中文版 | English
CSpace
Single particle characterization of summertime particles in Xi'an (China)
Chen, Yang1,2; Liu, Huanwu3; Yang, Fumo1,4,5; Zhang, Shumin6; Li, Wentao3; Shi, Guangming1,4; Wang, Huanbo1; Tian, Mi1; Liu, Suixin2; Huang, Rujin2
2018
摘要Urban particles in Xi'an during summertime were investigated using a single particle aerosol mass spectrometer (SPAMS). Twelve major particle types were resolved, including EC-Sul-Nit (-Sul stands for sulfate, -Nit for nitrate, and 25% in number fraction), EC(6%), EC-Nit (12%) and, EC-Sul (8%), mixed Elemental and Organic Carbon-Sul-Nit (9%), ECOC-Sul (8%), K-Nit (12%), OC (8%), NaK-Nit (5%), Fe-Nit (5%), Ca-Nit (1%), and Other (1%). Among these particle types, chemical composition, mixing state, and wind-dependent analyses were conducted to investigate their originations and sources. During summertime, traffic-related particles were up to 83% in the SPAMS dataset. Two major originations of urban particles were identified, including the local aging and short-distance transport mainly from the southeast. Size-resolved relative acidity ((sulfate + nitrate) / ammonium) analysis suggested that urban particles were more acidic with an aerodynamic diameter © 2018
DOI10.1016/j.scitotenv.2018.04.388
发表期刊Science of the Total Environment
ISSN00489697
卷号636页码:1279-1290
收录类别EI
语种英语
EISSN18791026