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Acta Geochimica 2021年第1期40卷 42-50页

作者： Yi Liu che-jen lin Wei Yuan Zhiyun Lu Xinbin Feng State Key Laboratory of Environmental Geochemistry Institute of Geochemistry.Chinese Academy of SciencesGuiyangChina University of Chinese Academy of Sciences BeijingChina Center for Advances in Water and Air Quality Lamar UniversityBeaumontTXUSA College of Environment and Energy South China University of TechnologyGuangzhouChina National Forest Ecosystem Research Station AilaoshanYunnanChina

To understand its source,distribution,storage,and translocation in the subtropical forest ecosystems,mercury(Hg)concentrations and stable isotopes in forest biomass tissues(foliage,branch,bark,and trunk)were investigated at Ailao Mountain National Nature Reserve,Southwest *** total Hg(THg)concentrations in the samples show the following trend:mature foliage(57±19 ng g-1)>bark(11±4.0 ng g-1)>branch(5.4±2.5 ng g-1)>trunk(1.6±0.7 ng g-1).Using the measured THg concentrations and the quantity of respective biomasses,the Hg pools in the forest are:wood(60±26μg m-2)>bark(51±18μg m-2)>foliage(41±11μg m-2)>branch(26±8.3μg m-2).The tree biomasses displayed negativeδ202Hg(-1.83‰to-3.84‰)andΔ199Hg(-0.18‰to-0.62‰).The observedΔ200Hg(-0.08‰to 0.04‰)is not significantly from zero.AΔ199Hg/Δ201Hg ratio of 1.05 was found in tree biomasses,suggesting that mercury has undergone Hg(Ⅱ)photoreduction processes.A Hg-isotope based binary mixing model suggests that Hg in the tree biomasses mainly originated from foliage uptake of atmospheric Hg0,constituting 67%,80%,and 77%of Hg in wood,branch,and bark,*** study sheds new light on the transportation and sources of Hg in the subtropical forest ecosystems.

关键词： Hg Subtropical forest ecosystem Hg stable isotope Hg-isotope based binary mixing model

Comparison of in vitro digestion methods for determining bioaccessibility of Hg in rice of China

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Journal of Environmental Sciences 2018年第6期30卷 185-193页

作者： Ze Wu Xinbin Feng Ping Li che-jen lin Guangle Qiu Xun Wang Huifang Zhao Hui Dong State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550081 China University of Chinese Academy of Sciences Beijing 100049 China Center for Advances in Water and Air Quality Lamar University Beaumont TX USA

Rice consumption can be a major pathway for mercury（Hg） exposure, which can cause health hazards to Chinese residents. To accurately assess the potential health risks, the bioaccessibility of Hg in rice samples collected at background and Hg-contamination sites was examined using four in vitro methods. The results showed that 〈 50% of the total mercury（THg） was bioaccessible in the studied rice samples. The THg bioaccessibility in the rice samples collected at the Hg-contaminated site was higher than that observed at the background area. The bioaccessibility of arsenic（As） and cadmium（Cd） was also evaluated for comparison of the four in vitro methods used in this study. The Physiologically Based Extraction Test was found to be the most accurate method based on the consistency of the results compared to those reported in previous studies. The estimated daily intakes of THg via rice consumption using the bioaccessibility data were found to meet the recommendation value set by the JECFA and the WHO in both sites. However, the potential health risk was not negligible at the Hg-contaminated sites, due to the high THg concentration and bioaccessibility in the rice samples.

关键词： Mercury Bioaccessibility Rice Health-risks

Evaluation of health benefit using Ben MAP-CE with an integrated scheme of model and monitor data during Guangzhou Asian Games

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Journal of Environmental Sciences 2016年第4期28卷 9-18页

作者： Dian Ding Yun Zhu Carey Jang che-jen lin Shuxiao Wang Joshua Fu Jian Gao Shuang Deng Junping Xie Xuezhen Qiu Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environmental and Energy South China University of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China. State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084 China USEPA/Office of Air Quality Planning & Standards RTP NC27711 USA Department of Civil Engineering Lamar University Beaumont TX 77710-0024 USA Department of Environmental Science and Engineering Tsinghua University Beijing 100084 China Department of Civil & Environmental Engineering University of Tennessee Knoxville TN 37996-2010 USA Chinese Research Academy of Environmental Sciences Beijing 100012 China

Guangzhou is the capital and largest city（land area：7287 km2）of Guangdong province in South *** air quality in Guangzhou typically worsens in November due to unfavorable meteorological conditions for pollutant *** the Guangzhou Asian Games in November 2010,the Guangzhou government carried out a number of emission control measures that significantly improved the air *** this paper,we estimated the acute health outcome changes related to the air quality improvement during the 2010 Guangzhou Asian Games using a next-generation,fully-integrated assessment system for air quality and health *** advanced system generates air quality data by fusing model and monitoring data instead of using monitoring data alone,which provides more reliable *** air quality estimates retain the spatial distribution of model results while calibrating the value with *** results show that the mean PM2.5concentration in November 2010 decreased by 3.5μg/m^3 compared to that in 2009 due to the emission control *** the analysis,we estimate that the air quality improvement avoided 106 premature deaths,1869 cases of hospital admission,and 20,026 cases of outpatient *** overall cost benefit of the improved air quality is estimated to be 165 million CNY,with the avoided premature death contributing 90%of this *** research demonstrates that Ben MAP-CE is capable of assessing the health and cost benefits of air pollution control for sound policy making.

关键词： Air quality Health benefit PM2.5 Ben MAP-CE Data fusion Model and monitor data

Source attribution for mercury deposition with an updated atmospheric mercury emission inventory in the Pearl River Delta Region, China

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Frontiers of Environmental Science & Engineering 2019年第1期13卷 39-52页

作者： Jiajun Liu Long Wang Yun Zhu che-jen lin Carey Jang Shuxiao Wang Jia Xing Bin Yu Hui Xu Yuzhou Pan Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and Energy South ChinaUniversity of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China Department of Civil and Environmental Engineering Lamar University Beaumont TX 77710 USA US EPA Office of Air Quality Planning & Standards Res Triangle Park NC 27711 USA State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment. Tsinghua University Beijing 100084 China Guangzhou Environmental Monitoring Centre Guangzhou 510030 China

We used CMAQ-Hg to simulate mercury pollution and identify main sources in the Pearl River Delta (PR.D) with updated local emission inventory and latest regional and global emissions. The total anthropogenic mercury emissions in the PRD for 2014 were 11,939.6 kg. Power plants and industrial boilers were dominant sectors, responsible for 29.4 and 22.7%. We first compared model predictions and observations and the results showed a good performance. Then five scenarios with power plants (PP), municipal solid waste incineration (MSWI), industrial point sources (IP), natural sources (NAT), and boundary conditions (BCs) zeroed out separately were simulated and compared with the base case. BCs was responsible for over 30% of annual average mercury concentration and total deposition while NAT contributed around 15%. Among the anthropogenic sources, IP (22.9%) was dominant with a contribution over 20.0% and PP (18.9%) and MSWI (11.2%) ranked second and third. Results also showed that power plants were the most important emission sources in the central PRD, where the ultra-low emission for thermal power units need to be strengthened. In the northern and western PRD, cement and metal productions were priorities for mercury control. The fast growth of municipal solid waste incineration were also a key factor in the core areas. In addition, a coordinated regional mercury emission control was important for effectively controlling pollution. In the future, mercury emissions will decrease as control measures are strengthened, more attention should be paid to mercury deposition around the large point sources as high levels of pollution are observed.

关键词： Emission inventory Mercury deposition Pearl River Delta (PRD) Source attribution Control strategy

Response surface modeling-based source contribution analysis and VOC emission control policy assessment in a typical ozone-polluted urban Shunde,China

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Journal of Environmental Sciences 2017年第1期29卷 294-304页

作者： Zhiqiang You Yun Zhu Carey Jang Shuxiao Wang Jian Gao che-jen lin Minhui Li Zhenghua Zhu Hao Wei Wenwei Yang Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and EnergySouth China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China USEPA/offilce of Air Quality Planning&Standards RTPNC 27711USA Chinese Research Academy of Environmental Sciences Beijing 100012China Department of Civil Engineering Lamar UniversityBeaumontTX 77710-0024USA Guangzhou Urban Environmental Cloud Information Technology R&D Co.Ltd Guangzhou 511400China

To develop a sound ozone（O_3） pollution control strategy,it is important to well understand and characterize the source contribution due to the complex chemical and physical formation processes of O_*** the ＂Shunde＂ city as a pilot summer case study,we apply an innovative response surface modeling（RSM） methodology based on the Community Multi-Scale Air Quality（CMAQ） modeling simulations to identify the O_3 regime and provide dynamic analysis of the precursor contributions to effectively assess the O_3 impacts of volatile organic compound（VOC） control *** results show that Shunde is a typical VOC-limited urban O_3 polluted *** ＂Jiangmen＂ city,as the main upper wind area during July 2014,its VOCs and nitrogen oxides（NO_x） emissions make up the largest contribution（9.06%）.On the contrary,the contribution from local（Shunde） emission is lowest（6.35%） among the seven neighbor *** local VOCs industrial source emission has the largest contribution comparing to other precursor emission sectors in *** results of dynamic source contribution analysis further show that the local NO_x control could slightly increase the ground O_3 under low（10.00%） and medium（40.00%）reduction ratios,while it could start to turn positive to decrease ground O_3 under the high NO_x abatement ratio（75.00%）.The real-time assessment of O_3 impacts from VOCs control strategies in Pearl River Delta（PRD） shows that the joint regional VOCs emission control policy will effectively reduce the ground O_3 concentration in Shunde.

关键词： O_3 Response surface model Source contribution analysis VOCs control policy

A case study of development and application of a streamlined control and response modeling system for PM_(2.5)attainment assessment in China

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Journal of Environmental Sciences 2016年第3期28卷 69-80页

作者： Shicheng Long Yun Zhu Carey Jang che-jen lin Shuxiao Wang Bin Zhao Jian Gao Shuang Deng Junping Xie Xuezhen Qiu School of Environment and Energy South China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China USEPA/Office of Air Quality Planning&Standards RTPNC 27711USA Department of Civil Engineering Lamar UniversityBeaumontTX 77710-0024USA State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Chinese Research Academy of Environmental Sciences Beijing 100012China

This article describes the development and application of a streamlined air control and response modeling system with a novel response surface modeling-linear coupled fitting method and a new module to provide streamlined model data for PM_（2.5） attainment assessment in *** method is capable of significantly reducing the dimensions required to establish a response surface model,as well as capturing more realistic response of PM_（2.5） to emission changes with a limited number of model *** newly developed module establishes a data link between the system and the Software for Model Attainment Test—Community Edition（SMAT-CE）,and has the ability to rapidly provide model responses to emission control scenarios for SMAT-CE using a simple *** performance of this streamlined system is demonstrated through a case study of the Yangtze River Delta（YRD） in *** results show that this system is capable of reproducing the Community Multi-Scale Air Quality（CMAQ） model simulation results with maximum mean normalized error 〈 3.5%.It is also demonstrated that primary emissions make a major contribution to ambient levels of PM_（2.5） in January and August（e.g.,more than50%contributed by primary emissions in Shanghai）,and Shanghai needs to have regional emission control both locally and in its neighboring provinces to meet China＇s annual PM_（2.5）National Ambient Air Quality *** streamlined system provides a real-time control/response assessment to identify the contributions of major emission sources to ambient PM_（2.5）（and potentially O_3 as well） and streamline air quality data for SMAT-CE to perform attainment assessments.

关键词： Response surface model RSM-linear coupled fitting Air quality modeling Attainment assessment PM_(2.5)

Development and case study of a new-generation model-VAT for analyzing the boundary conditions influence on atmospheric mercury simulation

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Frontiers of Environmental Science & Engineering 2018年第1期12卷 149-158页

作者： Wenwei Yang Yun Zhu Carey Jang Shicheng Long che-jen lin Bin Yu Zachariah Adelman Shuxiao Wang Jia Xing Long Wang Jiabin Li Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and Energy South China University of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China USEPA/Office of Air Quality Planning ＆ Standards RTP NC 27711 USA Guangzhou Urban Environmental Cloud Information Technology R＆D Co. Ltd Guangzhou 510006 China 5 Department of Civil Engineering Lamar University Beaumont TX 77710-0024 USA 6 Guangzhou Environmental Monitoring Center Station Guangzhou 510030 China 7 Institute for the Environment The University of North Carolina at Chapel Hill Chapel Hill NC 27517 USA

Atmospheric models are essential tools to study the behavior of air pollutants. To interpret the complicated atmospheric model simulations, a new-generation Model Visualization and Analysis Tool （Model-VAT） has been developed for scientists to analyze the model data and visualize the simulation results. The Model-VAT incorporates analytic functions of conventional tools and enhanced capabilities in flexibly accessing, analyzing, and comparing simulated results from multi-scale models with diflbrent map projections and grid resolutions. The performance of the Model-VAT is demonstrated by a case study of investigating the influence of boundary conditions （BCs） on the ambient Hg formation and transport simulated by the CMAQ model over the Pearl River Delta （PRD） region. The alternative BC options are taken from （1） default time-independent profiles, （2） outputs from a CMAQ simulation of a larger nesting domain, and （3） concentration files from GEOS-chem （re-gridded and re-projected using the Model-VAT）. The three BC inputs and simulated ambient concentrations and deposition were compared using the Model-VAT. The results show that the model simulations based on the static BCs （default profile） underestimates the Hg concentrations by --6.5%, dry depositions by -9.4%, and wet depositions by --43.2% compared to those of the model-derived （e. g. GEOS-chem or nesting CMAQ） BCs. This study highlights the importance of model nesting approach and demonstrates that the innovative functions of Model-VAT enhances the efficiency of analyzing and comparing the model results from various atmospheric model simulations.

关键词： Model and data wsuahzatlonModel and data analysisCMAQBoundary conditionsMercury

Development of an integrated policy making tool for assessing air quality and human health benefits of air pollution control

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Frontiers of Environmental Science & Engineering 2015年第6期9卷 1056-1065页

作者： Xuezhen QIU Yun ZHU Carey JANG che-jen lin Shuxiao WANG Joshua FU Junping XIE Jiandong WANG Dian DING Shicheng LONG Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and Energy South China University of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China USEPA/Office of Air Quality Planning & Standards RTP NC 27711 USA Department of Civil Engineering Lamar University Beaumont TX 77710-0024 USA State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China Department of Civil & Environmental Engineering University of Tennessee Knoxville TN 37996-2010 USA

Efficient air quality management is critical to protect public health from the adverse impacts of air pollution. To evaluate the effectiveness of air pollution control strategies, the US Environmental Protection Agency （US EPA） has developed the Software for Model Attainment Test-Community Edition （SMAT-CE） to assess the air quality attainment of emission reductions, and the Environmental Benefits Mapping and Analysis Program- Community Edition （BenMAP-CE） to evaluate the health and economic benefits of air quality improvement respectively. Since scientific decision-making requires timely and coherent information, developing the linkage between SMAT-CE and BenMAP-CE into an integrated assessment platform is desirable. To address this need, a new module linking SMAT-CE to BenMAP-CE has been developed and tested. The new module streamlines the assessment of air quality and human health benefits for a proposed air pollution control strategy. It also implements an optimized data gridding algorithm which significantly enhances the computational efficiency without compro- mising accuracy. The performance of the integrated software package is demonstrated through a case study that evaluates the air quality and associated economic benefits of a national-level control strategy of PM2.5. The results of the case study show that the proposed emission reduction reduces the number of nonattainment sites from 379 to 25 based on the US National Ambient Air Quality Standards, leading to more than USS334billion ofeconomic benefits annually from improved public health. The integration of the science-based software tools in this study enhances the efficiency of developing effective and optimized emission control strategies for policy makers.

关键词： air quality assessment human health benefit,economic benefit air quality attainment assessment airpollution control strategy decision support system

Design and demonstration of a next-generation air quality attainment assessment system for PM_(2.5)and O_3

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Journal of Environmental Sciences 2015年第3期27卷 178-188页

作者： Hua Wang Yun Zhu Carey Jang che-jen lin Shuxiao Wang Joshua S.Fu Jian Gao Shuang Deng Junping Xie Dian Ding Xuezhen Qiu Shicheng Long Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environmental and Energy South China University of Technology Guangzhou Higher Education Mega Center State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex School of Environment Tsinghua University USEPA/Office of Air Quality Planning & Standards Department of Civil Engineering Lamar University Department of Civil & Environmental Engineering University of Tennessee Chinese Research Academy of Environmental Sciences

Due to the increasingly stringent standards, it is important to assess whether the proposed emission reduction will result in ambient concentrations that meet the standards. The Software for Model Attainment Test-Community Edition （SMAT-CE） is developed for demonstrating attainment of air quality standards of O3 and PM2.5. SMAT-CE improves computational efficiency and provides a number of advanced visualization and analytical functionalities on an integrated GIS platform. SMAT-CE incorporates historical measurements of air quality parameters and simulated air pollutant concentrations under a number of emission inventory scenarios to project the level of compliance to air quality standards in a targeted future year. An application case study of the software based on the U.S. National Ambient Air Quality Standards （NAAQS） shows that SMAT-CE is capable of demonstrating the air quality attainment of annual PM2.5 and 8-hour O3 for a proposed emission control policy.

关键词： Air quality standards Attainment test Air pollution GIS Emission control

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大气汞污染模拟研究进展及控制策略优化方法

环境科学 2011年第6期32卷 1851-1856页

作者：朱云王书肖 che-jen lin 郝吉明 Carey Jang 王龙清华大学环境科学与工程系北京100084 华南理工大学环境科学与工程学院广州510006 Department of Civil Engineering Lamar UniversityBeaumontTX 77710-0024USA USEPA/Office of Air Quality Planning&Standards RTPNC 27711USA

简评了国内外大气汞污染模拟相关研究情况,指出目前我国大气汞排放模拟及污染控制研究工作非常缺乏,严重影响了我国汞污染控制策略制定以及"汞环境外交纠纷"的积极应对;并据此建议应该对我国大气汞污染模拟及控制策略优化进行系统研究,... 详细信息

简评了国内外大气汞污染模拟相关研究情况,指出目前我国大气汞排放模拟及污染控制研究工作非常缺乏,严重影响了我国汞污染控制策略制定以及"汞环境外交纠纷"的积极应对;并据此建议应该对我国大气汞污染模拟及控制策略优化进行系统研究,其研究内容包括:汞排放清单的建立、大气汞的长程输送、响应面模型软件(response surface modeling-Hg,RSM-Hg)的研发、汞污染控制策略优化4个方面.阐述了基于"RSM-Hg"的"汞污染控制策略优化"研究方法及流程,并提出RSM-Hg的研发重点是可控源排放-汞污染水平响应表面模型(RSM)建模."中国大气汞污染模拟及控制策略优化"研究工作的开展,将有利于加深对汞科学及我国汞污染的现状和时空分布特征的理解,并将奠定多行业汞污染排放协同控制优化的科学基础.

关键词：汞污染大气汞模型响应面模型控制策略优化汞响应面模型软件