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Gas-to-particle conversion of atmospheric ammonia and sampling artifacts of ammonium in spring of Beijing

Science China Earth Sciences 2015年第2期58卷 345-355页

作者： WEI LianFang DUAN JingChun TAN JiHua MA YongLiang HE KeBin WANG ShuXiao HUANG XiaoFeng ZHANG YuanXun College of Resources and Environment University of the Chinese Academy of Sciences State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua University State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Key Laboratory for Urban Habitat Environmental Science and Technology School of Environment and EnergyPeking University Shenzhen Graduate School

PM2.5 and gaseous pollutants(SO2,HNO2,HNO3,HCl,and NH3) were simultaneously collected by Partisol- Model 2300 Sequential Speciation Sampler with denuder-filter pack system in the spring of 2013 in ***-soluble inorganic ions and gaseous pollutants were measured by Ion *** showed that the concentrations of NH3,NH+ 4and PM2.5 had similar diurnal variation trends and their concentrations were higher at night than in *** results of gas-to-particle conversion revealed that [NH3]:[NH+4] ratio was usually higher than 1; however,it was less than 1 and the concentration of NH+4 increased significantly during the haze episode,indicating that NH3 played an important role in the formation of fine *** on the sampling artifacts suggested that the volatilization loss of NH+4 was prevalent in the traditional single filter-based *** excess loss of HNO3 and HCl resulted from ammonium-poor aerosols and semivolatile inorganic species had severe losses in the clean day,whereas the mass of NH+ 4was usually overestimated during the single filter-based sampling due to the positive *** analysis was used to evaluate the influence of meteorological conditions on the volatilization loss of NH+*** was found that the average relative humidity and temperature had great effects on the loss of NH+*** loss of NH+4 was significantly under high temperature and low humidity,and tended to increase with the increasing of absorption of gaseous pollutants by *** total mass of volatile loss of NH+4,NO- 3and Cl- could not be ignored and its maximum value was 12.17 μg *** it is important to compensate sampling artifacts for semivolatile inorganic species.

关键词： ammonia gas-to-particle conversion PM2.5 ammonium sampling artifacts diurnal variation

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The path to carbon neutral shipping: a comparative analysis of low carbon technologies

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Journal of environmental Sciences 2025年

作者： Zhengang Zhou Zhicheng Wu Chang Liu Lingyu Shao You Zhang Weijie Liu Haitao Shen Dongwei Yao Haidong Fan Chenghang Zheng Xiang Gao State Key Lab of Clean Energy Utilization Institute of Carbon Neutrality State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control Zhejiang University Hangzhou 310027 China Zhejiang Energy Marine Environmental Technology Co. LTD. Hangzhou 311200 China Baima Lake Laboratory (Zhejiang Provincial Laboratory of Energy and Carbon Neutrality) Hangzhou 310051 China

Ship operations are crucial to global trade, and their decarbonization is essential to mitigate climate change. This study evaluates the economic viability of existing and emerging decarbonization technologies in maritime shipping using the levelized cost of energy methodology. It includes a detailed comparative analysis based on essential criteria and sensitivity assessments to highlight the economic impacts of technological advancements. key factors influencing total costs include fuel costs, carbon pricing, and energy demands for carbon capture. The findings reveal that methanol is more cost-effective than heavy fuel oil (HFO) when priced below 3000 CNY/t, assuming HFO costs 4400 CNY/t. Additionally, methanol with post-combustion carbon capture is less expensive than pre-combustion carbon capture. When carbon prices rise above 480 CNY/t, carbon capture technologies prove more economical than purchasing carbon emission allowances for HFO and liquefied natural gas. Enhancing the use of exhaust gas waste heat is recommended for cost savings. Post-combustion carbon capture also shows greater efficiency, requiring about 1.1 GJ/t less energy than pre-combustion methods, leading to lower overall costs. Future research should focus on market mechanisms to stabilize fuel prices and develop less energy-intensive carbon capture technologies. This study offers critical insights into effective decarbonization strategies for advancing global maritime trade in the present and future.

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Ambient volatile organic compounds at a receptor site in the Pearl River Delta region:Variations,source apportionment and effects on ozone formation

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Journal of environmental Sciences 2022年第1期34卷 104-117页

作者： Yao Meng Junwei Song Lewei Zeng Yingyi Zhang Yan Zhao Xufei Liu Hai Guo Liuju Zhong Yubo Ou Yan Zhou Tao Zhang Dingli Yue Senchao Lai The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Educationand Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Institute of Meteorology and Climate Research Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 1Eggenstein-Leopoldshafen 76344Germany Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina Guangdong Environmental Monitoring Center State Environmental Protection Key Laboratory of Regional Air Quality MonitoringGuangzhou 510308China Guangdong Polytechnic of Environmental Protection Engineering Foshan 528216China

We present the continuously measurements of volatile organic compounds(VOCs)at a receptor site(Wan Qing Sha,WQS)in the Pearl River Delta(PRD)region from September to November of *** average mixing ratios of total VOCs(TVOCs)was 36.3±27.9 ppbv with the dominant contribution from alkanes(55.5%),followed by aromatics(33.3%).The diurnal variation of TVOCs showed a strong photochemical consumption during daytime,resulting in the formation of ozone(O_(3)).Five VOC sources were resolved by the positive matrix factorization(PMF)model,including solvent usage(28.6%),liquid petroleum gas(LPG)usage(24.4%),vehicle exhaust(21.0%),industrial emissions(13.2%)and gasoline evaporation(12.9%).The regional transport air masses from the upwind cities of south China can result in the elevated concentrations of *** ratios of TVOCs/NO_(x)(1.53±0.88)suggested that the O_(3) formation regime at WQS site was VOC-limited,which also confirmed by a photochemical box model with the master chemical mechanism(PBM-MCM).Furthermore,the observation on high-O_(3) episode days revealed that frequent O_(3) outbreaks at WQS were mainly caused by the regional transport of anthropogenic VOCs especially for aromatics and the subsequent photochemical *** study provides valuable information for policymakers to propose the effective control strategies on photochemical pollution in a regional perspective.

关键词： Volatile organic compounds(VOCs) Pearl River Delta(PRD)region source apportionment Ozone(O_(3)) Regional transport

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Vertical Profiles of Volatile Organic Compounds in Suburban Shanghai

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Advances in Atmospheric Sciences 2021年第7期38卷 1177-1187页

作者： Yuhan LIU Hongli WANG Shengao JING Ming ZHOU Shenrong LOU Kun QU Wanyi QIU Qian WANG Shule LI Yaqin GAO Yusi LIU Xiaobing LI Zhong-Ren PENG Junhui CHEN Keding LU State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry of China Meteorology Administration Chinese Academy of Meteorological SciencesBeijing 100081China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality Institute for Environmental and Climate ResearchJinan UniversityGuangzhou 510632China International Center for Adaptation Planning and Design College of DesignConstruction and PlanningUniversity of FloridaGainesville 32611FLUSA Sichuan Academy of Environmental Science Sichuan 610041China

As Volatile Organic Compounds(VOCs)are one of the precursors of ozone,their distribution and variable concentrations are highly related to local ozone pollution *** this study,we obtained vertical profiles of VOCs in Shanghai’s Jinshan district on 8 September and 9 September in 2016 to investigate their distribution and impact on local atmospheric oxidation in the near surface *** samples were collected from heights between 50 m and 400 m by summa canisters using an unmanned aerial vehicle(UAV).Concentrations of VOCs(VOCs refers to the 52 species measured in this study)varied minimally below 200 m,and decreased by 21.2%from 100 m to 400 *** concentrations of VOCs above 200 m decreased significantly in comparison to those below 200 *** proportions of alkanes and aromatics increased from 55.2%and 30.5%to 57.3%and 33.0%,***,the proportion of alkenes decreased from 13.2%to 8.4%.Toluene and m/p-xylene were the key species in the formation of SOA and *** component analysis(PCA)revealed that the VOCs measured in this study mainly originated from industrial emissions.

关键词： VOCs vertical profiles secondary organic aerosol PCA Ozone

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Machine learning and theoretical analysis release the non-linear relationship among ozone,secondary organic aerosol and volatile organic compounds

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Journal of environmental Sciences 2022年第4期34卷 75-84页

作者： Feng Wang Zhongcheng Zhang Gen Wang Zhenyu Wang Mei Li Weiqing Liang Jie Gao Wei Wang Da Chen Yinchang Feng Guoliang Shi State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission ResearchCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research(CLAER) College of Environmental Science and EngineeringNankai UniversityTianjin 300350China State Key Laboratory on Odor Pollution Control Tianjin Academy of Environmental SciencesTianjin 300191China Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution Jinan University Institute of Mass Spectrometry and Atmospheric EnvironmentGuangzhou 510632China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality Guangzhou 510632China Trusted AI System Laboratory College of Computer ScienceNankai UniversityTianjin 300350China Key Laboratory of Civil Aviation Thermal Hazards Prevention and Emergency Response Civil Aviation University of ChinaTianjin 300300China

Fine particulate matter(PM_(2.5))and ozone(O_(3))pollutions are prevalent air quality issues in *** organic compounds(VOCs)have significant impact on the formation of O_(3)and secondary organic aerosols(SOA)contributing PM_(2.5).Herein,we investigated 54 VOCs,O_(3)and SOA in Tianjin from June 2017 to May 2019 to explore the non-linear relationship among O_(3),SOA and *** monthly patterns of VOCs and SOA concentrations were characterized by peak values during October to March and reached a minimum from April to September,but the observed O_(3)was exactly the *** learning methods resolved the importance of individual VOCs on O_(3)and SOA that alkenes(mainly ethylene,propylene,and isoprene)have the highest importance to O_(3)formation;alkanes(C_(n),n≥6)and aromatics were the main source of SOA *** learning methods revealed and emphasized the importance of photochemical consumptions of VOCs to O_(3)and SOA *** formation potential(OFP)and secondary organic aerosol formation potential(SOAFP)calculated by consumed VOCs quantitatively indicated that more than 80%of the consumed VOCs were alkenes which dominated the O_(3)formation,and the importance of consumed aromatics and alkenes to SOAFP were 40.84%and 56.65%,***,isoprene contributed the most to OFP at 41.45%regardless of the season,while aromatics(58.27%)contributed the most to SOAFP in ***,our findings can provide scientific evidence on policymaking for VOCs controls on seasonal scales to achieve effective reduction in both SOA and O_(3).

关键词： VOCs Machine learning Photochemical consumption Ozone formation potential Secondary organic aerosol formation potential

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Quantifying China's iron and steel industry's CO_(2) emissions and environmental health burdens:A pathway to sustainable transformation

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environmental Science and Ecotechnology 2024年第4期20卷 189-197页

作者： Weiling Wu Qian Tang Wenbo Xue Xurong Shi Dadi Zhao Zeyuan Liu Xin Liu Chunlai Jiang Gang Yan Jinnan Wang State Environmental Protection Key Laboratory of Environmental Pollution and Greenhouse Gases Co-control Chinese Academy of Environmental PlanningBeijing100041China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100041China State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy of Environmental PlanningBeijing100041China College of Environmental&Resource Sciences Zhejiang UniversityHangzhou310058China

Assessing the iron and steel industry's(ISI)impact on climate change and environmental health is vital,particularly in China,where this sector significantly influences air quality and CO_(2)*** is a lack of comprehensive analyses that consider the environmental and health burdens of manufacturing processes for ISI ***,we present an integrated emission inventory that encompasses air pollutants and CO_(2)emissions from 811 ISI enterprises and five key manufacturing processes in *** analysis shows that sintering is the primary source of air pollution in the *** contributes 71%of SO_(2),73%of NO_(x),and 54%of PM_(2.5)*** the other hand,81%of total CO_(2)emissions come from blast ***,the contributions of ISI have resulted in an increase of 3.6 mg m^(-3)in national population-weighted PM_(2.5)concentration,causing approximately 59,035 premature deaths in *** from Hebei,Jiangsu,Shandong,Shanxi,and Inner Mongolia provinces contributed to 48%of PM_(2.5)-related deaths in ***,the transportation of air pollutants across provincial borders highlights a concerning trend of environmental health *** on the research findings,it is crucial for ISI manufacturers to prioritize the removal of outdated production capacities and adopt energy-efficient and advanced techniques,along with ultra-low emission *** is particularly important for those manufacturers with substantial environmental *** transformative actions are essential in mitigating the environmental and health impacts in the affected regions.

关键词： Iron and steel industry CO_(2)emissions air pollutants emissions environmental health

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Risk assessment and identification of factors influencing the historical concentrations of microcystin in Lake Taihu, China

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Journal of environmental Sciences 2023年第5期127卷 1-14页

作者： Chen Cheng Alan D.Steinman Kaiye Zhang Qi Lin Qingju Xue Xing Wang Liqiang Xie State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Annis Water Resources Institute Grand Valley State University740 West Shoreline DriveMuskegonMIUSA National Engineering Laboratory for Lake Pollution Control and Ecological Restoration Chinese Research Academy of Environmental SciencesBeijing 100012China State Environmental Protection Key Laboratory of Drinking Water Source Protection Chinese Research Academy of Environmental SciencesBeijing 100012China

Understanding the history of microcystins(MCs)pollution in large lakes can help inform future lake *** collected sediment cores from Lake Taihu to:investigate the long-term record of MCs(MC-LR,MC-YR,and MC-RR),explore the main environmental drivers of MCs,and assess their public health and ecological *** showed that MCs content in all cores increased over *** core from north Taihu had the highest MC concentrations,with an average total MCs(sum of MC-LR,MC-YR,and MC-RR=TMCs)content of(74.31±328.55)ng/*** core from eastern Taihu showed the lowest average TMCs content of(2.91±3.95)ng/*** showed that sediment MCs at the three sites were positively correlated with sediment ***-LR and MC-YR in northern and western Taihu negatively correlated with both the sediment total organic carbon/sediment total nitrogen ratio(STOC/STN)andwater nitrate(NO_(3)^(−)-N)concentration,but three MC congeners at eastern Taihu showed positive correlations with water orthophosphate(PO_(4)^(3−)-P),NO_(3)^(−)-N,and STOC/*** additive model analysis at each site revealed that NO_(3)^(−)-N was the main TMCs driver in northern andwestern Taihuwhere phytoplankton dominated,whereasPO_(4)^(3−)-P was the main TMCs driver in eastern Taihu where macrophytes *** the whole lake scale,total phosphorus(TP)andPO_(4)^(3−)-P were the most important environmental drivers influencing MCs;TP explained 47.4%,44.2%,and 47.6%while orthophosphate explained 34.8%,31.2%,and 34.7%of the deviance on TMCs,MC-LR,and MC-YR,***_(3)^(−)-N also showed a strong effect on MCs variation,especially on *** assess-ment showed that both ecological and public health risk has increased in recent *** conclude that while control of phosphorus and nitrogen input should be a major focus for future lake management,lake zone-specificmanagement strategiesmay also be important.

关键词： Microcystins pollution history Orthophosphate Nitrate Risk assessment Lake Taihu

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Chemical characterization and source apportionment of PM_(1) and PM_(2.5) in Tianjin, China: Impacts of biomass burning and primary biogenic sources

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Journal of environmental Sciences 2021年第1期33卷 196-209页

作者： Jahan Zeb Khan Long Sun Yingze Tian Guoliang Shi Yinchang Feng Center for Ecological Research&Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education College of ForestryNortheast Forestry UniversityHarbin150040China State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control College of Enuironmental Science and EngineeringNankai UniversityTianjin300350China

The submicron particulate matter(PM_(1))and fine particulate matter(PM_(2.5))are very important due to their greater adverse impacts on the natural environment and human *** this study,the daily PM_(1) and PM_(2.5) samples were collected during early summer 2018 at a sub-urban site in the urban-industrial port city of Tianjin,*** collected samples were analyzed for the carbonaceous fractions,inorganic ions,elemental species,and specific marker sugar *** chemical characterization of PM_(1) and PM_(2.5) was based on their concentrations,compositions,and characteristic ratios(PM_(1)/PM_(2.5),AE/CE,NO3^-/SO4^2-,OC/EC,SOC/OC,OM/TCA,K^+/EC,levoglucosan/K^+,V/Cu,and V/Ni).The average concentrations of PM_(1) and PM_(2.5) were 32.4μg/m and 53.3μg/m^3,and PM_(1) constituted 63%of PM_(2.5) on *** source apportionment of PM_(1) and PM_(2.5) by positive matrix factorization(PMF)model indicated the main sources of secondary aerosols(25%and 34%),biomass burning(17%and 20%),traffic emission(20%and 14%),and coal combustion(17%and 14%).The biomass burning factor involved agricultural fertilization and waste *** biomass burning and primary biogenic contributions were determined by specific marker sugar *** anthropogenic sources(combustion,secondary particle formation,etc)contributed significantly to PM_(1) and PM_(2.5),and the natural sources were more evident in PM_(2.5).This work significantly contributes to the chemical characterization and source apportionment of PM_(1) and PM_(2.5) in near-port cities influenced by the diverse sources.

关键词： PM_(1) and PM_(2.5) Near-port city Chemical characterization source apportionment Biomass burning Primary biogenic

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Influence of Exposure Pathways on Tissue Distribution and Health Impact of Polycyclic Aromatic Hydrocarbon Derivatives

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Environment & Health 2023年第3期1卷 150-167页

作者： Yu Zhang Qian Hu Jiaqi Fu Xinting Li Hongjun Mao Ting Wang Tianjin Key Laboratory of Urban Transport Emission Research State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and ControlCollege of Environmental Science and EngineeringNankai UniversityTianjin 300071China

The oxygen(OPAHs),nitro(NPAHs),hydroxyl(OH-PAHs),and alkylated(APAHs)derivatives of polycyclic aromatic hydrocarbon(PAHs)are ubiquitous pollutants in the *** concentrations of NPAHs,OPAHs,OH-PAHs,and APAHs are lower than that of PAHs in the environment,but the carcinogenic abilities of the derivatives are usually 10 to 1,000-fold higher than that of parent *** are three main pathways for the exposure of polycyclic aromatic compounds to humans,including inhalation,direct contact,and *** exposure by inhalation,they are mainly distributed in the lungs,affecting lung function and causing inflammation,asthma,*** to the digestive system’s strong capacity for metabolism,intake of PAHs and the derivatives is primarily distributed in the digestive system and metabolized *** it may lead to dysplasia of these organs and even to *** skin is the primary site of direct contact with PAH *** derivatives can enter the bloodstream through all three contact pathways,thereby accumulating in various *** study aimed to summarize the influence of exposure pathways on tissue distribution and the health impact of PAH derivatives to provide references for future research and evaluation on public health.

关键词： PAH derivatives concentration tissue distribution exposure pathway health impact

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Springs Emerging along the Elevation Gradient Indicate Intensive Groundwater-Surface Water Exchange in an Alpine Headwater Catchment, Northwestern China

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Journal of Earth Science 2023年第1期34卷 181-193页

作者： Yalu Hu Ziyong Sun Rui Ma School of Environmental Studies China University of GeosciencesWuhan430078China Laboratory of Basin Hydrology and Wetland Eco-Restoration China University of GeosciencesWuhan430078China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Ministry of Ecology and EnvironmentWuhan430078China Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science China University of GeosciencesWuhan430078China

Groundwater plays an important role in sustaining the streamflow in cold alpine area, but is poorly understood due to a lack of direct access. About 98 groups of springs are observed at the upper reaches of Heihe River Basin, which provide an opportunity to explore the main aquifers. Springs are clustered in three groups according to locations:(1) springs on the moraine and talus deposits;(2) springs at the end of alluvial plain in lower topography;(3) springs along the river bank. The hydrometric, geochemical and isotopic data of springs in a representative catchment were integrated and used to elucidate the groundwater flow paths. Results indicate the Quaternary porous aquifers in the alpine catchment have a profound influence on the regional groundwater flow paths and the groundwater and surface water(GW-SW) interactions. The aquifer consisting of alluvial-pluvial deposits has a great capacity of groundwater storage and plays a vital role in regulating discharge by attenuating the seasonal variation and maintaining the main stream in cold seasons. This is different from the fast recharge and discharge mode of the moraine and talus deposits. Our work highlights the importance of loose deposits in controlling the GW-SW interactions in the cold alpine area.

关键词： springs alpine catchments groundwater groundwater-surface water interactions alluvial plain

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