Abstract
This paper sets up monitoring points in Shizuishan City to perform characteristics and source analysis of PM2.5 in Shizuishan City, Ningxia Hui Autonomous Region according to the Technical Guide for Analyzing the Source of Atmospheric Particulate Matters (trial). The results show that the main ionic components in the air particulate matters of PM10 and PM2.5 in Shizuishan are SO42-, NO3- and Ca, thereby providing a technical basis for improving the air quality in Shizuishan City.
Highlights
The constant increase of human industrial production leads to frequent occurrence of dust-haze in urban areas
According to the statistics of national pollution source census, the industries that cause air pollution in Shizuishan City mainly include 5 categories, involving 129 large and medium-sized enterprises, accounting for 48% of the total (271), of which ferroalloy smelting and carbon products manufacturing companies account for 14% of the total
By analyzing the composition of the filter membranes of PM10 and PM2.5 at each site, this paper finds out that the smoke emitted by industrial enterprises leads to higher concentrations of Ca and sulfate in PM10 and PM2.5
Summary
The constant increase of human industrial production leads to frequent occurrence of dust-haze in urban areas. Dust-haze is stable in nature, difficult to degrade, and can be transported further by the atmosphere [1,2,3]. Atmospheric particulates such as PM2.5 and PM10 play an important role in the formation of the dust-haze [4]. Due to the excessive emissions of atmospheric pollutants from industrial production [5], the dust-haze, mainly composed of PM2.5 and PM10, has become a serious pollution problem in China's major cities, causing great harm to human health as well as social, economic and ecological environment [6,7]. It is of great significance to study the effects of pollution sources in specific cities on the atmospheric quality of urban centers so as to reveal the characteristics and source of PM10 and PM2.5
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