physicochemical properties (PCP), including direct effects such as direct interaction with soil particles and indirect effects such as the impact on soil organisms, have not been reported in a differentiated manner. Furthermore, at present, the soil ecological effects of MPs are mostly based on biological toxicity reports of their exudate or size effects, whereas the impact of their surface-specific properties (such as environmentally persistent free radicals, surface functional groups, charge, and curvature) on soil ecological functions is not fully understood. Considering this, this paper reviews the latest research findings on the production and behavioral processes of MPs in soil, the effects on soil PCP, the impacts on different soil organisms, and the related toxic mechanisms. The above discussion will enhance further understanding of the behavioral characteristics and risks of MPs in soil ecosystems and provide some theoretical basis for further clarification of the molecular mechanisms of the effects of MPs on soil organisms. © 2023 Elsevier Ltd

关键词： Soils

来源：评论

学校读者我要写书评

暂无评论

An Ensemble Machine Learning Approach for Predicting Sources of Organic Aerosols Measured by Aerosol Mass Spectrometry

ACS ES&T Air

引用

ACS ES&T Air 2025年第3期2卷 378-385页

作者： Yunjiang Zhang Jie Fang Qingxiao Meng Xinlei Ge Hasna Chebaicheb Olivier Favez Jean-Eudes Petit 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 and Technology Nanjing 210044 China；Institut National de l’Environnement Industriel et des Risques Verneuil-en-Halatte 60550 France 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 and Technology Nanjing 210044 China Institut National de l’Environnement Industriel et des Risques Verneuil-en-Halatte 60550 France Laboratoire des Sciences du Climat et de l’Environnement CEA/Orme des Merisiers Gif sur Yvette 91191 France

Long-term source apportionment of atmospheric organic aerosols (OA) is essential for supporting air pollution management strategies. While aerosol mass spectrometry (AMS) combined with traditional source apportionment tools can accurately identify various OA sources, they face efficiency challenges when processing large volumes of long-term data. This study proposes an ensemble machine learning approach to efficiently apportion OA sources from long-term AMS measurements. Using six-year observation of a simplified version of AMS (i.e., ACSM) in the Paris region along with OA factor data derived from positive matrix factorization analysis, we developed an ensemble machine learning source apportionment model. Compared to individual machine learning algorithms, the ensemble model substantially reduced the root-mean-square error (RMSE) and increased the correlation coefficient in predicting OA sources by approximately 30% and 5%, respectively. Sensitivity analysis with five years of baseline data revealed that model performance relatively stabilizes when the training data exceeds two years, with RMSE values for primary and secondary OA factors at 0.31–0.45 μg/m3and 0.69–0.84 μg/m3, respectively. This ensemble model not only enhances the efficiency of long-term OA source apportionment but also holds potential for near-real-time online applications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Clean air captures attention whereas pollution distracts:evidence from brain activities

引用

Frontiers of environmental Science & Engineering 2024年第4期18卷 5-15页

作者： Jianxun Yang Yunqi Liu Berry van den Berg Susie Wang Lele Chen Miaomiao Liu Jun Bi State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing 210044China Nanjing Foreign Language School Nanjing 210008China Department of Experimental Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands Department of Social Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands School of Education Science Nantong UniversityNantong 226019China

Awareness of the adverse impact of air pollution on attention-related performance such as learning and driving is rapidly ***,there is still little known about the underlying neurocognitive *** an adapted dot-probe task paradigm and event-related potential(ERP)technique,we investigated how visual stimuli of air pollution influence the attentional allocation *** were required to make responses to the onset of a target presented at the left or right visual *** probable location of the target was forewarned by a cue(pollution or clean air images),appearing at either the target location(attention-holding trials)or the opposite location(attention-shifting trials).Behavioral measures showed that when cued by pollution images,subjects had higher response accuracy in attention-shifting *** analysis results revealed that after the cue onset,pollution images evoked lower N300 amplitudes,indicating less attentioncapturing effects of dirty *** the target onset,pollution cues were correlated with the higher P300 amplitudes in attention-holding trials but lower amplitudes in attention-shifting *** indicates that after visual exposure to air pollution,people need more neurocognitive resources to maintain attention but less effort to shift attention *** findings provide the first neuroscientific evidence for the distracting effect of air *** conclude with several practical implications and suggest the ERP technique as a promising tool to understand human responses to environmental stressors.

关键词： Air pollution Attention Disengagement Performance Event-related potential

来源：评论

学校读者我要写书评

暂无评论

Photodegradation fate of different dissociation species of antidepressant paroxetine and the effects of metal ion Mg2+: Theoretical basis for direct and indirect photolysis

引用

Chemosphere 2023年第1期335卷

作者： Lu, Ying Wang, Se Shen, Yifan Hao, Ce School of Environmental Science and Engineering Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science and Technology Nanjing210044 China State Key Laboratory of Fine Chemicals Dalian University of Technology Liaoning Dalian116024 China

Paroxetine (abbreviated as PXT) has been widely used as one of the standard antidepressants for the treatment of depression. PXT has been detected in the aqueous environment. However, the photodegradation mechanism of PXT remains unclear. The present study aimed to use density functional theory and time-dependent density functional theory to study the photodegradation process of two dissociated forms of PXT in water. The main mechanisms include direct and indirect photodegradation via reaction with ·OH and 1O2 and photodegradation mediated by the metal ion Mg2+. Based on the calculations, PXT and PXT-Mg2+ complexes in water are photodegraded mainly indirectly and directly. It was found that PXT and PXT-Mg2+ complexes were photodegraded by H-abstraction, OH-addition and F-substitution. The main reaction of PXT indirect photolysis is OH-addition reaction, while the main reaction of PXT0-Mg2+ complex is H-abstraction. All the reaction pathways of H-abstraction, OH-addition and F-substitution are exothermic. PXT0 reacts more readily with ·OH or 1O2 in water than PXT+. However, the higher activation energy of PXT with 1O2 indicates that the 1O2 reaction plays a minor role in the photodegradation pathway. The direct photolysis process of PXT includes ether bond cleavage, defluorination, and dioxolane ring-opening reaction. In the PXT-Mg2+ complex, the direct photolysis process occurs via a dioxolane ring opening. Additionally, Mg2+ in water has a dual effect on the direct and indirect photolysis of PXT. In other words, Mg2+ can inhibit or promote their photolytic reactions. Overall, PXT in natural water mainly undergo direct and indirect photolysis reactions with ·OH. The main products include direct photodegradation products, hydroxyl addition products and F-substitution products. These findings provide critical information for predicting the environmental behavior and transformation of antidepressants. © 2023

关键词： Density functional theory

来源：评论

学校读者我要写书评

暂无评论

Volatile organic compounds concentration profiles and control strategy in container manufacturing industry:Case studies in China

引用

Journal of environmental Sciences 2021年第6期33卷 296-306页

作者： Yunting Ke Ruiyuan Liu Xiaofang Chen Yang Feng Ping Gao Haomin Huang Liya Fan Daiqi Ye School of Environment and Energy South China University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control(SCUT) Guangzhou 510006China National Engineering Laboratory for VOCs Pollution Control Technology and Equipment(SCUT) Guangzhou 510006China Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal(SCUT) Guangzhou 510006China

Volatile organic compounds(VOCs),important precursors of ozone(O_(3))and fine particulate matter(PM_(2.5)),are the key to curb the momentum of O_(3)growth and further reducing PM_(2.5)in *** manufacturing industry is one of the major VOC emitters,and more than 96%containers of the world are produced in China,with the annual usage of coatings of over 200,000 tons in recent *** is the first research on the emission characteristics of VOCs in Chinese container manufacturing industry,including concentration and ozone formation potential(OFP)of each *** result shows that the largest amounts of VOCs are emitted during the pretreatment process,followed by the paint mixing process and primer painting process,and finally other sprays *** average VOC concentrations in the workshops,the exhausts before treatment and the exhausts after treatment are ranging from 82.67–797.46,170–1,812.65,66.20–349.63 mg/m^(3),***,alcohols and ethers are main species,which contribute more than 90%OFP *** on the emission characteristics of VOCs and the technical feasibility,it is recommended to set the emission limit in standard of benzene to 1.0 mg/m^(3),toluene to 10 mg/m^(3),xylene to 20 mg/m^(3),benzenes to 40 mg/m^(3),alcohols and ethers to 50 mg/m^(3),and VOCs to 100 mg/m^(3).The study reports the industry emission characteristics and discusses the standard limits,which is a powerful support to promote VOCs emission reduction,and to promote the coordinated control of PM_(2.5)and O_(3)pollution.

关键词： Container manufacturing Volatile organic compounds(VOCs) Emission characteristics control strategy

来源：评论

学校读者我要写书评

暂无评论

VOC characteristics and their source apportionment in a coastal industrial area in the Yangtze River Delta, China

引用

Journal of environmental Sciences 2023年第5期127卷 483-494页

作者： Mengrong Yang Fengxia Li Cenyan Huang Lei Tong Xiaorong Dai Hang Xiao Center for Excellence in Regional Atmospheric Environment&Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo(Beilun)Zhongke Haixi Industrial Technology Innovation CenterNingbo 315800China University of Chinese Academy of Sciences Beijing 100049China Department of Neuro-and Sensory Physiology University Medical Center GotingenHumboldtallee 2337073 GotingenGermany Center for Biostructural Imaging of Neurodegeneration University Medical Center Gotingenvon-Siebold-Straβ3α37075GotingenGermany College of Biological and Environmental Sciences Zhejiang Wanli UniversityNingbo 315100China

Volatile organic compounds(VOCs)are important precursors of secondary organic compounds and ozone,which raise major environmental *** investigate the VOC emission characteristics,measurements of VOCs based on proton transfer reaction-mass spectrometry during 2017 were conducted in a coastal industrial area in Ningbo,Zhejiang Province,*** on seasonal variation in species concentration,the positive matrix factorization(PMF)receptor model was applied to apportion the sources of VOCs in each *** PMF results revealed that unknown acetonitrile source,paint solvent,electronics industry,biomass burning,secondary formation and biogenic emission were mainly attributed to VOC *** burning and secondary formation were the major sources of VOCs and contributed more than 70%of VOC emissions in spring and ***-related sources contributed 8.65%–31.2%of the VOCs throughout the *** unknown acetonitrile source occurred in winter and spring,and contributed 7.6%–43.73%of the VOC emissions in the two *** probability function(CPF)analysis illustrated that the industry sources came from local emission,while biomass burning and biogenic emission mainly came from the northwest *** potential source contribution function(PSCF)model showed that secondary formation-related source was mainly from Jiangsu Province,northeastern China and the surrounding *** potential source areas of unknown acetonitrile source were northern Zhejiang Province,southern Jiangsu Province and the northeastern coastal marine environments.

关键词： Volatile organic compounds Proton transfer reaction-mass spectrometry PMF source apportionment Seasonal characteristics

来源：评论

学校读者我要写书评

暂无评论

Aqueous production of sulfur-containing aerosols from nitroaromatic compounds and SO2 in wintertime urban haze

引用

Science Bulletin 2025年第11期70卷 1846-1855页

作者： Yang, Ning Wang, Junfeng Jacob, Daniel J. Ye, Jianhuai Sheng, Ming Niu, Mutong Qin, Yiming Ge, Xinlei Sun, Yele Wang, Zifa Wang, Yuhang Wu, Fengchang Liu, Cong-Qiang George, Christian Fu, Pingqing Institute of Surface-Earth System Science School of Earth System Science Tianjin University Tianjin300072 China School of Emergency Management Nanjing University of Information Science and Technology Nanjing210044 China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science and Technology Nanjing210044 China John A. Paulson School of Engineering and Applied Sciences Harvard University CambridgeMA02138 United States School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China School of Energy and Environment City University of Hong Kong Hong Kong999077 China LAPC Institute of Atmospheric Physics Chinese Academy of Sciences Beijing100029 China School of Earth and Atmospheric Sciences Georgia Institute of Technology AtlantaGA02115 United States State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China Université Claude Bernard Lyon 1 CNRS IRCELYON VilleurbanneF-69626 France

Nighttime aqueous oxidation of fossil fuel emissions is a significant source of atmospheric secondary organic aerosols. However, the underlying mechanism of the aqueous processing remains unclear. Utilizing ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry of water-soluble organic carbon samples, we present field observations that reveal the aqueous-phase conversion of nitroaromatic compounds (NACs) and sulfur-containing aerosols from fossil fuel combustion at high relative humidity during a severe haze event in Beijing in the winter of 2016. We have confirmed that the ring-breaking oxidation of NACs can generate nitrous acid in the aqueous phase, which rapidly oxidizes sulfur dioxide (SO2) to sulfate. Subsequently, reactions between sulfate and unsaturated compounds contribute to the formation of aliphatic organosulfates. Our results elucidate a molecular-level understanding of the aqueous production of sulfur-containing aerosols from NACs and SO2 in wintertime urban haze. © 2025 Science China Press

关键词： Sulfur dioxide

来源：评论

学校读者我要写书评

暂无评论

Spatiotemporal pattern of ENSO-induced modulation on landscape fires over Pacific Rim from 2001 to 2020

引用

Advances in Climate Change Research 2024年第6期15卷 1057-1066页

作者： Fang-Zhou LI Ning-Ran LI Martin J.WOOSTER Wen-Shi LIN Tao XUE Tong ZHU State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Environmental Protection Key Laboratory of Atmospheric Exposure and Health Risk Management and Center for Environment and HealthPeking UniversityBeijing 100871China School of Science Swinburne University of TechnologyMelbourne VIC 3122Australia Leverhulme Centre for Wildfires Environment&SocietyDepartment of GeographyKing's College LondonLondon WC2R 2LSUK NERC National Centre for Earth Observation Department of GeographyKing's College LondonLondon WC2R 2LSUK School of Atmospheric Sciences Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519000China Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat-sen UniversityZhuhai 519000China Institute of Reproductive and Child Health National Health Commission Key Laboratory of Reproductive Health/Department of Epidemiology and BiostatisticsMinistry of Education Key Laboratory of Epidemiology of Major Diseases(PKU)School of Public HealthPeking University Health Science CentreBeijing 100191China Research Station of Alpine Ecology Environment and Health Tibet UniversityLhasa 850000China

While El Niño-Southern Oscillation(ENSO)modulates landscape fire activities across the Pacific Rim,the detailed patterns and mode-specific variations of these effects remain poorly *** study aims to address that gap by systematically assessing the spatiotemporal variations in burned areas from 2001 to 2020 during different modes of ENSO,namely,Eastern Pacific(EP)El Niño,EP La Niña,Central Pacific(CP)El Niño and CP La Niñ*** evaluate the modulation patterns using classical correlation and cross-spectrum analyses,focusing on five hotspot regions:Temperate North America(TENA),Southern Hemisphere South America(SHSA),Northern Hemisphere South America(NHSA),Equatorial Asia(EQAS)and Australia and New Zealand(AUST).El Niño and La Niña exhibit asymmetrical opposite effects on burned areas,as *** findings reveal spatial non-uniformity in the impact of ENSO on landscape fires,with La Niña enhancing burned areas in TENA and SHSA,whereas El Niño predominantly affects AUST,EQAS and *** and EP ENSO events differ in intensity and their large-scale circulation *** differences cause notable variations in the regional burned *** vapour redistribution emerges as the key *** study emphasises the heterogeneity in ENSO modes in regulating landscape fires,providing insights for future landscape fire risk assessment and prevention efforts under climate change.

关键词： ENSO mode Landscape fire Burned area Pacific Rim

来源：评论

学校读者我要写书评

暂无评论

Effect of C/N Ratio on Nitrogen Removal of A/O-MBBR Process for Treating Mariculture Wastewater

引用

Journal of Ocean University of China 2021年第4期20卷 879-885页

作者： CHEN Xi XIANG Zhuangzhuang HUANG Xiao RONG Huimin BAI Jie ZHAO Yangguo College of Marine Life Science Ocean University of ChinaQingdao 266003China College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Nanjing University of Information Science and Technology Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing 210044China Key Laboratory of Marine Environment and Ecology(Ocean University of China)Ministry of Education Qingdao 266100China

In order to explore the effect of carbon and nitrogen(C/N)ratio on the performance of anoxic/aerobic-moving bed bio-film reactor(A/O-MBBR)process for treating mariculture wastewater,a laboratory-scale A/O-MBBR was *** results showed that the reduction of C/N ratio was conducive to improving the removal efficiency of chemical oxygen demand(COD)and ammonia nitrogen(NH_(4)^(+)-N),while inhibiting that of nitrite nitrogen(NO_(2)^(−)-N)and nitrate nitrogen(NO_(3)^(−)-N).The extracellular polymeric substances(EPS)in anoxic zone were significantly higher in concentration than that in aerobic zone although they both declined with decrease of C/N *** result provides solid support for better controlling the pollution of mariculture wastewater.

关键词： mariculture wastewater C/N ratio A/O-MBBR process EPS

来源：评论

学校读者我要写书评

暂无评论

Accumulation Kinetics of Polystyrene Nano- and Microplastics in the Waterflea Daphnia Magnaand Trophic Transfer to the Mysid Limnomysis Benedeni

SSRN

引用

SSRN 2024年

作者： Yu, Qi Nederstigt, Tom A.P. Wang, Zhuang Wu, Juan Bosker, Thijs Peijnenburg, Willie J.G.M. Vijver, Martina G. State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental Science Ministry of Ecology and Environment Guangzhou510535 China Leiden University Leiden2300 RA Netherlands School of Environmental Science and Engineering Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science and Technology Nanjing210044 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of Technology Hangzhou310014 China Bilthoven3720 BA Netherlands

Trophic transfer of nano- and microplastics (NMPs) within food webs is poorly understood. Here we investigated the accumulation of differently sized polystyrene particles (PSPs) in Daphnia magna and their subsequent transfer to Limnomysis benedeni, explicitly accounting for the fate of the PSPs in the aquatic system as a function of particle size (26, 500 and 4800 nm). L. benedeni were fed D. magna exposed to 8 mg/L PSPs for 16 h and were subsequently depurated for 48 h in the absence of food. On the basis of the mass of particles accumulated in the organisms, the internal concentration of 4800 nm PSPs was found to be 4 -10 times higher than that of 26 and 500 nm PSPs in D. magna. Uptake rate constants in daphnids for 26 nm (1.7 ± 0.4 L/g·h) and 4800 nm (1.7 ± 0.4 L/g·h) were significantly (p © 2024, The Authors. All rights reserved.

关键词： Rate constants

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：