Impact of Lockdown on Air Pollutants during COVID-19 at Patna, India

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2021-12-01 DOI:10.5572/ajae.2021.045

Mohammed Aasif Sulaiman, Mohammad Masroor Zafar, Nishat Afshan, Anupma Kumari

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Abstract

Many countries shut their borders, imposed nationwide lockdown, and restricted several anthropogenic activities to arrest the spread of COVID-19. In the present study, the concentration of several air pollutants(PM₁₀, PM_2.5, NO₂, NH₃, SO₂, CO and O₃) during different phases of lockdown from monitoring stations of Patna was analyzed to assess the effect of lockdown restriction on air quality. Reduction in PM_2.5, NH₃, NO₂, PM₁₀ and CO concentration was observed by 59.79%, 58.2%, 49.49%, 39.57% and 24.04%, respectively during the lockdown period. National Air Quality Index(NAQI) value in the year 2020 had been observed to lower by 57.88% compared to the year 2019, during the same period. A more significant fall in the concentration of air pollutants was observed during the early phase of post-lockdown compared to the late stages of post-lockdown. The study reflects the significance of restriction on anthropogenic activities in improving air quality and provides clues for future action plans for improving air quality.

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印度巴特那 COVID-19 期间封锁对空气污染物的影响

许多国家关闭了边境，在全国范围内实施封锁，并限制多项人为活动，以阻止 COVID-19 的扩散。本研究分析了巴特那监测站在不同封锁阶段的几种空气污染物（PM10、PM2.5、二氧化氮、氮氧化物、二氧化硫、一氧化碳和臭氧）的浓度，以评估封锁限制对空气质量的影响。在封锁期间，PM2.5、NH3、NO2、PM10 和 CO 的浓度分别下降了 59.79%、58.2%、49.49%、39.57% 和 24.04%。与 2019 年相比，2020 年的国家空气质量指数（NAQI）值同期下降了 57.88%。与关闭后的后期阶段相比，关闭后的早期阶段空气污染物浓度下降更为明显。这项研究反映了限制人为活动对改善空气质量的重要意义，并为未来改善空气质量的行动计划提供了线索。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.