Air quality changes in cities during the COVID-19 lockdown: A critical review

MG Adam, PTM Tran, R Balasubramanian - Atmospheric Research, 2021 - Elsevier
In response to the rapid spread of coronavirus disease-2019 (COVID-19) within and across
countries and the need to protect public health, governments worldwide introduced …

Global ammonia emissions from synthetic nitrogen fertilizer applications in agricultural systems: Empirical and process‐based estimates and uncertainty

R Xu, H Tian, S Pan, SA Prior, Y Feng… - Global change …, 2019 - Wiley Online Library
Excessive ammonia (NH3) emitted from nitrogen (N) fertilizer applications in global
croplands plays an important role in atmospheric aerosol production, resulting in visibility …

Atmospheric ammonia and its impacts on regional air quality over the megacity of Shanghai, China

S Wang, J Nan, C Shi, Q Fu, S Gao, D Wang, H Cui… - Scientific reports, 2015 - nature.com
Atmospheric ammonia (NH3) has great environmental implications due to its important role
in ecosystem and global nitrogen cycle, as well as contribution to secondary particle …

Secondary inorganic aerosols formation during haze episodes at an urban site in Beijing, China

R Zhang, X Sun, A Shi, Y Huang, J Yan, T Nie… - Atmospheric …, 2018 - Elsevier
Severe PM 2.5 pollution was observed frequently in Beijing. We conducted highly time-
resolved measurements of inorganic ions associated with PM 2.5 at an urban site in Beijing …

Cellulose nanocrystal/poly (ethylene glycol) composite as an iridescent coating on polymer substrates: structure-color and interface adhesion

M Gu, C Jiang, D Liu, N Prempeh… - ACS applied materials & …, 2016 - ACS Publications
The broad utility as an environmentally friendly and colorful coating of cellulose nanocrystal
(CNC) was limited by its instability of coloration, brittleness, and lack of adhesion to a …

The severe Delhi SMOG of 2016: A case of delayed crop residue burning, coincident firecracker emissions, and atypical meteorology

R Sawlani, R Agnihotri, C Sharma, PK Patra… - Atmospheric Pollution …, 2019 - Elsevier
Rising levels of air-borne suspended particulate matter with aerodynamic diameter≤ 2.5 μm
(PM 2.5) in the Asian mega cities is a serious cause of concern. A severe SMOG (smoke+ …

Dominant contribution of combustion-related ammonium during haze pollution in Beijing

L Wu, P Wang, Q Zhang, H Ren, Z Shi, W Hu, J Chen… - Science Bulletin, 2024 - Elsevier
Abstract Aerosol ammonium (NH 4+), mainly produced from the reactions of ammonia (NH
3) with acids in the atmosphere, has significant impacts on air pollution, radiative forcing …

Role of ambient ammonia in particulate ammonium formation at a rural site in the North China Plain

Z Meng, X Xu, W Lin, B Ge, Y Xie, B Song… - Atmospheric …, 2018 - acp.copernicus.org
The real-time measurements of NH 3 and trace gases were conducted, in conjunction with
semi-continuous measurements of water-soluble ions in PM 2.5 at a rural site in the North …

Ammonia and PM2.5 Air Pollution in Paris during the 2020 COVID Lockdown

C Viatte, JE Petit, S Yamanouchi, M Van Damme… - Atmosphere, 2021 - mdpi.com
During the COVID-19 pandemic, the lockdown reduced anthropogenic emissions of NO2 in
Paris. NO2 concentrations recorded in 2020 were the lowest they have been in the past 5 …

Temporal variations of the abundance and optical properties of water soluble Humic-Like Substances (HULIS) in PM2. 5 at Guangzhou, China

X Fan, J Song - Atmospheric Research, 2016 - Elsevier
Abstract Humic-Like Substances (HULIS) are important macromolecular compounds that are
present in PM 2.5 and play significant roles in the atmospheric environment. In this study, 48 …