On-road emission measurements of reactive nitrogen compounds from heavy-duty diesel trucks in China

He, Liqiang; Zhang, Shaojun; Hu, Jingnan; Li, Zhenhua; Zheng, Xuan; Cao, Yihuan; Xu, Guangyi; Yan, Min; Wu, Ye

doi:10.1016/j.envpol.2020.114280

Cited by 115 publications

(85 citation statements)

References 23 publications

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“…One recent research has demonstrated that traffic emissions from heavy-duty diesel trucks are major sources of NO (He et al 2020). During the partial lockdown, vehicle traffic considerably decreased in all analyzed areas, positively affecting the air quality.…”

Section: Resultsmentioning

confidence: 94%

COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil

Nakada

Urban

2020

Science of The Total Environment

571

460

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In early March 2020, the World Health Organization declared the COVID-19 as a pandemic, and in late March 2020 partial lockdown was ordered by the São Paulo state government. The aim of this study was to assess impacts on air quality in São Paulo-Brazil, during the partial lockdown implemented to provide social distancing required due to the COVID-19 pandemic. We have analyzed data from four air quality stations in São Paulo, Brazil to assess air pollutant concentration variations during the partial lockdown. Data were compared to the five-year monthly mean and to the four-week before the partial lockdown. Overall, drastic reductions on NO (up to −77.3%), NO 2 (up to −54.3%), and CO (up to −64.8%) concentrations were observed in the urban area during partial lockdown compared to the five-year monthly mean. By contrast, an increase of approximately 30% in ozone concentrations was observed in urban areas highly influenced by vehicle traffic, probably related to nitrogen monoxide decreases. Although the partial lockdown has contributed to a positive impact on air quality, it is important to take into account the negative impacts on social aspects, considering the deaths caused by COVID-19 and also the dramatic economic effects.

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Section: Resultsmentioning

confidence: 94%

COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil

Nakada

Urban

2020

Science of The Total Environment

571

460

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“…Since the DPCM of 9 March 2020, a drastic decrease in the hourly concentration of NO 2 was observed. Nitrogen dioxide in the atmosphere is a highly reactive pollutant emitted from burning fossil fuels (diesel, gasoline, and coal) [ 25 , 26 ]. This pollutant is considered a good indicator of air pollution in urban areas, as its concentration is heavily influenced by transport and mobility of citizens.…”

Section: Resultsmentioning

confidence: 99%

Impact on Air Quality of the COVID-19 Lockdown in the Urban Area of Palermo (Italy)

Vultaggio

Varrica²,

Alaimo³

2020

IJERPH

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At the end of 2019, the first cases of coronavirus disease (COVID-19) were reported in Wuhan, China. Thereafter, the number of infected people increased rapidly, and the outbreak turned into a national crisis, with infected individuals all over the country. The COVID-19 global pandemic produced extreme changes in human behavior that affected air quality. Human mobility and production activities decreased significantly, and many regions recorded significant reductions in air pollution. The goal of our investigation was to evaluate the impact of the COVID-19 lockdown on the concentrations of the main air pollutants in the urban area of Palermo (Italy). In this study, the trends in the average concentrations of CO, NO2, O3, and PM10 in the air from 1 January 2020 to 31 July 2020 were compared with the corresponding average values detected at the same monitoring stations in Palermo during the previous five years (2015–2019). During the lockdown period (10 March–30 April), we observed a decrease in the concentrations of CO, NO2, and particulate matter (PM)10, calculated to be about 51%, 50%, and 45%, respectively. This confirms that air pollution in an urban area is predominantly linked to vehicular traffic.

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“…(Muhammad et al 2020;ESA 2020b). Even in Wuhan City, China 30% reduction of NO 2 was also found in 2020 than 2019 (He et al 2020b). in Salé City, Morocco, the concentration of PM10, NO 2 and SO 2 were decreased respectively, by 75%, 96% and 49% within few days after implementation of COVID-19 lockdown (Otmani et al 2020).…”

Section: Discussionmentioning

confidence: 89%

“…PM10, NO 2 and SO 2 are very common ambient air pollutants in urban environments and caused severe health-related problems like respiratory and cardiovascular disorders, blood pressure and lung cancer (Koken et al, 2003;Le Tertre et al 2002). These pollutants arise from anthropogenic sources, including road tra c and industrial activities (Thorpe and Harrison 2008;He et al 2020b).…”

Section: Introductionmentioning

confidence: 99%

Impacts on Air Quality Index in the Industrial town of Asansol (West Bengal, India) due to COVID-19 lockdown

Ghosh¹

2020

Preprint

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The lockdown phase associated with COVID-19 pandemic initiated in full swing on and from 25th March, 2020 as preventive measures against the spreading of Corona virus. The objective of this study is to analyse the status of air quality of before and after lockdown in Asansol city which is second largest city of West Bengal, India and also known as “coal mining city”. Secondary data of five parameters like CO, SO2, NO2, PM2.5 and PM10 have been collected from Central Pollution Control Board, India. The result shows significant decrease of five parameters from 42.4 % (CO) to 63.4 % (NO2) due to close down of all industrial and transport activities during lockdown period. Based on different investigation a green belt development plan for this polluted city has been suggested for sustainable air quality management.

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On-road emission measurements of reactive nitrogen compounds from heavy-duty diesel trucks in China

Cited by 115 publications

References 23 publications

COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil

COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil

Impact on Air Quality of the COVID-19 Lockdown in the Urban Area of Palermo (Italy)

Impacts on Air Quality Index in the Industrial town of Asansol (West Bengal, India) due to COVID-19 lockdown

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