Environmental investigation of pollutants in coal mine operation and waste dump area monitored in Ordos Region, China

Li, Ang; Chen, Changkun; Chen, Jie; Lei, Peng

doi:10.1039/d0ra10586d

Cited by 10 publications

(7 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the highest levels of PM 2.5 were observed in the city of Rio Grande, which is a city with economic activity linked to various industrial activities, being even recognized on a national scale for its industrial complex. These results are in agreement with what is observed in the literature, since the activity of mining and power generation with coal is recognized by the emission of high levels of SO 2 and nitrogen oxides (Li et al, 2021), while the presence of large industrial complexes is directly related to high levels of PM 2.5 in local air (Hsu et al, 2017;Jeon et al, 2010). In fact, the study by Gutierrez et al (2020) carried out in the city of Rio Grande highlighted the presence of high levels of PM 2.5 in the air in this region, with 50% of the samples collected exceeding quality criteria established by the WHO (2006) andCONAMA (2018).…”

Section: Impacts Of Economic Activities and Seasons On Air Pollutants...supporting

confidence: 93%

Weekend effect on air pollutant levels in southernmost cities of Brazil with different economic activities

Ceglinski

Tavella

Bonifácio

et al. 2022

Environ Monit Assess

View full text Add to dashboard Cite

In view of the current premises of the need to investigate air pollution in small- and medium-sized cities, combined with concerns regarding the weekly behavior of air pollutants, this study aimed to investigate the weekly pattern of air pollution (O 3 , NO 2 , SO 2 , PM 2.5 ) and the weekend effect in 4 Brazilian cities with different main economic activities. Our main findings include (1) positive weekend effect for all the assessed air pollutants in the four cities; therefore, in the southernmost region of Brazil, there was an increase in the concentration of air pollutants during weekends when compared to weekdays; (2) the highest levels of NO 2 and SO 2 were observed in the city characterized by the economic activity revolving around coal mining and generation of electricity through the burning of this mineraloid in a coal-fired power plant, while the highest levels of PM 2.5 were in the city with economic activity linked to industries, due to its recognized industrial complex; and (3) the seasonal evaluation of the weekend effect showed different behaviors for the air pollutants in each location, which is related to the set of meteorological conditions, economic activities, and population mobility in each location. In conclusion, our results demonstrate the aspects of pollution between cities and highlight that the comprehensive understanding of the weekend effect and its intricacies allows the responsible personal and government authorities to gain deep insights into the true effectiveness of future control strategies and the development of possible action plans. Supplementary Information The online version contains supplementary material available at 10.1007/s10661-022-10518-6.

show abstract

Section: Impacts Of Economic Activities and Seasons On Air Pollutants...supporting

confidence: 93%

Weekend effect on air pollutant levels in southernmost cities of Brazil with different economic activities

Ceglinski

Tavella

Bonifácio

et al. 2022

Environ Monit Assess

View full text Add to dashboard Cite

show abstract

“…CO and NO 2 also increased with the increase in BC's mass concentration. CO and NO 2 mainly come from the incomplete combustion of carbonaceous materials and traffic source emissions, respectively (Li et al, 2021; Shen, Wang, Kong, Zhang, et al, 2021). The two emissions have good homology with BC's, so CO and NO 2 also increase when BC increases.…”

Section: Resultsmentioning

confidence: 99%

“…The annual average mass concentrations of SO 2 , NO 2 , and PM 2.5 were 14, 15, and 21 μg m −3 , respectively (http://www.eq.gov.cn/eqxxgk/gkml/qq_etkq_5241/qq_etkq_0402/202307/t20230705_3446929.html). However, biomass straw burning, open‐pit coal mining, and industrial sources in the Ordos region contribute significantly to PM 2.5 and carbonaceous components (Cheng et al, 2007; Khuzestani et al, 2018; Li et al, 2021; Zhang et al, 2010). The Alxa League–Yinchuan City and Etuokeqian Banner areas have the second most significant contribution to PM 2.5 and contribute 12–18 μg m −3 to PM 2.5 .…”

Section: Resultsmentioning

confidence: 99%

Temporal evolution and source apportionment of BC aerosols during autumn in the grassland of Ordos, China

Li,

Zhang,

Duan

et al. 2024

Meteorological Applications

View full text Add to dashboard Cite

Meteorological conditions and source emissions in grassland areas are quite different from those in urban areas, which significantly impacts the spatiotemporal characteristics of black carbon (BC). To obtain the characteristics of BC in the typical grassland environment in China, continuous observations of BC were carried out in Etuoke Banner, a typical grassland environment in Ordos, from September 8 to December 1, 2022. BC in Etuoke Banner in autumn is 22.4–4667.5 ng m−3, and the average concentration is 456.6 ng m−3, accounting for 2.20% of the mass fraction of PM2.5. BCliquid (BC generated from the combustion of liquid fuels) is the main component of BC (accounting for 79.2%); the average concentration is 361.7 ng m−3. The diurnal variations of BC, BCliquid, and BCsolid (BC generated from the combustion of solid fuels) are bimodal, with peaks at 08:00 and 18:00. The first peak is mainly related to traffic sources, cooking sources, and incomplete combustion of carbon‐containing substances; the second peak may be caused by emissions from residential cooking sources under the influence of meteorological conditions unfavorable to diffusion. The diurnal variation of absorption Ångström exponent (AAE) is unimodal, with the peak at 14:00. With the increase in BC mass concentration, AAE and visibility gradually decreased, wind speed first decreased and then increased, P and RH gradually increased, and the contribution of biomass combustion sources to BC decreased. In contrast, the contribution of traffic sources to BC increased. The evolution characteristics of atmospheric pollutants differed with the increase in BC concentration. The potential sources and affecting areas of BC and PM2.5 are mainly concentrated around Etuoke Banner and can affect the North China Plain after 48 h of transmission.

show abstract

“…However, of these it is interesting to note that the highest levels of NO 2 and SO 2 were observed in the city of Candiota, and the highest levels of PM 2;5 and PM 10 were observed in the city of Rio Grande. The levels of these pollutants in Candiota can be explained both by the massive coal mining activity and also by the presence of a thermoelectric plant that uses this same coal as fuel in its operation, which are activities recognized by the high levels of SO 2 and nitrous oxide emissions ( Li et al, 2021 ). In addition, in a recent study by the Brazilian Institute of Energy and Environment (( IEMA, from Portuguese, Instituto de Energia e Meio Ambiente 2022 )), it was pointed out that the coal-fired power plant present in this region is the one that emits the most pollutants in Brazil.…”

Section: Discussionmentioning

confidence: 99%

Weekend effect of air pollutants in small and medium-sized cities: The role of policies stringency to COVID-19 containment

Tavella

Moraes

Aick

et al. 2023

Atmospheric Pollution Research

View full text Add to dashboard Cite

Environmental investigation of pollutants in coal mine operation and waste dump area monitored in Ordos Region, China

Abstract: The increasingly severe emissions of greenhouse and poisonous gases from environmentally unsafe stockpiled coal mine waste dumps have urged people from the academia as well as the industry to focus on environmental impact assessment.

Cited by 10 publications

References 49 publications

Weekend effect on air pollutant levels in southernmost cities of Brazil with different economic activities

Weekend effect on air pollutant levels in southernmost cities of Brazil with different economic activities

Temporal evolution and source apportionment of BC aerosols during autumn in the grassland of Ordos, China

Weekend effect of air pollutants in small and medium-sized cities: The role of policies stringency to COVID-19 containment

Contact Info

Product

Resources

About