标題：Ionic composition of submicron particles (PM1.0) during the long-lasting haze period in January 2013 in Wuhan, central China作者：Cheng, Hairong; Gong, Wei; Wang, Zuwu; Zhang, Fan; Wang, Xinming; Lv,Xiaopu; Liu, Jia; Fu, Xiaoxin; Zhang, Gan

來源出版物：JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 卷：26 期：4 頁： DOI：810-817; 10.1016/S1001-0742(13)60503-3 出版年：APR 1 2014

摘要：In January 2013, a long-lasting severe haze episode occurred in Northern and Central China; at its maximum, it covered a land area of approximately 1.4 million km(2). In Wuhan, the largest city in Central China, this event was the most severe haze episode in the 21st century. Aerosol samples of submicron particles (PM1.0) were collected during the long-lasting haze episode at an urban site and a suburban site in Wuhan to investigate the ion characteristics of PM1.0 in this area. The mass concentrations of PM1.0 and its water-soluble inorganic ions (WSIIs) were almost at the same levels at two sites, which indicates that PM1.0 pollution occurs on a regional scale in Wuhan. WSIIs (Na+, NH4+, K+, Mg2+, Ca2+, Cl-, NO3- and SO42-) were the dominant chemical species and constituted up to 48.4% and 47.4% of PM1.0 at WD and TH, respectively. The concentrations of PM1.0 and WSIIs on haze days were approximately two times higher than on normal days. The ion balance calculations indicate that the particles were more acidic on haze days than on normal days. The results of the back trajectory analysis imply that the high concentrations of PM1.0 and its water-soluble inorganic ions may be caused by stagnant weather conditions in Wuhan.

入藏号：WOS:000334259000011

文獻類型：Article

語種：English

作者關鍵詞：PM1.0, water-soluble inorganic ions, haze, source, back trajectory

擴展關鍵詞：CHEMICAL CHARACTERISTICS; PM2.5 AEROSOL; ATMOSPHERIC AEROSOLS; SOUTHERN CALIFORNIA; PARTICULATE MATTER; POLLUTION; AIR; GUANGZHOU; EPISODE; CITY

通訊作者地址：Wang, Zuwu; Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Engn, Wuhan 430079, Peoples R China.

電子郵件地址：rongzi1123@163.com; hjgc1891@163.com

地址：

[Cheng, Hairong; Wang, Zuwu; Zhang, Fan; Lv, Xiaopu; Liu, Jia] Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Gong, Wei] Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China.

[Wang, Xinming; Fu, Xiaoxin; Zhang, Gan] Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China.

研究方向：Environmental Sciences & Ecology

ISSN：1001-0742