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Quantitative Decomposition of Influencing Factors to Aerosol pH Variation over the Coasts of the South China Sea, East China Sea, and Bohai Sea

文献类型：期刊论文

作者Wang, Guochen4; Tao, Ye5; Chen, Jia4; Liu, Chengfeng4; Qin, Xiaofei4; Li, Hao4; Yun, Long6; Zhang, Mingdi6; Zheng, Haitao7; Gui, Huaqiao7
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
出版日期2022-09-15
关键词aerosol acidity driving factors NHx phase-partitioning equilibrium aerosol pH variation nonvolatile cations eastern coastal China
ISSN号2328-8930
DOI10.1021/acs.estlett.2c00527
通讯作者Huang, Kan(huangkan@fudan.edu.cn)
英文摘要Aerosol acidity acts as a crucial parameter in regulating atmospheric chemistry; however, quantifying its major influencing factors is rare, especially at coastal regions which represent complex interfaces from both terrestrial and marine emissions and land breeze-sea breeze interactions. Three field campaigns conducted at coastal sites of the South China Sea, East China Sea, and Bohai Sea all revealed high aerosol acidity. By using a decomposition method based on the NHx phase-partitioning equilibrium, NH3 and relative humidity (RH) were identified as the two most important driving factors to hourly aerosol pH variation. In addition, the contributions of driving factors to the diel aerosol pH variation were first revealed. RH and temperature tended to increase (decrease) the aerosol pH during nighttime (daytime), while NH3 exhibited a reverse diurnal pattern. The diel cycles of aerosol liquid water and gas-particle partitioning of ammonium were responsible for the behavior of the driving factors of diel aerosol pH variation. Moreover, this study also highlighted that nonvolatile cations accounted for 8%-17% of the hourly aerosol pH variation, demonstrating that the role of sea salts in regulating coastal aerosol acidity cannot be ignored.
WOS关键词FINE-PARTICLE PH ; THERMODYNAMIC MODEL ; PARTICULATE MATTER ; PM2.5 ACIDITY ; WATER-CONTENT ; NITRATE ; SULFATE ; AMMONIA ; ATMOSPHERE ; DEPOSITION
资助项目National Natural Science Foundation of China[42175119] ; National Key RD Plan programs[2018YFC0213105]
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000856507200001
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; National Key RD Plan programs
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/128986]  
专题中国科学院合肥物质科学研究院
通讯作者Huang, Kan
作者单位1.Fudan Univ, IRDR ICoE Risk Interconnect & Governance Weather C, Shanghai 200433, Peoples R China
2.Shanghai Environm Monitoring Ctr, Shanghai 200030, Peoples R China
3.Inst Ecochongming, Shanghai 202162, Peoples R China
4.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Preve, Shanghai 200433, Peoples R China
5.York Univ, Dept Chem, Toronto, ON, Canada
6.Shenzhen Environm Monitoring Ctr, Shenzhen 518049, Guangdong, Peoples R China
7.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Guochen,Tao, Ye,Chen, Jia,et al. Quantitative Decomposition of Influencing Factors to Aerosol pH Variation over the Coasts of the South China Sea, East China Sea, and Bohai Sea[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2022.
APA Wang, Guochen.,Tao, Ye.,Chen, Jia.,Liu, Chengfeng.,Qin, Xiaofei.,...&Huang, Kan.(2022).Quantitative Decomposition of Influencing Factors to Aerosol pH Variation over the Coasts of the South China Sea, East China Sea, and Bohai Sea.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS.
MLA Wang, Guochen,et al."Quantitative Decomposition of Influencing Factors to Aerosol pH Variation over the Coasts of the South China Sea, East China Sea, and Bohai Sea".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS (2022).

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来源：合肥物质科学研究院

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