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Response of organic aerosol characteristics to emission reduction in Yangtze River Delta region

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Frontiers of Environmental Science & Engineering 2023年第9期17卷 221-232页

作者： Jinbo Wang Jiaping Wang Wei Nie xuguang chi Dafeng Ge Caijun Zhu Lei Wang Yuanyuan Li Xin Huang Ximeng Qi Yuxuan Zhang Tengyu Liu Aijun Ding Joint International Research Laboratory of Atmospheric and Earth System Sciences School of Atmospheric SciencesNanjing UniversityNanjing 210023China Jiangsu Provincial Collaborative Innovation Center of Climate Change Nanjing 210023China National Observation and Research Station for Atmospheric Processes and Environmental Change in Yangtze River Delta Nanjing 210023China

Organic aerosol(OA)is a major component of atmospheric particulate matter(PM)with complex composition and formation processes influenced by various *** reduction can alter both precursors and oxidants which further affects secondary OA *** we provide an observational analysis of secondary OA(SOA)variation properties in Yangtze River Delta(YRD)of eastern china in response to large scale of emission reduction during chinese New Year(CNY)holidays from 2015 to 2020,and the COVID-19 pandemic period from January to March,*** found a 17%increase of SOA proportion during the COVID *** relative enrichment of SOA is also found during multi-year CNY holidays with dramatic reduction of anthropogenic *** types of oxygenated OA(OOA)influenced by mixed emissions and SOA formation were found to be the dominant components during the lockdown in YRD *** results highlight that these emission-reduction-induced changes in organic aerosol need to be considered in the future to optimize air pollution control measures.

关键词： Emission control Secondary organic aerosol Atmospheric oxidizing capacity Holiday effects COVID-19 lockdown

Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in china

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National Science Review 2021年第2期8卷 51-59页

作者： Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie xuguang chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven J.Davis Qiang Zhang Kebin He School of Atmospheric Sciences Nanjing University chinese Research Academy of Environmental Sciences Department of Earth System Science Tsinghua University State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua University Department of Earth System Science University of California Jiangsu Environmental Monitoring Center Jiangsu Provincial Academy of Environment Science Shanghai Environmental Monitoring Center Beijing Key Laboratory of Airborne Particulate Matter Monitoring Technology Beijing Municipal Environmental Monitoring Center

To control the spread of the 2019 novel coronavirus(COVID-19), china imposed nationwide restrictions on the movement of its population(lockdown) after the chinese New Year of 2020, leading to large reductions in economic activities and associated emissions. Despite such large decreases in primary pollution, there were nonetheless several periods of heavy haze pollution in eastern china, raising questions about the well-established relationship between human activities and air quality. Here, using comprehensive measurements and modeling, we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution. In particular, large decreases in NOx emissions from transportation increased ozone and nighttime NO3radical formation, and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter. Our results, afforded by the tragic natural experiment of the COVID-19 pandemic, indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants.

关键词： COVID-19 haze pollution ozone emission reduction secondary pollution

锰元素影响小麦生长发育、产量和品质的研究进展

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麦类作物学报 2024年第8期44卷 1074-1082页

作者：王佳惠李旭光张弛王鑫鑫王红张瑞芳河北农业大学农学院河北保定071001 河北省耕地质量监测保护中心河北石家庄050000 河北省山区农业技术创新中心河北保定071001 国家北方山区农业工程技术研究中心河北保定071001 河北农业大学河北省山区研究所河北保定071001

锰元素对小麦生长、产量及品质形成有重要作用。合理施用锰肥对小麦有明显的增产提质效果。本文总结了近年来关于锰元素对小麦影响的相关研究结果,阐述了锰元素的生物学功能,对小麦生长发育、产量及品质的影响,小麦锰含量的影响因素以... 详细信息

锰元素对小麦生长、产量及品质形成有重要作用。合理施用锰肥对小麦有明显的增产提质效果。本文总结了近年来关于锰元素对小麦影响的相关研究结果,阐述了锰元素的生物学功能,对小麦生长发育、产量及品质的影响,小麦锰含量的影响因素以及锰肥合理施用方法,探讨了锰元素对小麦生长发育的影响机制以及限制因子,旨在为小麦高产优质栽培中合理施锰提供参考。

关键词：锰元素小麦生长发育产量品质

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Thermogravimetric coupled with Fourier transform infrared analysis study on thermal treatment of monopotassium phosphate residue

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Frontiers of Environmental Science & Engineering 2011年第2期5卷 186-192页

作者： Yuheng FENG xuguang JIANG Yong chi Xiaodong LI Hongmei ZHU State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou 310027China Hangzhou Huanjie Environment Engineering Co.Ltd. Hangzhou 310027China

In china,safe disposal of hazardous waste is more and more a necessity,urged by rapid economic *** pyrolysis and combustion characteristics of a residue from producing monopotassium phosphate(monopotassium phosphate residue),considered as a hazardous waste,were studied using a thermogravimetric,coupled with Fourier transform infrared analyzer(TGFTIR).Both pyrolysis and combustion runs can be subdivided into three stages:drying,thermal decomposition,and final *** average weight loss rate during fast thermal decomposition stage in pyrolysis is higher than *** acid,methane,pentane,(acetyl)cyclopropane,2,4,6-trichlorophenol,CO,and CO_(2) were distinguished in the pyrolysis process,while CO_(2) was the dominant combustion product.

关键词： hazardous waste combustion pyrolysis thermogravimetric coupled with Fourier transform infrared analysis(TG-FTIR) monopotassium phosphate residue

Study on HCI removal for medical waste pyrolysis and combustion using a TG-FTIR analyzer

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Frontiers of Environmental Science & Engineering 2015年第2期9卷 230-239页

作者： Hongmei ZHU Weiying CHEN xuguang JIANG Jianhua YAN Yong chi College of Automation Hangzhou Dianzi University Hangzhou 310018 China Hangzhou Boiler Group Co. Ltd. Hangzhou 310021 China State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310013 China

Under both pyrolysis and combustion condition, HCl removal efficiency for medical waste with Cabased additives was semi-quantitatively studied by means of TG-FTIR. Additionally, the difference of HCl removal efficiency for PVC and medical waste was compared. Experimental results showed that： 1） Thermal degradation of medical waste mainly took place in two steps under both pyrolysis and combustion condition; 2） HC1 emitted at both two steps and HCl concentration increased with the increased of Cl ratio in the medical waste; 3） for the same additive, HCI concentration decreased with the increased of additives amount, that is to say, HCI removal efficiency of medical waste increased as the increased of Ca/Cl molar ratio. Fourth, when Ca（OH）2 was used as additive, HCl removal efficiency for medical waste combustion was a little higher than that for medical waste pyrolysis, but either CaCO3 or CaO was used as additive, it was just opposite, more specifically, when CaCO3 was used as additive with Ca/CI= 1.3, HC1 removal efficiency was 5.49% under pyrolysis condition, but that was only 4.24% under combustion condition. Fifth, under the same Ca/CI molar ratio, HCl removal efficiency for PVC was higher than that for medical waste under both pyrolysis and combustion condition, more specifically, when Ca（OH）2 was used as additive with Ca/Cl-1, HCl removal efficiency was 64.51% for PVC, but that was only 27.66% for medical waste pyrolysis with 4% Cl under pyrolysis condition .

关键词： pollution medical waste pyrolysis combustion TG-FTIR HCl removal

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一种使用GPU加速地震叠前时间偏移的方法

微型机与应用 2011年第10期30卷 87-90页

作者：张清谢海波赵开勇吴庆陈维王狮虎迟旭光褚晓文浪潮集团高效能服务器和存储技术国家重点实验室北京100085 香港浸会大学计算机系中国石油集团东方地球物理勘探有限责任公司河北涿州072751

应用GPU通用高性能编程技术实现一种加速地震叠前时间偏移的新方法。该技术是地震勘探处理的常规流程,其核心算法具有计算密集、数据独立性强、并行性高等特点。通过性能剖析获得其计算热点,通过CUDA技术对其进行并行化改造,并利用CUDA... 详细信息

应用GPU通用高性能编程技术实现一种加速地震叠前时间偏移的新方法。该技术是地震勘探处理的常规流程,其核心算法具有计算密集、数据独立性强、并行性高等特点。通过性能剖析获得其计算热点,通过CUDA技术对其进行并行化改造,并利用CUDA的流技术实现CPU到GPU的异步传输。通过集群环境下的性能测试,应用GPU并行化的PSTM程序可明显缩短运行时间。

关键词：叠前时间偏移地震勘探图像处理器计算统一设备架构流并行计算

微波干化热解湿污泥的失重和升温特性及残渣分析

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环境工程学报 2016年第6期10卷 3173-3179页

作者：戴前进蒋旭光池涌王飞浙江大学能源清洁利用国家重点实验室杭州310027

为研究湿污泥的微波热解特性,将湿污泥与颗粒活性炭（微波吸收剂）以5∶1的重量比例均匀混合,在300~1 600 W区间取11种不同的微波功率进行热解,同时测量样品的重量和温度。研究表明,添加活性炭的湿污泥在微波功率小于400 W只能加热到90... 详细信息

为研究湿污泥的微波热解特性,将湿污泥与颗粒活性炭（微波吸收剂）以5∶1的重量比例均匀混合,在300~1 600 W区间取11种不同的微波功率进行热解,同时测量样品的重量和温度。研究表明,添加活性炭的湿污泥在微波功率小于400 W只能加热到90℃,完成污泥脱水。随着微波功率增大,样品失重加快,升温速率和最终温度都增大。微波功率大于800 W样品在1 000 s内加热到300℃,实现快速升温和热解。此时污泥升温有2个峰值,第1个在100℃左右代表水分析出,第2个峰值随着功率增大而提前,代表污泥残渣由于良好的微波吸收能力在微波下迅速升温。推测污泥介电损耗系数在微波加热过程中先因水分蒸发而减小,后因继续升温而增加,有效促进样品吸收微波和二次升温。污泥的重量消减率在微波功率大于600 W时保持在75%左右。污泥热解残渣的碳氢氮元素含量先受到水分析出,后受到低温裂解释放氨气和胺氮类的影响。

关键词：污泥微波热解失重升温

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高温燃烧过程中Cr的氧化机理及控制方法

化工进展 2016年第B11期35卷 1-10页

作者：蒋旭光董浩吕国均池涌严建华浙江大学能源清洁利用国家重点实验室浙江杭州310027

Cr作为一种有害元素广泛地存在于化石燃料、生活垃圾和工业固体废物中。其中,化石燃料、相当大部分的生活垃圾以及一部分的工业固体废物都通过燃烧过程来回收能量或者进行减容和无害化处理。因此,通过燃烧过程人类向自然界中排放了大量... 详细信息

Cr作为一种有害元素广泛地存在于化石燃料、生活垃圾和工业固体废物中。其中,化石燃料、相当大部分的生活垃圾以及一部分的工业固体废物都通过燃烧过程来回收能量或者进行减容和无害化处理。因此,通过燃烧过程人类向自然界中排放了大量的Cr。最重要的是,热处置过程中的高温氧化环境容易使低迁移性和毒性的Cr(Ⅲ)氧化为高迁移性和毒性的Cr(Ⅵ)。所以,热处置过程中Cr的反应、行为以及产物中Cr的存在形态得到了越来越多的研究。本文综述了燃料中Cr的存在形态、燃烧过程中Cr的氧化机理、燃烧过程中Cr氧化的控制方法以及燃烧产物中Cr的固化方法四方面内容,为减少燃烧过程中的Cr对环境的危害提供理论基础。

关键词：热处置铬形态铬氧化固化

硒的生物学作用及其在牛生产中的应用研究进展

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动物营养学报 2021年第10期33卷 5475-5485页

作者：刘旭光熊康宁汤小朋池永宽贵州师范大学喀斯特研究院国家喀斯特石漠化防治工程技术研究中心贵阳550001

硒是动物必需的营养元素,广泛参与机体组织的生理过程和体内代谢,在动物生长发育过程中发挥着极其重要的营养生理功能。本文综述了硒的生物学功能及其在牛生产中的应用研究进展,并探讨了不同化学形式硒的使用效果,旨在为牛硒营养的研究... 详细信息

硒是动物必需的营养元素,广泛参与机体组织的生理过程和体内代谢,在动物生长发育过程中发挥着极其重要的营养生理功能。本文综述了硒的生物学功能及其在牛生产中的应用研究进展,并探讨了不同化学形式硒的使用效果,旨在为牛硒营养的研究提供参考,为生产上合理选择硒源提供借鉴。

关键词：硒生物学功能牛生产应用