| 查看: 1583 | 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:
原子层沉积（ALD）磁控溅射PECVD等微纳代工服务：18817872921
+1/86
-
上海师范大学生物医用材料方向招收2026级博士研究生
+1/81
-
湖南师范大学医工交叉科研团队招收计算机博士生
+1/76
-
澳门大学智慧城市物联网国重“结构智能感知、健康监测与无损检测”研究方向博士后招聘
+1/73
-
山东征女友，坐标济南
+1/58
-
考核制博士自荐
+1/37
-
中科院理化技术研究所张飞龙研究员/王树涛研究员团队招生（博士/硕士）
+1/29
-
SCI，计算机相关可以写
+1/21
-
SCI，计算机相关可以写
+1/19
-
SCI，计算机相关可以写
+1/17
-
SCI，计算机相关可以写
+1/17
-
SCI，计算机相关可以写
+1/15
-
SCI，计算机相关可以写
+1/14
-
中国科学院大学-杨晗课题组-诚聘-博士后、副研究员
+1/7
-
【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】
+1/7
-
中科院（广州）研究团队招聘无机非金属材料方向特别研究助理或博后
+1/4
-
[招募] 上海交通大学环境健康课题组科研实习生（环境健康与生物学大数据方向）
+1/2
-
上海理工顾敏院士/李蔚团队招收2026级博士研究生 （集成光学、量子信息方向）
+1/2
-
土木、交通工程专业博士后站有吗？（无博士毕业3年要求+可接受兼职博后）
+1/1
-
【深容SCI写作智能体】Abstract实测
+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
·