Research on characteristics and influencing factors of road dust emission in a southern city in China.
Environ Monit Assess
; 196(10): 890, 2024 Sep 04.
Article
de En
| MEDLINE
| ID: mdl-39230831
ABSTRACT
One of the primary causes of urban atmospheric particulate matter, which is harmful to human health in addition to affecting air quality and atmospheric visibility, is road dust. This study used online monitoring equipment to examine the characteristics of road dust emissions, the effects of temperature, humidity, and wind speed on road dust, as well as the correlation between road and high-space particulate matter concentrations. A section of a real road in Jinhua City, South China, was chosen for the study. The findings demonstrate that the concentration of road dust particles has a very clear bimodal single-valley distribution throughout the day, peaking between 800 and 1100 and 1900 and 2100 and troughing between 1400 and 1600. Throughout the year, there is a noticeable seasonal change in the concentration of road dust particles, with the highest concentration in the winter and the lowest in the summer. Simultaneously, it has been discovered that temperature and wind speed have the most effects on particle concentration. The concentration of road dust particles reduces with increasing temperature and wind speed. The particle concentrations of road particles and those from urban environmental monitoring stations have a strong correlation, although the trend in the former is not entirely consistent, and the changes in the former occur approximately 1 h after the changes in the latter.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Emissions des véhicules
/
Surveillance de l'environnement
/
Villes
/
Polluants atmosphériques
/
Pollution de l'air
/
Poussière
/
Matière particulaire
Pays/Région comme sujet:
Asia
Langue:
En
Journal:
Environ Monit Assess
/
Environ. monit. assess
/
Environmental monitoring and assessment
Sujet du journal:
SAUDE AMBIENTAL
Année:
2024
Type de document:
Article
Pays d'affiliation:
Chine
Pays de publication:
Pays-Bas