Urban air pollution represents one of the greatest environmental challenges facing mankind
in the 21st century. 1, 2 Noticeably, many develo** countries, such as China and India …

As the world's second largest economy, China has experienced severe haze pollution, with
fine particulate matter (PM) recently reaching unprecedentedly high levels across many …

Density (ρ) is one of the most important physical properties of aerosol particles. Owing to the
complex nature of aerosols and the challenges of measuring them, effective density (ρ e) is …

Direct in-situ measurements of aerosol mixing state, optical properties, and chemical
composition were performed in summertime of 2014 at Nan**g, China. Aerosols were …

Size-resolved effective density of 50–400 nm urban particles was determined by a TDMA–
APM system in Shanghai during wintertime. The average effective density ranged from 1.36 …

The variations in physicochemical properties of airborne particles collected during a typical
transition from haze to dust were investigated using single particle analysis with …

In this study, we characterized personal exposure to fine particulate matter (PM 2.5), black
carbon (BC), and nicotine in pregnant women in Hidalgo County, where the hospitalization …

Severe wintertime haze events with exceedingly high levels of aerosols have occurred
frequently in China in recent years, impacting human health, weather, and the climate. A …

Particle density is an important physical property of atmospheric particles. The information
on high time-resolution size-resolved particle density is essential for understanding the …

The effective density is an essential physical property of atmospheric aerosols. The study of
the effective density helps characterize the aerodynamic behavior of aerosol particles …