PMID- 31854544
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191219
LR  - 20200108
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 40
IP  - 11
DP  - 2019 Nov 8
TI  - [First Long-Term Study of Atmospheric New Particle Formation in the Suburb of 
      Shanghai from 2015 to 2017].
PG  - 4791-4800
LID - 10.13227/j.hjkx.201903090 [doi]
AB  - In this study, long-term continuous monitoring of atmospheric new particle 
      formation was conducted from 2015 to 2017 in the Shanghai suburbs using a 
      scanning mobility particle sizer (SMPS). Combined with meteorological parameters, 
      gaseous pollutants, and PM(2.5) chemical composition data, the characterization 
      of new particle formation was analyzed. The results of data analysis showed there 
      were 172 new particle formation (NPF) days in the Shanghai suburbs, accounting 
      for 18.3% of the total effective days (942 d). Typical new particle formation 
      days (Event) and new particle growth-shrinkage (Shrinkage) days were 150 d and 32 
      d, respectively. The frequency of NPF occurrence was the highest in spring and 
      summer, followed by autumn and winter. Compared with non-new particle formation 
      (Non-NPF) days, Event and Shrinkage days had higher temperature and wind speed, 
      lower humidity, less rainfall, and stronger solar radiation. The ratio of Event 
      days was the highest when the prevailing wind was southerly, southwesterly, or 
      westerly, and when the air masses were mainly from the vegetation cover and 
      agricultural planting areas in the Taihu Lake Basin. The prevailing wind 
      directions for Non-NPF and Shrinkage days were northeasterly and easterly to 
      southeasterly. On the Event days, SO(2) and O(3) were higher than that on the 
      Non-NPF days, indicating gaseous sulfuric acid and photochemical reactions were 
      key contributors to new particle formation. Higher PM(10) concentration was 
      detected on the Event days than on the Non-NPF days, which may be attributed to 
      the photocatalytic reaction. All the pollutant concentrations were the lowest on 
      Shrinkage days, except that of O(3). The average concentrations of inorganic 
      components of PM(2.5), such as NH(4)(+), SO(4)(2-), and NO(3)(-) were higher on 
      Event than on Non-NPF days in fall, whereas the opposite results were observed in 
      other seasons. The average concentration of organic carbon on Event days was 
      higher than that on Non-NPF days in each season. The concentrations of PM(2.5) 
      components on Shrinkage days were the lowest. However, the ratio of organic 
      carbon on Shrinkage days was higher than that on Non-NPF days in spring, summer, 
      and winter. The higher ratio of organic carbon on the NPF days than on the 
      Non-NPF days suggested an important role of organic matter in the formation and 
      growth of new particles in the suburbs of Shanghai.
FAU - Huo, Jun-Tao
AU  - Huo JT
AD  - Shanghai Environmental Monitoring Center, Shanghai 200235, China.
FAU - Wang, Xin-Ning
AU  - Wang XN
AD  - Shanghai Environmental Monitoring Center, Shanghai 200235, China.
FAU - Duan, Yu-Sen
AU  - Duan YS
AD  - Shanghai Environmental Monitoring Center, Shanghai 200235, China.
FAU - Fu, Qing-Yan
AU  - Fu QY
AD  - Shanghai Environmental Monitoring Center, Shanghai 200235, China.
FAU - Chen, Bing-Yi
AU  - Chen BY
AD  - Shanghai Environmental Monitoring Center, Shanghai 200235, China.
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Huan Jing Ke Xue
JT  - Huan jing ke xue= Huanjing kexue
JID - 8405344
SB  - IM
OTO - NOTNLM
OT  - Shanghai suburb
OT  - chemical composition
OT  - meteorological element
OT  - new particle formation(NPF)
OT  - shrinkage
EDAT- 2019/12/20 06:00
MHDA- 2019/12/20 06:01
CRDT- 2019/12/20 06:00
PHST- 2019/12/20 06:00 [entrez]
PHST- 2019/12/20 06:00 [pubmed]
PHST- 2019/12/20 06:01 [medline]
AID - 10.13227/j.hjkx.201903090 [doi]
PST - ppublish
SO  - Huan Jing Ke Xue. 2019 Nov 8;40(11):4791-4800. doi: 10.13227/j.hjkx.201903090.