Hourly variations in criteria air pollutants (PM2.5, PM10, SO2, NO2, CO, and O-3), chemical components, and sources of PM2.5 before, during, and after the severe regional air PE were characterized at three sites, namely Neijiang (NJ), Zigong (ZG), and Yibin (YB). The results ...
Criteria pollutants PM2.5 Provincial capital cities China 1. Introduction Air pollution in China receives increasing attention by the general public as well as scientific researchers and policy makers due to frequent occurrences of severe regional and inter-regional air pollution events. Air pollution dat...
The monitoring sites of air pollutants have been stable in 366 cities in China since January 2015. Therefore, the purpose of this study is to understand the temporal and spatial variations of PM2.5, PM10, SO2, NO2, CO, and O3in 366 cities from 2015 to 2017. We analyzed the variations o...
but significantly increased in northern to western China (Fig.3and Supplementary Fig.3). In particular, the concentrations of PM2.5and PM10in the majority of provinces were over the China guidelines II (Fig.3). During 2013–2018, the mean monthly concentrations of six air pollutants in high...
By setting strict green criteria for contracts, governments can improve their own carbon footprint through the use of greener products and services while encouraging other actors to improve their own sustainable consumption and production practices. Governments may have to overcome negative perceptio...
After such measures, all the indicators of flue gas discharge can meet the air pollution emission standards of newly built coal-fired boilers under the "Emission Standard of Air Pollutants for Coal-fired Power Plants" (GB13223-2011). In 2021, 1 boiler has completed flue gas ultra-low ...
Size-segregated particle samples were collected using a Berner 5-stage impactor (stages 1–5: 0.05–0.14–0.42–1.2–3.5–10 μm aerodynamic diameter). The means for all 169 days and for different categories of days were used for a characterization. The sorting criteria were (a) the distincti...
To study the distribution characteristics of major air pollutants, the air quality index (AQI) and mass concentrations of six criteria air pollutants, including PM2.5, PM10, SO2, NO2, CO and O3, from 2014 to 2018 were used. Furthermore, by employing the Hybrid Single-Particle Lagrangian ...
Moreover, an increase in air pollutants per se has been found to be associated with smaller total cerebral brain volume and a higher risk of covert brain infarct9. Importantly, several studies have found an association between unclean cooking fuel and cognitive impairment. For example, in one ...
The selection of reference imagery was based on the following criteria: (1) there were visibly notable fire scars (burned areas) in the MCD64A1 product in the region; (2) there were explicitly visible differences between the pre-fire (i.e., shown by green) and post-fire true colour imag...