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北京雾霾研究成果在Atmospheric Chemistry and Physics发表，谁分享下啊
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回复此楼» 抢金币啦！回帖就可以得到:
2026年人文教育与社会发展国际会议（HESD 2026）
+1/992
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求助DL 5009.1-2014
规程 第1部分：火力发电》
+1/488
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沈阳工业大学 环境电化学技术研究团队 招收硕士研究生（学硕/专硕）
+2/200
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双一流大学湘潭大学“化工过程模拟与强化”国家地方联合工程研究中心招收博士生
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双一流湘潭大学化工学院招收化工、能源动力、工程热物理相关研究生调剂
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深圳技术大学药学院｜接收2026年推免季研究生
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爱丁顿实验
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深圳技术大学药学院接收2026年推免季研究生
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中科院地质地球所招收博士/博士后，待遇优厚！！！！
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高分辨质谱测试丨科研单位对外服务
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【博士招生】招收材料、化工、环境、冶金类2027年“申请-考核”制博士生
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西安：诚征女友
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香港城市大学物理学系分子电子学方向招收2027年秋季入学博士生
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上海交通大学化学化工学院张智涛课题组诚聘博士后
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武汉大学电信学院-梁国镇课题组-诚招硕士博士 - 深紫外光源方向 - 2027年入学
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2026年诺贝尔生理学或医学奖深度解读：一束光如何 “指挥” 大脑？
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PLA邻位连接技术：空间蛋白互作的精准定位与直观可视
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武汉大学电信学院-梁国镇课题组-诚招硕士博士 - 深紫外光源方向 - 2027年入学
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8楼2014-01-25 10:03:42
9楼2014-01-27 00:32:40
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小木虫: 金币+0.5, 给个红包，谢谢回帖
小木虫: 金币+0.5, 给个红包，谢谢回帖
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Atmos. Chem. Phys., 13, 7053–7074, 2013 www.atmos-chem-phys.net/13/7053/2013/ Chemical characterization and source apportionment of PM2.5 in Beijing: seasonal perspective R. Zhang1,*, J. Jing1,2,*, J. Tao3,*, S.-C. Hsu4,*, G. Wang5, J. Cao5, C. S. L. Lee6, L. Zhu3, Z. Chen7, Y. Zhao7, and Z. Shen8 Abstract. In this study, 121 daily PM2.5 (aerosol particle with aerodynamic diameter less than 2.5 μm) samples were collected from an urban site in Beijing in four months between April 2009 and January 2010 representing the four seasons. The samples were determined for various compositions, including elements, ions, and organic/elemental carbon. Various approaches, such as chemical mass balance, positive matrix factorization (PMF), trajectory clustering, and potential source contribution function (PSCF), were employed for characterizing aerosol speciation, identifying likely sources, and apportioning contributions from each likely source. Our results have shown distinctive seasonality for various aerosol speciations associated with PM2.5 in Beijing. Soil dust waxes in the spring and wanes in the summer. Regarding the secondary aerosol components, inorganic and organic species may behave in different manners. The former preferentially forms in the hot and humid summer via photochemical reactions, although their precursor gases, such as SO2 and NOx, are emitted much more in winter. The latter seems to favorably form in the cold and dry winter. Synoptic meteorological and climate conditions can overwhelm the emission pattern in the formation of secondary aerosols. The PMF model identified six main sources: soil dust, coal combustion, biomass burning, traffic and waste incineration emission, industrial pollution, and secondary inorganic aerosol. Each of these sources has an annual mean contribution of 16, 14, 13, 3, 28, and 26 %, respectively, to PM2.5. However, the relative contributions of these identified sources significantly vary with changing seasons. The results of trajectory clustering and the PSCF method demonstrated that regional sources could be crucial contributors to PM pollution in Beijing. In conclusion, we have unraveled some complex aspects of the pollution sources and formation processes of PM2.5 in Beijing. To our knowledge, this is the first systematic study that comprehensively explores the chemical characterizations and source apportionments of PM2.5 aerosol speciation in Beijing by applying multiple approaches based on a completely seasonal perspective。 |
10楼2014-01-27 10:16:30
11楼2014-01-27 16:54:36