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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:
凝胶成像，WB化学发光成像系统专业制造商-上海新叶分析仪器
+1/87
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【调剂信息】山东科技大学（青岛校区）材料助剂研究团队招收调剂硕士研究生
+1/84
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燕山大学亚稳材料全国重点实验室2026年博士研究生招生信息
+1/82
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香港城市大学（东莞）雷进程博士课题组招聘研究助理
+1/79
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安心播种，静待花开
+1/68
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中国林科院博士招生/读博
+2/38
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盐城师范学院生物与医药（生物技术与工程领域）还有调剂名额
+1/36
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坐标河北邢台，征女友
+1/35
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还有名额！！辽石化新材料学院材料专业调剂 理转工 / 学专互调
+1/31
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西工大国家级青年人才招聘微尺度传热方向博士后/研究助理
+1/29
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大家好，请教个问题，连续挤出胶皮，有没有在线降低气味VOC的方式。
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南京林业大学-国家级青年人才团队 招2026级申请考核制博士 （有机合成化学方向）
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武汉工程大学环境生态与生物工程学院资源生物技术团队师资博士后招聘启事
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香港科技大学用于先进LCD器件的偏振发射钙钛矿纳米棒增强薄膜
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C13、N15标记植物，助力土壤碳氮循环与地学研究实操
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省重点实验室招收调剂生，海洋生物专业，名额充足，可快速安排复试并出结果
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广东石油化工学院刘诗咏教授团队化学化工、材料科学等方向尚有调剂名额
+1/7
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山东大学集成电路学院招博士了
+1/5
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淡水养殖英语刊物
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安徽工程大学化学与环境工程学院2026级硕士研究生还有部分调剂名额-资源与环境专硕
+1/1
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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