| 查看: 1606 | 回复: 10 | ||
[交流]
北京雾霾研究成果在Atmospheric Chemistry and Physics发表，谁分享下啊
|
||
回复此楼» 抢金币啦！回帖就可以得到:
电力全国重点实验室双一流A类长江学者团队招2026年全日制博士1-2名/博士后
+2/84
-
【2026/2027 哈工大计算机类博士招生】
+1/78
-
美国R1大学--德克萨斯大学埃尔帕索分校（UTEP） 土木、环境与建筑工程系 博士招生
+1/76
-
“超分子材料交叉研究团队”联合诚聘博士后 [清华/吉大/复旦/北大]
+1/74
-
大连工业大学 超临界流体技术团队（纺材学院）招收2026级“申请-考核制”博士生
+1/55
-
科罗拉多大学 Congjun Yu 课题组招聘
+1/35
-
教育部重点实验室和清华大学某国家重点实验室，联合培养硕生、博生，并长期招博士后
+1/27
-
武汉工程大学绿碳技术与智能材料课题组诚招2026年博士研究生
+2/26
-
中山大学柔性电子学院黄维院士团队诚招柔性可穿戴电子方向博士生（2026年9月入学）
+1/11
-
太原理工大学集成电路学院院长团队招收2026年博士研究生
+1/10
-
2026年天津大学杰青团队招收化学合成、计算机和器件的方面博士
+1/8
-
招聘农用化学产品销售一名，须具备良好的英语口语，以便拓展海外市场。
+1/8
-
【博士后/科研助理招聘-北京理工大学-集成电路与电子学院-国家杰青团队】
+1/6
-
华南理工大学宋波教授联合唐本忠院士招聘化学和材料方向博士后（长期有效）
+1/5
-
《中文期刊点评》这个模块，怎么不能点评期刊了呢自动跳转到主页了
+1/5
-
【博士后/科研助理招聘-北京理工大学-集成电路与电子学院-国家杰青团队】
+1/4
-
上海理工大学顾敏院士、张轶楠教授团队 招聘 2026级 光学工程 博士生
+2/4
-
诚征女友，非诚勿扰
+3/2
-
【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
+2/2
-
苏州大学医学院纳米生物医学方向招收申请考核制博士生1名
+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
★
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
|
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
回复
lovefay(金币+1): 谢谢参与
ohcesc3楼
2013-12-30 21:12
回复
lovefay(金币+1): 谢谢参与
1
2013-12-30 22:17
回复
lovefay(金币+1): 谢谢参与
aiwoa5楼
2013-12-31 07:56
回复
lovefay(金币+1): 谢谢参与
2013-12-31 08:25
回复
lovefay(金币+1): 谢谢参与
·