The Beijing government implemented a number of clean air action plans to improve air
quality in the last 10 years, which contributed to changes in the concentration of fine …

China's lockdown to control COVID-19 brought significant declines in air pollutant
emissions, but haze was still a serious problem in North China Plain (NCP) during late …

Organic aerosol (OA) constituted a large fraction of aerosol particles during severe haze
episodes in winter in northern China, yet our understanding of its physical and chemical …

Humic-like substances (HULIS) are a mixture of high-molecular-weight, water-soluble
organic compounds that are widely distributed in atmospheric aerosol. Their sources are …

Biomass burning and dust storm have significant impacts on air pollution, aerosol properties
and potential human health. In order to investigate the influences of them on the chemical …

Severe haze pollution frequently occurred in China during winter. Mechanisms for the
formation and evolution of high PM2. 5 (particulate matter with aerodynamic diameter of 2.5 …

Nitrate is an increasingly important component of fine particulate matter (PM 2.5) in Chinese
cities. The production of nitrate is not only related to the abundance of its precursor, but also …

Regional transport is a key source of carbonaceous aerosol in many Chinese megacities
including Beijing. The sources of carbonaceous aerosol in urban areas have been studied …

The size-resolved hygroscopic properties of submicron particles were observed by a
Hygroscopicity Tandem Differential Mobility Analyzer (HTDMA) at an urban site in Beijing in …

The catalytic oxidation of SO 2 by metal ions in aerosol water may be one of the important
sources of sulfate in the atmospheric environment. In order to better understand the catalytic …