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CLC number: TV5

On-line Access: 2018-01-12

Received: 2017-05-24

Revision Accepted: 2017-12-10

Crosschecked: 2017-12-15

Cited: 1

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Citations:  Bibtex RefMan EndNote GB/T7714


Ling-hong Chen


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Journal of Zhejiang University SCIENCE A 2018 Vol.19 No.1 P.45-59


Effect of relative humidity on non-refractory submicron aerosol evolution during summertime in Hangzhou, China

Author(s):  Ling-hong Chen, Biao Lv, Xian-jue Zheng, Kang-wei Li, Jian-dong Shen, Kai-ji Bao, Xue-cheng Wu, Cheng-hang Zheng, Fang Ying, Xiang Gao, Ke-fa Cen

Affiliation(s):  State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   chenlh@zju.edu.cn

Key Words:  Relative humidity (RH), Aerosol composition, Size distribution, Wet removal, Aqueous-phase

Ling-hong Chen, Biao Lv, Xian-jue Zheng, Kang-wei Li, Jian-dong Shen, Kai-ji Bao, Xue-cheng Wu, Cheng-hang Zheng, Fang Ying, Xiang Gao, Ke-fa Cen. Effect of relative humidity on non-refractory submicron aerosol evolution during summertime in Hangzhou, China[J]. Journal of Zhejiang University Science A, 2018, 19(1): 45-59.

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author="Ling-hong Chen, Biao Lv, Xian-jue Zheng, Kang-wei Li, Jian-dong Shen, Kai-ji Bao, Xue-cheng Wu, Cheng-hang Zheng, Fang Ying, Xiang Gao, Ke-fa Cen",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Effect of relative humidity on non-refractory submicron aerosol evolution during summertime in Hangzhou, China
%A Ling-hong Chen
%A Biao Lv
%A Xian-jue Zheng
%A Kang-wei Li
%A Jian-dong Shen
%A Kai-ji Bao
%A Xue-cheng Wu
%A Cheng-hang Zheng
%A Fang Ying
%A Xiang Gao
%A Ke-fa Cen
%J Journal of Zhejiang University SCIENCE A
%V 19
%N 1
%P 45-59
%@ 1673-565X
%D 2018
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1700567

T1 - Effect of relative humidity on non-refractory submicron aerosol evolution during summertime in Hangzhou, China
A1 - Ling-hong Chen
A1 - Biao Lv
A1 - Xian-jue Zheng
A1 - Kang-wei Li
A1 - Jian-dong Shen
A1 - Kai-ji Bao
A1 - Xue-cheng Wu
A1 - Cheng-hang Zheng
A1 - Fang Ying
A1 - Xiang Gao
A1 - Ke-fa Cen
J0 - Journal of Zhejiang University Science A
VL - 19
IS - 1
SP - 45
EP - 59
%@ 1673-565X
Y1 - 2018
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1700567

relative humidity (RH) has a significant and complex effect on aerosols because of the aqueous phase process and gas-particle partition. The mass concentration and size distribution of organic aerosols, sulfate, nitrate, ammonium, and chloride were measured using high-resolution time-of-flight aerosol mass spectrometry (HR-ToF-AMS). These measurements were recorded from Aug. 5 to Sept. 23, 2016 in Binjiang District, Hangzhou, China, during which period more than 78% of the readings showed an RH over 60%, while the average temperature was 26 °C. Correlation analysis was applied to inorganic aerosol measurements while positive matrix factorization (PMF) was applied for source apportionment of organic aerosols (OA). The pattern of fixation of ammonium in aerosols changed as the RH increased, suggesting that RH enhances nitrate participation in particles, while sulfate is scavenged by droplets. All species of non-refractory submicron particles (NR-PM1) showed an increase in their peak size as the RH increased. Primary OA (POA) continuously accumulated as the RH increased. When RH<60%, oxygenated OA (OOA) increased with increasing RH because of oxidation; semi-volatile OOA (SV-OOA) had a higher mass concentration during the daytime than at nighttime, indicating that the aqueous phase process and photochemistry synergistically affect the formation of oxygenated SV-OOA. When RH>60%, there was a relatively slow decrease in OOA, dominated by the wet removal effect rather than oxidation. The degree of oxidation of OA decreased as RH increased; this can be explained by most of the OOA with higher hygroscopicity being removed as droplets.


方法:1. 利用高分辨飞行时间气溶胶质谱仪采集的外场数据分析各组分时序浓度和粒径分布,并通过正矩阵因数分解模型进行来源解析.2. 通过研究各种物质和解析的因子随湿度的变化,探讨湿度对气溶胶演化的影响.3. 通过相关性处理探究铵在气溶胶中的存在形式.


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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