Results 21 to 30 of about 434,726 (351)

Machine learning coupled structure mining method visualizes the impact of multiple drivers on ambient ozone

Communications Earth & Environment, 2023
Ground-level ozone affects Earth’s climate and human health. The formation of ozone is a complex process, depending on both atmospheric chemical processes and meteorological factors.
Han Xu, Haofei Yu, Bo Xu, Zhenyu Wang, Feng Wang, Yuting Wei, Weiqing Liang, Jinxing Liu, Danni Liang, Yinchang Feng, Guoliang Shi   +10 more
doaj   +1 more source

The Impact of Anthropogenic VOC Emissions on Atmospheric Pollution: A Case Study of a Typical Industrialized Area in China

Atmosphere, 2023
Volatile organic compounds (VOCs) are the main precursors of pollution from ground ozone (O3) and PM2.5, which cause the deterioration of urban air quality.
Xin Gao, Yanan Wang, Lin Wu, Fangyuan Zheng, Naixiu Sun, Guangxun Liu, Yongji Liu, Peng Meng, Luna Sun, Boyu Jing   +9 more
doaj   +1 more source

Exploring the Sensitivity of Visibility to PM_2.5 Mass Concentration and Relative Humidity for Different Aerosol Types

Atmosphere, 2022
Fine particle (PM2.5) mass concentration and relative humidity (RH) are the primary factors influencing atmospheric visibility. There are some studies focused on the complex, nonlinear relationships among visibility, PM2.5 concentration, and RH. However,
Jiao Wang, Jianhui Wu, Baoshuang Liu, Xiaohuan Liu, Huiwang Gao, Yufen Zhang, Yinchang Feng, Suqin Han, Xiang Gong   +8 more
doaj   +1 more source

Implications for ozone control by understanding the survivor bias in observed ozone-volatile organic compounds system

npj Climate and Atmospheric Science, 2022
Tropospheric ozone (O3) affects Earth’s climate and human health. Volatile organic compounds (VOCs), major contributors to O3 formation, are of particular interest.
Zhenyu Wang, Zongbo Shi, Feng Wang, Weiqing Liang, Guoliang Shi, Weichao Wang, Da Chen, Danni Liang, Yinchang Feng, Armistead G. Russell   +9 more
doaj   +1 more source

Size Distribution of Ambient Particulate Matter and Its Constituent Chemical Species Involving Saccharides During Early Summer in a Chinese Megacity

Frontiers in Environmental Science, 2021
The ambient particulate matter (PM) pollution adversely influences the human health and natural environment. The size distribution of ambient PM determines the physiochemical and optical properties of ambient aerosol, whereas it reflects the variability ...
Jahan Zeb Khan, Jahan Zeb Khan, Long Sun, Yingze Tian, Qili Dai, Tongxin Hu, Yinchang Feng   +6 more
doaj   +1 more source

CO₂ Capture and H₂ Recovery Using a Hollow Fiber Membrane Contactor

Separations, 2023
In this study, hydrogen was recovered and purified by using a membrane contactor unit from CO2-rich gas without the use of any basic chemicals such as amines.
Cheonwoo Jeong, Sadanand Pandey, Dongcheol Lee, SangHyeon Park, Joon Hyun Baik, Joonwoo Kim   +5 more
doaj   +1 more source

Non-exhaust particulate matter emission from vehicles: A review [PDF]

E3S Web of Conferences, 2021
According to the source, particulate matter produced during vehicle driving can be divided into exhaust emission and non-exhaust emission. Exhaust emission includes exhaust pipe emission and crankcase emission, while non-exhaust emission includes brake ...
Guo Dongdong, Wei Hongyuan, Guo Yong, Wang Chuanqi, Yin Zenghui   +4 more
doaj   +1 more source

Size-resolved particulate matter composition in Beijing during pollution and dust events [PDF]

, 2006
Each spring, Beijing, China, experiences dust storms which cause high particulate matter concentrations. Beijing also has many anthropogenic sources of particulate matter including the large Capitol Steel Company. On the basis of measured size segregated,
Cass, Glen R., Dillner, Ann M., Schauer, James J., Zeng, Limin, Zhang, Yuanhang   +4 more
core   +2 more sources

Aerosol pH and its driving factors in Beijing [PDF]

Atmospheric Chemistry and Physics, 2019
Aerosol acidity plays a key role in secondary aerosol formation. The high-temporal-resolution PM2.5 pH and size-resolved aerosol pH in Beijing were calculated with ISORROPIA II.
J. Ding, P. Zhao, J. Su, Q. Dong, Q. Dong, X. Du, X. Du, Y. Zhang   +7 more
doaj   +1 more source

Technical note: Influence of different averaging metrics and temporal resolutions on the aerosol pH calculated by thermodynamic modeling [PDF]

Atmospheric Chemistry and Physics
Aerosol pH is commonly used to characterize the acidity of aqueous aerosols and is of significant scientific interest due to its close relationship with atmospheric processes.
H. Wang, H. Wang, X. Tian, X. Tian, W. Zhao, W. Zhao, J. Li, J. Li, H. Yu, Y. Feng, Y. Feng, S. Song, S. Song   +12 more
doaj   +1 more source