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A New Coumarin-Based Fluorescent pH Probe

Journal of Donghua University(English Edition) 2015年第5期32卷 787-791页

作者：李洪启方宁张学斌杨一航周志鹏宋燕西丛培红 College of Chemistry Chemical Engineering & BiotechnologyDonghua University School of Environmental Science and Engineering State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile IndustryDonghua University State Key Laboratory of Molecular Engineering of Polymers Fudan University

A new iminocoumarin-derived colorimetric and fluorescent pH probe was developed for rapid and sensitive detection of pH changes in biological and environmental media. With the decrease of pH value( from 6. 24 to 3. 00),an obvious color change of the probe in ethanol-water solution from green to yellow was observed under nature light. The intensity of the maximum fluorescence emission peak of the probe decreased gradually with the acidity increase of the solution. While the fluorescence intensity of the emission peak of the probe did not exhibit distinct change when pH was less than 11. 00 and the fluorescence was almost quenched at pH 13. 50. Sensitivity of the fluorescent pH probe was not interfered by the presence of common metal cations and anions.

关键词： pH probe fluorescence colorimetric iminocoumarin

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Absorption enhancement of black carbon particles in the Pearl River Delta region

Absorption enhancement of black carbon particles in the Pear...

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第22届中国大气环境科学与技术大会暨中国环境科学学会大气环境分会2016年学术年会

作者： Xinhui Bi Guohua Zhang Long Peng Qinhao Lin Xinming Wang Mei Li Duohong Chen Ning Qiu Ping'an Peng Guoying Sheng Zhou Zhen South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301PR China State Environmental Protection Key Laboratory of Regional Air Quality Monitoring Guangdong Environmental Monitoring CenterGuangzhou 510308PR China Graduate University of Chinese Academy of Sciences Beijing 100039PR China State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640PR China Atmospheric Environment Institute of Safety and Pollution Control Jinan UniversityGuangzhou 510632PR China

Mixing state of black carbon(BC)on light absorption is of enduring interest due to its tight connection to regional/global *** we present first concurrent measurements of both BC absorption enhancement(Eabs)and chemic...

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

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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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Identification of molecular markers linked to rice bacterial blight resistance genes from Oryza meyeriana

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Frontiers of Agricultural Science and Engineering 2015年第3期2卷 260-265页

作者： Jing WANG Chen CHENG Yanru ZHOU Yong YANG Qiong MEI Junmin LI Ye CHENG Chengqi YAN Jianping CHEN College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321000China State Key Laboratory Breeding Base for Sustainable Control of Plant Pest and Disease Key Laboratory of Biotechnology in Plant Protection of the Ministry of Agriculture and Zhejiang ProvinceInstitute of Virology and BiotechnologyZhejiang Academy of Agricultural SciencesHangzhou 310021China College of Plant Protection Shenyang Agricultural UniversityShenyang 110866China

Y73 is a progeny of asymmetric somatic hybridization between Oryza sativa *** and the wild rice species Oryza *** with a range of strains of Xanthomonas oryzae *** showed that Y73 had inherited a high level of resistance to rice bacterial blight(BB)from its wild *** F2 population of 7125 individuals was constructed from the cross between Y73 and a BB-susceptible cultivar *** testing 615 SSR and STS markers covering the 12 rice chromosomes,186 markers were selected that showed polymorphism between Y73 and *** markers linked to the BB resistance genes in Y73 were scanned using the F2 population and the polymorphic *** SSR marker RM128 on chromosome 1,the STS marker R03D159 on chromosome 3 and the STS marker R05D104 on chromosome 5 were found to be linked to the rice BB resistance genes in Y73.

关键词： Oryza meyeriana bacterial blight resistance gene genetic population linkage molecular marker

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Development and case study of a science-based software platform to support policy making on air quality

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Journal of Environmental Sciences 2015年第1期27卷 97-107页

作者： Yun Zhu Yanwen Lao Carey Jang Chen-Jen Lin Jia Xing Shuxiao Wang Joshua S.Fu Shuang Deng Junping Xie 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 College of Environmental and Energy South China University of Technology Guangzhou Higher Education Mega Center USEPA/Office of Air Quality Planning & Standards RTPNC 27711 USA Department of Civil Engineering Lamar University Department of Civil & Environmental Engineering University of Tennessee Chinese Research Academy of Environmental Sciences

This article describes the development and implementations of a novel software platform that supports real-time, science-based policy making on air quality through a user-friendly interface. The software, RSM-VAT, uses a response surface modeling（RSM） methodology and serves as a visualization and analysis tool（VAT） for three-dimensional air quality data obtained by atmospheric models. The software features a number of powerful and intuitive data visualization functions for illustrating the complex nonlinear relationship between emission reductions and air quality benefits. The case study of contiguous *** that the enhanced RSM-VAT is capable of reproducing the air quality model results with Normalized Mean Bias 〈 2% and assisting in air quality policy making in near real time.

关键词： Air quality Policy making Response surface modeling Emission control scenarios Data visualization

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Occurrence, sources and fate of pharmaceuticals and personal care products in the groundwater: A review

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Emerging Contaminants 2015年第1期1卷 14-24页

作者： Qian Sui Xuqi Cao Shuguang Lu Wentao Zhao Zhaofu Qiu Gang Yu a State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Environment THU-VEOLIA Joint Research Center for Advanced Environmental TechnologyTsinghua UniversityBeijing 100084China

The presence of pharmaceuticals and personal care products(PPCPs)in the aquatic environment may pose potential threat to the ecosystem and human health,hence PPCPs have aroused much concern over the *** contamination of PPCPs in the groundwater,the main source of drinking water supply in many countries and regions,has been extensively studied in the last *** paper reviews the occurrence of frequently detected PPCPs,including antibiotics,anti-inflammatories,lipid-regulators,carbamazepine,caffeine,and N,N-diethyl-m-toluamide in groundwater,with special concern to the progress made over the past three *** emission sources for PPCPs in groundwater,such as wastewater and contaminated surface water,landfills,septic systems,livestock breeding and sewer leakage,are ***,adsorption,migration and degradation,the dominant mechanisms in the subsurface transport and fate of PPCPs,are discussed,and the insights into the future study of PPCPs in the groundwater are provided.

关键词： Pharmaceuticals and personal care products Groundwater Occurrence Source Adsorption Migration Biodegradation

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Evaluating the emission status of light-duty gasoline vehicles and motorcycles in Macao with real-world remote sensing measurement

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Journal of Environmental Sciences 2014年第11期26卷 2240-2248页

作者： Yu Zhou Ye Wu Shaojun Zhang Lixin Fu Jiming Hao School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex

Roadside remote sensing measurement was used to explore the real-world emission status of light duty gasoline vehicles （LDGVs） and motorcycles in Macao. Both fuel-based and distance-based emission factors were derived using the mass balance method. The emission concentration profile of LDGVs illustrated the benefits of tightening emission standards at the source country or region of import. The distance-based emission factors for CO, HC and NOx of LDGVs registered before 2000 were 8.00, 1.04 and 1.36 g/km, respectively. The distance-based emission factors for CO, HC and NOx of LDGVs registered in or after 2000 were 1.16, 0.15 and 0.18 g/km, respectively. The fuel-based CO emission factors of light duty motorcycles （LDMCs） and heavy duty motorcycles （HDMCs） registered before 2000 were about 10 times higher than those of LDGVs of the same age group. As the emissions of LDGVs decreased more quickly after 2000, the gap widens for newer vehicles. The distance-based HC emission factors of LDMCs and HDMCs registered before 2000 were 4.81 and 2.91 g/km, respectively. The distance-based HC emission factors of LDMCs and HDMCs registered in or after 2000 were 3.52 and 0.93 g/km, respectively. The poor emission performance of motorcycles and their larger share in the traffic flow will cause them to be the major contributor to traffic CO and HC emissions. LDMCs, especially two-stroke models, should be the priority for vehicle emission control efforts in Macao.

关键词： Emission Remote sensing Macao Motorcycle

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Effects of pyrolysis temperature on the physicochemical properties of biochar derived from vermicompost and its potential use as an environmental amendment

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RSC Advances 2015年第50期5卷 40117-40125页

作者： Yang, Gang Wang, Zhanghong Xian, Qiming Shen, Fei Sun, Cheng Zhang, Yanzong Wu, Jun State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University 163 Xianlin Avenue Nanjing Jiangsu210046 China Rural Environment Protection Engineering and Technology Center of Sichuan Province Sichuan Agricultural University-Chengdu Campus 211 Huimin Road Wenjiang District Chengdu Sichuan611130 China

The physicochemical properties of biochars, produced from vermicompost and subject to pyrolysis at temperatures between 400-700°C, were investigated, as well as their potential application as an environmental absorbent. Results indicated that the biochar yields were relatively high throughout this temperature range, but it decreased from 78.1% to 70.6% as the pyrolysis temperature increased to 700°C. The mineral nutrients and heavy metals in the biochars were also condensed as the pyrolysis temperature increased. Additionally, the pyrolysis temperature also positively affected the formation of total basic functional groups (TBFGs) and pore development. The biochars generated from vermicompost were characterized by alkalinity, high stability, high buffering ability and high apparent density. When the biochars were employed as an adsorbent for removing heavy metal ions, dyes and organic contaminants, the biochars generated at higher temperatures possessed better adsorption abilities of these contaminants, and the maximum adsorption capacity of the biochar at 700°C was 36.4 mg g-1, 29.5 mg g-1, 12.4 mg g-1, 12.3 mg g-1, 17.8 mg g-1, and 8.2 mg g-1 for Cu2+, Cd2+, methyl orange, rhodamine B, naphthalene, and nitrobenzene, respectively. © The Royal Society of Chemistry 2015.

关键词： Naphthalene

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A software safety assessment method based on the combination of frequency analysis method and analytic hierarchy process

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AIP Conference Proceedings 2017年第1期1839卷

作者： Kehe Wu Jiahui Wei Haifeng Zhang Yingzhe Huo 1School of Control and Computer Engineering North China Electric Power University Beijing 102206 China 2State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing 100192 China 3Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing 100192 China 4State Grid Liaoning Information and Communication Company Shenyang 110016 China

The aim of software safety assessment is to evaluate whether the software meets the safety requirements, and this measurement is very important to ensure and confirm the software safety. This paper presents a new software safety assessment method that is based on the combination of frequency analysis and Analytic Hierarchy Process. First, use frequency analysis method to select some appropriate assessment indicators; then use the Analytic Hierarchy Process to construct the assessment system and assign suitable weight values to indicators at all layers of system; finally rate the software safety. Through the example analysis, it is proved that this method can evaluate software safety very well.

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Characterization of pharmaceutically active compounds in Dongting Lake, China: Occurrence, chiral profiling and environmental risk

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The Science of the total environment 2016年 557-558卷 268-75页

作者： Ruixue Ma Bin Wang Shaoyong Lu Yizhe Zhang Lina Yin Jun Huang Shubo Deng Yujue Wang Gang Yu Beijing Key Laboratory of Emerging Organic Contaminants Control State Key Joint Laboratory of Environmental Simulation and Pollution Control Collaborative Innovation Center for Regional Environmental Quality School of Environment Tsinghua University Beijing 100084 China. Beijing Key Laboratory of Emerging Organic Contaminants Control State Key Joint Laboratory of Environmental Simulation and Pollution Control Collaborative Innovation Center for Regional Environmental Quality School of Environment Tsinghua University Beijing 100084 China. Electronic address: thuwb@***. State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD) State Environmental Protection Key Laboratory for Lake Pollution Control State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China.

Twenty commonly used pharmaceuticals including eight chiral drugs were investigated in Dongting Lake, China. The contamination level was relatively low on a global scale. Twelve pharmaceuticals were identified. The most abundant compound was caffeine followed by diclofenac, DEET, mefenamic acid, fluoxetine, ibuprofen and carbamazepine with mean concentrations from 2.0 to 80.8ngL(-1). Concentrations between East and West Dongting Lake showed spatial difference, with the West Dongting Lake less polluted. The relatively high ratio of caffeine versus carbamazepine (over 50) may indicate there was possible direct discharge of domestic wastewater into the lake. This is the first study presenting a survey allowing for comprehensive analysis of multiclass achiral and chiral pharmaceuticals including beta-blockers, antidepressants and anti-inflammatory drugs in freshwater lake. The enantiomeric compositions presented racemic to weakly enantioselective, with the highest enantiomeric fraction (EF) of 0.63 for fluoxetine. Meanwhile, venlafaxine was identified and evaluated the environment risk in surface water in China for the first time. The results of risk assessment suggested that fluoxetine, venlafaxine and diclofenac acid might pose a significant risk to aquatic organisms in Dongting Lake. The resulting data will be useful to enrich the research of emerging pollutants in freshwater lake and stereochemistry for environment investigations.

关键词： Emerging contaminants Enantiomer composition Freshwater lake PPCPs Risk assessment

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