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Particulate matter characterization in a steelworks using conventional sampling and innovative lidar observations

Particuology 2016年第5期14卷 43-51页

作者： benjamin guinot Beatriz Gonzalez Julia Perim De Faria Sumita Keclia Laboratoire d'Aerologie Universite de Toulouse CNRS Universite Paul-Sabatier 14 Avenue Edouard-Belin 31400 Toulouse France

Particulate matter （PM） emissions from steelworks cause public concern. Although end-of-pipe and pro- cess integrated measures have led to a significant drop in emissions of large particles from stacks, fine aerosols were not specifically considered, nor were emissions from fugitive and open sources. In this study, we deployed aerosol samplers together with a scanning ultra-violet （UV） lidar to characterize total suspended particles （TSP）, PM10, and PM2.5, in emissions from a large integrated steelworks in Spain over a 16-day period. We determined the content of carbonaceous, soluble inorganic, mineral dust, and metal species. A positive matrix factorization was carried out on our dataset. Despite mineral dust being predominant in all size fractions, the steelworks was clearly a source of carbonaceous species, resulting in production of secondary inorganic aerosols. In particular, stack emissions were a major contributor of fine particles, while open sources dominated the emissions of TSP, yielding up to 80% of particles larger than PM10. UV lidar provided 2D maps of aerosols in real time, with an ability to detect PM emissions and to visualize complex plumes. We suggest that air quality management of steelworks needs to focus on controlling large and coarse oarticle emissions, esoeciallv those from onen sources.

关键词： Fine aerosols Fugitive emissions Open sources Chemical composition Trace metals UV lidar

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Seasonal Variations of Number Size Distributions and Mass Concentrations of Atmospheric Particles in Beijing

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Advances in Atmospheric Sciences 2005年第3期22卷 401-407页

作者：于建华 benjamin guinot 虞统王欣刘文清 Beijing Municipal Environmental Monitoring Center(BMEMC)Beijing 100044 Anhui Institute of Optics and Fine Mechanics Chinese Academy of SciencesHefei 230031 Laboratoire des Sciences du Climat et de l'Environment (LSCE) France Beijing Municipal Environmental Monitoring Center (BMEMC)Beijing 100044 Beijing Municipal Environmental Monitoring Center (BMEMC) Beijing 100044

Particle number and mass concentrations were measured in Beijing during the winter and summer periods in 2003, together with some other parameters including black carbon (BC) and meteorological conditions. Particle mass concentrations exhibited low seasonality, and the ratio of PM2.5/PM10 in winter was higher than that in summer. Particle number size distribution (PSD) was characterized by four modes and exhibited low seasonality. BC was well correlated with the number and mass concentrations of accumulation and coarse particles, indicating these size particles are related to anthropogenic activities. Particle mass and number concentrations (except ultra-fine and nucleation particles) followed well the trends of BC concentration for the majority of the day, indicating that most particles were associated with primary emissions. The diurnal number distributions of accumulation and coarse mode particles were characterized by two peaks.

关键词： Beijing particles particle number size distribution mass concentrations black carbon ultra- fine particles

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Characteristics of Carbonaceous Particles in Beijing During Winter and Summer 2003

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Advances in Atmospheric Sciences 2006年第3期23卷 468-473页

作者：于建华陈添 benjamin guinot Helene CACHIER 虞统刘文清王欣 Beijing Municipal Environmental Monitoring Center Labomtoire des Sciences du Climat et de l'Environment Anhui Institute of Optics and Fine Mechanics

Campaigns were conducted to measure Organic Carbon （OC） and Elemental Carbon （EC） in PM2.5 during winter and summer 2003 in Beijing. Modest differences of PM2.5 and PM10 mean concentrations were observed between the winter and summer campaigns. The mean PM2.5/PM10 ratio in both seasons was around 60%, indicating PM2.5 contributed significantly to PM10. The mean concentrations of OC and EC in PM2.5 were 11.2±7.5 and 6.0±5.0 μg m^-3 for the winter campaign, and 9.4±2.1 and 4.3±3.0 μg m^-3 for the summer campaign, respectively. Diurnal concentrations of OC and EC in PM2.5 were found high at night and low during the daytime in winter, and characterized by an obvious minimum in the summer afternoon. The mean OC/EC ratio was 1.87±0.09 for winter and 2.39±0.49 for summer. The higher OC/EC ratio in summer indicates some formation of Secondary Organic Carbon （SOC）. The estimated SOC was 2.8 μg m^-3 for winter and 4.2 μg m^-3 for summer.

关键词： elemental carbon organic carbon PM2.5 PM10 secondary organic carbon

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Exposures to particulate matter at middle school in Xi'an: A study on health risks and effective inflammatory responses

Exposures to particulate matter at middle school in Xi'an: A...

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第十三届全国气溶胶会议

作者： Hongmei XU benjamin guinot Junji CAO Department of Environmental Science and Engineering Xi’an Jiaotong University Key Lab of Aerosol Chemistry&Physics Institute of Earth EnvironmentCAS Laboratoire d'Aérologie Universitéde ToulouseCNRSUPS

Air pollutant measurement and respiratory inflammatory tests were conducted at a junior secondary school in Xi’an, Northwestern *** substances including particulate matters(PM), black carbon(BC), and particle-bounded polycyclic aromatic hydrocarbons(PAHs) were quantified both indoors and outdoors of the *** characterization with organic tracers and particle sizedistribution demonstrated that the school’s air was mostly polluted by combustion emissions from the surrounding *** evaluation of health assessment related to air quality was conducted by two methods, including potential risk estimation of air pollutants and direct respiratory inflammatory *** incremental lifetime cancer risks(ILCRs) associated with PAHs were estimated, and were 1.62×10 and 2.34×10 respectively, for indoor and outdoor fine *** the values exceeded the threshold value of 1×10, demonstrating that the carcinogenic PAHs are a health threat to the *** inflammatory responses of 50 students who studied in the sample classroom were examined with a fractional exhaled nitric oxide(Fe NO) test, with the aid of health *** average Fe NO concentration was 17.4±8.5 ppb, which was slightly lower than the recommended level of 20 ppb established by the American Thoracic Society(ATS) for ***, a wide distribution and 6% of the values were >35 ppb, suggesting that the potentials was still high for eosinophilic inflammation and responsiveness to corticosteroids.A preliminary interpretation of the relationship between air toxins and respiratory inflammatory response demonstrated the high exposure cancer risks and inflammatory responses of the students to PMs in the city.

关键词： PM BC and PAHs Cancer risks FeNO Health assessment

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西安市初中学校大气颗粒物中多环芳烃的污染特征及健康风险评价

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地球环境学报 2012年第5期3卷 1078-1084页

作者：牛馨祎曹军骥徐红梅 guinot benjamin 曹南颖西安交通大学地球环境科学系西安710049 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室西安710075 西安交通大学全球环境变化研究院西安710049 中国科学院大学北京100049

对西安市某初中学校冬春季4个不同粒径大气颗粒物中多环芳烃(PAHs)水平的研究表明,此中学室内外PM_(2.5)样品中PAHs的平均浓度为82.57 ng·m^(-3),室外PAHs浓度大于室内浓度,其中具有强致癌性组分BaP的平均浓度为3.24 ng·m^(-3)。PM_(2... 详细信息

对西安市某初中学校冬春季4个不同粒径大气颗粒物中多环芳烃(PAHs)水平的研究表明,此中学室内外PM_(2.5)样品中PAHs的平均浓度为82.57 ng·m^(-3),室外PAHs浓度大于室内浓度,其中具有强致癌性组分BaP的平均浓度为3.24 ng·m^(-3)。PM_(2.5)中PAHs浓度明显高于其他大粒径颗粒物的PAHs浓度,这表明颗粒物粒径越小PAHs浓度就越高,也间接表明其对人体健康,尤其是青少年健康的影响也越大。研究期间PAHs的BaP平均等效浓度(BEQ)为9.30,且室外BEQ值大于室内。

关键词： PM2 .5 多环芳烃健康风险评价初中学校西安

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