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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:
江西理工大学2026年博士研究生招生报名公告（第二批次），可以联系马胜灿老师
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【26年9月入学】中国石油大学（北京） 化学工程专业招2026级学术博士1名
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南京大学 智能驱动与感知材料实验室 诚招推免硕生生/直博生/博士生/科研助理/博士后
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【专业EPR】：自由基(超氧、羟基、单线态氧)，空位缺陷；定量计算，VX: 761711562。
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面上祈福
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真诚才是必杀技
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湖南师范大学（211，双一流）-有机化学-申请审核制博士招生
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【通知】北京信息科技大学仪器科学与光电工程学院招收调剂生（2026），快来报名吧！
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寻找做兼职的同学，长期的（长三角：血管介入医疗器械方面兼职）
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海南大学国家高层次人才团队硕、博士招生
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北京航空航天大学-仿生界面材料科学全国重点实验室郭林院士团队诚聘博士后
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博士申请
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温州医科大学王毅课题组招聘2026级博士生
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【截止2026年5月31日】石家庄铁道大学智能交通课题组诚招理工科背景博士
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【博士招生】武汉科技大学招收材料、化工、环境、冶金类2026年“申请-考核”制博士生
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电子科技大学材料学院SFT创新中心招收准备考硕和读博的科研助理 理工医交叉方向
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北理工国家杰青团队招博士后
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上海大学微电子学院杨军教授团队招聘带编专任教师
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7楼2013-12-31 11:22:02
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
简单回复
2013-12-30 20:59
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lovefay(金币+1): 谢谢参与
ohcesc3楼
2013-12-30 21:12
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lovefay(金币+1): 谢谢参与
1
2013-12-30 22:17
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lovefay(金币+1): 谢谢参与
aiwoa5楼
2013-12-31 07:56
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lovefay(金币+1): 谢谢参与
2013-12-31 08:25
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lovefay(金币+1): 谢谢参与
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