| 查看: 1632 | 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:
坐标上海，诚征女友，非常 着急，私信必回
+1/468
-
西湖大学工学院智能微型机器人实验室博士后招聘启事
+4/228
-
深圳技术大学集成电路与光电芯片学院郝俊杰课题组诚聘博士后、研究助理、访问学生
+2/120
-
济南大学林秀娟教授招收材料类博士生
+1/88
-
温州大学吕晶晶课题组2026年招生
+1/80
-
福建师范大学招收2026年化学、材料硕士3-4名
+1/78
-
坐标广州，男征女，双向奔赴
+1/67
-
0854电子信息调剂，闽南师大光电芯片研发实验室
+1/42
-
0854电子信息调剂，闽南师大光电芯片研发实验室，柯少颖教授课题组，集成电路
+1/39
-
26年博士自荐
+1/17
-
学术/专业硕士调剂——化学、资源与环境
+1/15
-
新加坡国立大学药学系化学生物学课题组招PhD
+1/8
-
新加坡国立大学药学系化学生物学课题组招PhD
+1/8
-
中国科学院过程工程研究所助理研究员（正式职工）和博士后招聘启事
+1/5
-
福建师范大学海峡柔性电子学院招收2026调剂硕士
+1/3
-
深圳大学蔡兴科课题组博士后及研究助理招聘
+1/2
-
125603工业工程与管理调剂
+1/2
-
Top-88悉尼科技大学数据科学/AI 招收2027年入学 校奖 博士生1到2名(国际和本地学生）
+1/2
-
北京高校副校长团队招收机械类，环境类学硕和专硕
+1/2
-
招收环工、环科、化工、应化、化学、生工、生物、材化等相关专业研究生，要求过国家线
+1/2
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
·
