Regional contribution to PM1 pollution during winter haze in Yangtze River Delta, China

被引：56
作者：
Tang, Lili [1 ,2 ]
Yu, Hongxia [3 ]
Ding, Aijun [4 ,5 ]
Zhang, Yunjiang [1 ,2 ]
Qin, Wei [2 ]
Wang, Zhuang [1 ]
Chen, Wentai [1 ]
Hua, Yan [1 ,2 ]
Yang, Xiaoxiao [1 ,2 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Jiangsu, Peoples R China
[2] Jiangsu Environm Monitoring Ctr, Nanjing 210036, Jiangsu, Peoples R China
[3] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210093, Jiangsu, Peoples R China
[4] Nanjing Univ, Inst Climate & Global Change Res, Nanjing 210093, Jiangsu, Peoples R China
[5] Nanjing Univ, Sch Atmospher Sci, Nanjing 210093, Jiangsu, Peoples R China
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2016年 / 541卷
基金：
中国国家自然科学基金;
关键词：
Haze; Submicron particulate matter; Components; Regional source; Yangtze River Delta; POSITIVE MATRIX FACTORIZATION; SUBMICRON AEROSOLS; EVOLUTION; NITRATE;
D O I：
10.1016/j.scitotenv.2015.05.058
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
To quantify regional sources contributing to submicron particulate matter (PM1) pollution in haze episodes, online measurements combining two modeling methods, namely, positive matrix factorization (PMF) and backward Lagrangian particle dispersion modeling (LPDM), were conducted for the period of one month in urban Nanjing, a city located in the western part of Yangtze River Delta (YRD) region of China. Several multi-day haze episodes were observed in December 2013. Long-range transport of biomass burning from the southwestern YRD region largely contributed to PM1 pollution with more than 25% of total organicsmass in a lasting heavy haze. The LPDM analysis indicates that regional transport is a main source contributing to secondary low-volatility production. The high-potential source regions of secondary low-volatility production are mainly located in areas to the northeast of the city. High aerosol pollution was mainly contributed by regional transport associated with northeastern air masses. Such regional transport on average accounts for 46% of total NR-PM1 with sulfate and aged low-volatility organics being the largest fractions (>65%). (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：161 / 166
页数：6
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