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

doi:10.1021/acs.estlett.2c00527

	Quantitative Decomposition of Influencing Factors to Aerosol pH Variation over the Coasts of the South China Sea, East China Sea, and Bohai Sea
	Wang, Guochen 3; Tao, Ye 2; Chen, Jia 3; Liu, Chengfeng 3; Qin, Xiaofei 3; Li, Hao 3; Yun, Long 4; Zhang, Mingdi 4; Zheng, Haitao 5; Gui, Huaqiao 5
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
	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
DOI	10.1021/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.
资助项目	National Natural Science Foundation of China[42175119] ; National Key RD Plan programs[2018YFC0213105]
WOS关键词	FINE-PARTICLE PH ; THERMODYNAMIC MODEL ; PARTICULATE MATTER ; PM2.5 ACIDITY ; WATER-CONTENT ; NITRATE ; SULFATE ; AMMONIA ; ATMOSPHERE ; DEPOSITION
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000856507200001
资助机构	National Natural Science Foundation of China ; National Key RD Plan programs
内容类型	期刊论文
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.Shanghai Environm Monitoring Ctr, Shanghai 200030, Peoples R China 2.York Univ, Dept Chem, Toronto, ON, Canada 3.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Preve, Shanghai 200433, Peoples R China 4.Shenzhen Environm Monitoring Ctr, Shenzhen 518049, Guangdong, Peoples R China 5.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 6.Inst Ecochongming, Shanghai 202162, Peoples R China 7.Fudan Univ, IRDR ICoE Risk Interconnect & Governance Weather C, Shanghai 200433, 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).