PMID- 35971689
OWN - NLM
STAT- MEDLINE
DCOM- 20220817
LR  - 20220817
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 43
IP  - 8
DP  - 2022 Aug 8
TI  - [Observation Analyses of Aerosol Size Distribution Properties from February to 
      March, 2019 in Tianjin Urban Area].
PG  - 3903-3912
LID - 10.13227/j.hjkx.202112095 [doi]
AB  - The aerosol size distribution is an important physical parameter reflecting the 
      source, formation process, and pollution characteristics of aerosol particles. In 
      order to study the properties of aerosol number concentration and size 
      distributions in the Tianjin urban area,the aerosol number concentration and size 
      distributions ranging from 10-600 nm were detected using a scanning mobility 
      particle sizer (SMPS) during February and March, 2019. The results showed that in 
      the Tianjin urban area, the aerosol number concentration,surface area 
      concentration. and volume concentration in the size range of 10-600 nm were 
      22188.22 cm(-3), 1581.08 mum(2).cm(-3), and 70.76 mum(3).cm(-3),respectively, in 
      late winter and early spring. The aerosol number concentration,surface area 
      concentration, and volume concentration spectrum were all unimodally 
      distributed,and the peak value sizes were 109.40, 269.00, and 429.40 nm. The 
      number concentrations of the nucleation mode (10-20 nm),Aitken mode (20-100 nm), 
      and accumulation mode (100-600 nm) aerosols accounted for 1.40%, 52.44%, and 
      46.16% of the total number concentration. The diurnal variation in aerosol number 
      concentration showed three peaks (06:00-08:00, 12:00-14:00, and 18:00-20:00) on 
      work days and two peaks (07:00-08:00 and 19:00-21:00) on weekends. The peaks 
      appeared 1-2 hours later on weekends,and the increment of aerosol number 
      concentration was attributed to vehicle exhaust emissions. Meteorological factors 
      had a significant influence on the aerosol size distribution in Tianjin; aerosol 
      number concentration values were high in east and southwest wind. On 
      non-precipitation days,the aerosol number size distribution moved to larger size 
      ranges with the increment of relative humidity (RH); as the RH increased from 
      <20% to 50%-60%,the size peak increased from 50 nm to 131 nm. The precipitation 
      removed 100-200 nm aerosol particles discernibly,which resulted in the size peak 
      decreasing to 98 nm.
FAU - Hao, Jian
AU  - Hao J
AD  - Tianjin Institute of Meteorological Science, Tianjin 300074, China.
AD  - Tianjin Key Laboratory for Oceanic Meteorology, Tianjin 300074, China.
FAU - Cai, Zi-Ying
AU  - Cai ZY
AD  - Tianjin Environmental Meteorological Center, Tianjin 300074, China.
AD  - CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research, 
      Tianjin 300074, China.
FAU - Liu, Jing-le
AU  - Liu JL
AD  - Tianjin Meteorological Observation Center, Tianjin 300074, China.
FAU - Wang, Xiao-Jia
AU  - Wang XJ
AD  - Tianjin Environmental Meteorological Center, Tianjin 300074, China.
AD  - CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research, 
      Tianjin 300074, China.
FAU - Yao, Qing
AU  - Yao Q
AD  - Tianjin Environmental Meteorological Center, Tianjin 300074, China.
AD  - CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research, 
      Tianjin 300074, China.
LA  - chi
PT  - Journal Article
PL  - China
TA  - Huan Jing Ke Xue
JT  - Huan jing ke xue= Huanjing kexue
JID - 8405344
RN  - 0 (Aerosols)
RN  - 0 (Air Pollutants)
RN  - 0 (Particulate Matter)
RN  - 0 (Vehicle Emissions)
SB  - IM
MH  - Aerosols/analysis
MH  - *Air Pollutants/analysis
MH  - Environmental Monitoring/methods
MH  - Particle Size
MH  - Particulate Matter/analysis
MH  - Vehicle Emissions/analysis
OTO - NOTNLM
OT  - Tianjin urban area
OT  - atmospheric aerosol
OT  - diurnal variation
OT  - number concentration
OT  - spectrum distribution
EDAT- 2022/08/17 06:00
MHDA- 2022/08/18 06:00
CRDT- 2022/08/16 03:33
PHST- 2022/08/16 03:33 [entrez]
PHST- 2022/08/17 06:00 [pubmed]
PHST- 2022/08/18 06:00 [medline]
AID - 10.13227/j.hjkx.202112095 [doi]
PST - ppublish
SO  - Huan Jing Ke Xue. 2022 Aug 8;43(8):3903-3912. doi: 10.13227/j.hjkx.202112095.