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第19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2012年学术年会

作者： Mei Zheng Zifa Wang Zhen Zhou Zhong Fu Huaiyu Fu Caiqing Yan Li Zhang Jian Gao Fahe Chai Yujiao Zhu Xiaohong Yao Yele Sun Guangzhou Hexin Analytical Instrument Co. Ltd. Guangzhou 510530 China Guangzhou Hexin Analytical Instrument Co. Ltd. Guangzhou 510530 China School of Environmental and Chemical Engineering Shanghai University Shanghai 200444 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Science Beijing 100012 China Key Laboratory of Marine Environmental Science and Ecology Ministry of Education Ocean University of China 238 Songling Road Qingdao 266100 PR China State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University Beijing 100871 China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China School of Environmental and Chemical Engineering Shanghai University Shanghai 200444 China

Haze episodes occur frequently in Beijing in recent years and its characteristics and formation mechanisms remain unclear. In this work, a newly-developed instrument, single particle aerosol mass spectrometry (SPAMS) was used to characterize size distribution and chemical species of single particles (200-2000 nm) with 5-min time resolution during December 10 to 23, 2011 in Beijing. Another two online instruments including aerosol chemical speciation monitor (ACSM) and fast mobility particle sizer (FMPS) were simultaneously deployed at two different sites in Beijing to study the detailed chemical composition and size distribution of fine particles. During the campaign, a pollution episode was observed, which lasted about 12h and was characterized by high PM2. 5 mass concentration and low visibility (5. 3 km). Our results indicated that particle characteristics between haze and non-haze days were different in (1) Size distribution: based on FMPS data (measuring size range of 5. 6-560 nm), particles peaked in 10-40 nm in the clean day and shifted to larger size (about 100 nm) during the haze episodic day. However, from SPAMS (measuring size range of 200-2000 nm) data, highest particle counts occurred around 400-800 nm. Particles peaked around 500-600 nm in the morning and shifted to a wider range of 400-800 nm after noon time during the haze day, indicating hygroscopic growth under high relative humidity. Particles in these size ranges could contribute significantly to light extinction. However, in the clean day, particles peaked around a narrow range (500-550 nm); (2) Chemical species: SPAMS data indicated that the winter haze episodic day included a higher fraction of sulfate, ammonium and lead particles, but a lower fraction of nitrate compared to clean day. Chemical speciation analysis using ACSM showed that both organic matter and secondary ions increased significantly during the haze episode; (3) Sources: Several major sources for particles were distinguished by

关键词： Haze Online Measurements Single Particle Sources Size Chemical Species Beijing

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Formation and causes of NO_x pollution on the east side of the Taihang Mountains in China

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Chinese Science Bulletin 2011年第19期56卷 2044-2049页

作者： TIAN HeZhong WANG Yan ZHAO Dan CHAI FaHe XING ZiShan CHENG Ke State Key Joint Laboratory of Environmental Simulation & Pollution Control School of Environment Beijing Normal University Beijing 100875 China Chinese Research Academy of Environmental Sciences Beijing 100012 China School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Tropospheric column amounts of NO 2 from OMI/Aura products were applied to investigate the seasonal variation of NO x on the east side of the Taihang Mountains (ESTM) in China. The NO 2 concentration varied seasonally, with winter maxima and summer minima. To explore the causes of the heavy NO 2 pollution in this region, wind field simulations were conducted by using the Fifth-Generation NCAR/Penn state Mesoscale Model (MM5). MM5 simulations showed that wind directions in the ESTM region were dominated by northeasterly and northwesterly winds throughout the year and to a lesser degree by southwesterlies. Elevated NO 2 concentrations (higher than 50×10 15 molec/cm 2 ) occurred in three meteorological situations: convergent wind fields (5 days), northeasterly winds (2 days), and calm days (1 day) in January. Although the local anthropogenic NO x emission strength was not so high as that in other developed areas, the calms and frequent occurrence of convergent wind fields, as well as unfavorable terrains for diffusion, resulted in the accumulation of atmospheric pollutants and hence heavy NO x pollution. Furthermore, long-distance NO x transportation from the Beijing-Tianjin-Tangshan region to the ESTM area could be seen when the wind was from a northeasterly direction, especially under high wind speeds.

关键词：氮氧化物氮污染原因山东中国二氧化氮浓度宾夕法尼亚州立大学 ESTM

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分子光谱技术在大气颗粒物非均相化学研究中的应用

分子光谱技术在大气颗粒物非均相化学研究中的应用

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第十七届全国分子光谱学学术会议

作者： CHEN Zhong-ming 陈忠明 ZHAO Yue 赵岳 State Key Laboratory of Environmental Simulation and Pollution Control College of Environmental Sci 北京大学环境科学与工程学院环境模拟与污染控制国家重点联合实验室北京 100871

对流层大气颗粒物参与的复杂非均相化学过程严重影响着区域空气质量和全球气候变化，多年来已成为国内外大气环境领域的研究热点。傅里叶变换红外光谱和拉曼光谱技术作为一种原位和在线研究方法已成为研究大气非均相化学的重要手段。基... 详细信息

对流层大气颗粒物参与的复杂非均相化学过程严重影响着区域空气质量和全球气候变化，多年来已成为国内外大气环境领域的研究热点。傅里叶变换红外光谱和拉曼光谱技术作为一种原位和在线研究方法已成为研究大气非均相化学的重要手段。基于傅里叶变换红外光谱和拉曼光谱技术的基本特征，深入总结了这两种分子光谱技术在大气颗粒物非均相化学研究中的应用进展，分析了它们在应用中所面临的挑战，并结合当前和未来大气非均相化学的研究需要，提出了它们今后的发展方向。

关键词：大气污染大气颗粒物非均相化学分子光谱技术

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Temperature effect on the kinetics of persulfate oxidation of p-chloroaniline

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Chinese Chemical Letters 2011年第3期22卷 358-361页

作者： Yong Qing Zhang Xiao Zhe Du Wei Lin Huang College of Environmental Science and Engineering South China University of Technology Guangzhou 510006 China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education Guangzhou 510006 China Department of Environmental Sciences Rutgers. The State University of New Jersey New Brunswick NJ 08901 USA

The kinetics of heat-facilitated persulfate oxidation of p-chloroaniline（PCA） in aqueous solutions was measured at five different temperature conditions and at four different oxidant *** PCA degradation was found to follow a pseudo-first-order decay model when the persulfate was *** pseudo-first-order rate constants of PCA degradation by persulfate（50 mmol/ L） at pH 7.0 are 0.12×10^-4,0.28×10^-4,0.43×10^-4,0.83×10^-4,1.32×10^-4 s^-1 at 10,20,30,40 and 50℃,respectively. Under the above reaction conditions,the reaction has activation energy of 49.97 kJ/*** observed rate was found to be function of temperature and oxidant *** temperature and increasing persulfate concentration can significantly accelerate the PCA degradation.

关键词： Persulfate p-Chloroaniline Kinetics In situ chemical oxidation Temperature

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NO_x Release from Snow and Ice Covered Surface in Polar Regions and the Tibetan Plateau

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Advances in Climate Change Research 2011年第3期2卷 141-148页

作者： Feng Wang Weili Lin Junxia Wang Tong Zhu Centre for Atmosphere Watch ~ Services Meteorological Observation Centre . China Meteorological Administration Beijing 100081 China State Key Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University Beijing 100871 China China Quality Certification Center Beijing 100070 China

The exchanges of NOx between snow and air have significant impact on the atmospheric components and photochemical processes in the overlying boundary layer. Such exchanges increase the oxidizing capacity of the atmosphere and may have a crucial impact on the air signals that are retrieved from ice cores. In the recent years, sunlit snow and ice have been demonstrated to be important NOx sources in the polar atmospheric boundary layer. This paper makes a thorough review on the release of NOx from snow and ice, including field observations and experimental evidences, release mechanisms and influential parameters that affect such a release process, polar NOx concentrations and fluxes, and environmental impacts of the chemical processes of NOx in the polar atmospheric boundary layer. In the Tibetan Plateau, the released NOx observed recently in the sunlit snow/ice-cover is 1-order magnitude more than that in polar regions, but further scientific research is still needed to reveal its impact on the atmospheric oxidizing capacity.

关键词： NOx exchange between snow and air polar area atmospheric oxidizing capacity Tibetan Plateau

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Application of Micro-Raman Spectrometry to the Study of Atmospheric Heterogeneous Reactions

Application of Micro-Raman Spectrometry to the Study of Atmo...

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第三届亚洲光谱会议

作者： Ming-Jin Wang Tong Zhu De-Feng Zhao Xiao-Juan Song Ting Yu Nan Zheng State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking University

Atmospheric heterogeneous reactions are very important for their impacts on many aspects of the *** order to make the laboratory simulation of atmospheric heterogeneous reactions more similar to the real atmosphere,th... 详细信息

关键词： Application of Micro-Raman Spectrometry to the Study of Atmospheric Heterogeneous Reactions Raman

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Growth and Repair Potential of Three Species of Bacteria in Reclaimed Wastewater after UV Disinfection

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Biomedical and environmental Sciences 2011年第4期24卷 400-407页

作者： GUO MeiTing HUANG JingJing HU HongYing LIU WenJun Environmental Simulation and Pollution Control State Key Joint Laboratory School of EnvironmentTsinghua UniversityBeijing 100084China Graduate School at Shenzhen Tsinghua UniversityShenzhen 518055China

Objective The growth and repair potential of three typical microorganisms in reclaimed water after UV disinfection was investigated to assess the effects of photo-reactivation and dark repair of microorganisms,and the microbial safety of reclaimed water following this *** The growth and repair potential of Escherichia coli,a fecal coliform strain and Bacillus subtilis in the effluent of a biological wastewater treatment plant disinfected by a low-pressure UV lamp were *** Any increase in bacterial numbers in the effluent after UV disinfection was due to damage *** to photo-reactivating light for 8-10 h after UV irradiation with a dose of 5 mJ/cm 2,the highest percentage of photo-reactivation observed for *** and the fecal coliform strain was 29% and 15% *** showed little photo-reactivation under these *** percentage of photo-reactivation was related to the UV dose and the photo-reactivating time,and a function was developed to forecast the final concentrations of *** and the fecal coliform strain after UV disinfection with possible *** Different species of bacteria displayed different responses to UV light and different repair *** repair of indigenous bacteria in wastewater needs to be investigated in future work.

关键词： Wastewater reclamation UV disinfection Growth Repair Photo-reactivation Dark repair

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Dual enzymatic saccharification of food waste for ethanol fermentation

Dual enzymatic saccharification of food waste for ethanol fe...

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2nd Annual Conference on Electrical and control Engineering, ICECE 2011

作者： Zhang, Xiangfeng Richard, Tom State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Department of Agricultural and Biological Engineering Pennsylvania State University University Park PA 16802-1909 United States

ISBN: (纸本)9781424481637

Lower efficiency serves as limiting factor in the enzymatic saccharification of food waste (FW) for ethanol fermentation. We investigated the effects of temperature, tetracycline;the optimization of dual enzymatic inoculation using simplex lattice design;as well as batch ethanol fermentation based on optimized FW saccharification. The moderate temperature (50 C) was proper to balance the saccharification efficiency and reducing sugar loss. The tetracycline inoculation (80 mg/L) dramatically prevented the reducing sugar loss of saccharification by inhibiting the microbial contaminants. The optimized ratio of -amylase and amyloglucosidase was 0.5:0.5, which indicated that the experimental results under the optimum conditions agreed well with the model predictions. The ethanol yield reached 0.25 g/g dry FW under optimum conditions of saccharification indicating this strategy could be promising to utilize FW. © 2011 IEEE.

关键词： Temperature

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PERFLUORINATED COMPOUNDS IN SEDIMENTS OF THE HAIHE RIVER, CHINA

PERFLUORINATED COMPOUNDS IN SEDIMENTS OF THE HAIHE RIVER, CH...

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第十四届北京分析测试学术报告会暨展览会(BCEIA 2011)

作者： Xiuli Zhao Xinghui Xia Zhineng Dai Shangwei Zhang State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentBeijing Normal University

Perfluorinated compounds(PFCs)have been widely used for more than 50 years due to their excellent thermal stability and hydrophobic/hydrophilic *** some PFCs have been known to be persistent,bioaccumulative and tumori... 详细信息

关键词： CHINA PERFLUORINATED COMPOUNDS IN SEDIMENTS OF THE HAIHE RIVER

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pollution discharge feature of stormwater runoff on two urban underlying surfaces and treatment in Beijing

Pollution discharge feature of stormwater runoff on two urba...

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2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011

作者： Wei, Ouyang Shen, Xin Li, Xiangyi Song, Tianzei State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Second High School Attached Beijing Normal University 12 Xinjiekou Wai Street Beijing 100088 China

ISBN: (纸本)9781424462551

In this paper, stormwater runoff from an urban traffic road and building located in Beijing, China, was characterized to measure the stormwater runoff discharge rates and pollutant concentrations. Based on monitoring, the runoff water quality on two underlying surface conditions was analyzed. The temporal dynamics of chemical oxygen demand (COD), NH3- N, NO3-N and total phosphorus (TP) were similar and the concentration dropped quickly in the first half hour. The initial concentration of COD, NH3-N, NO 3-N and TP are worse than the fifth category of national surface water standard, some of them were even beyond the standard of the third category of emission discharge standard. In the urban water resource conservation, reuse of stormrain is a good potential. So, a simple combination of treatment methods with Quartz sand and activated carbon was proposed to reduce the pollution concentration. The COD and TP concentration decreased significantly after the treatment, and the removal rate is sensitive to the hydrological loading of inlet water. The activated carbon did not have impact on NH3-Nand NO3-N and the removal rate is stable on three kinds of hydrological scenarios. The study demonstrates the discharge characteristics of urban sotrmrain runoff and provides the results of simple and cheap treatment equipment. © 2011 IEEE.

关键词： Chemical oxygen demand

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