Temporal Analysis of Atmospheric Pollutant Concentrations with Specific Regard to NAAQS Compliance in an Industrial Cluster of New Delhi, India

IF 1 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION MAPAN Pub Date : 2023-10-04 DOI:10.1007/s12647-023-00688-0
Ajay Kumar Jha, Charu Jhamaria, Manish Yadav, Nitin Kumar Singh, Pawan Kumar Singh, Manish Kumar Jindal, Sunil Kumar Mishra, Suman Kumar
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Abstract

The present study focuses on determining the post COVID 19 status of air pollution and temporal variability of pollutants over the Okhla industrial area, New Delhi. The 24 hourly concentration datasets of PM10, PM2.5, NO2 and SO2, for the period of November 2021 to November 2022 were collected from continuous ambient air quality monitoring station of study area. During the study period, the concentration of PM10 and PM2.5 was observed to be varying from 9.73 to 640.14 µg/m3 and 6.18 to 448.06 µg/m3, respectively. The average values of PM10 and PM2.5 were recorded as 236.57 and 107.33 µg/m3, respectively; which were much higher than the standard values of Central Pollution Control Board. In case of gaseous pollutants, the mean value of SO2 was recorded as 9.31 µg/m3 which was much lesser as compared to the set standards. Contrary, the values for NO2 varied from 14.75 to 219.36 µg/m3 and these values were on the higher side when compared with standards. The Bivariate plots were also drawn to examine the role of wind speed and wind direction in the study area. The results revealed that at low wind speed, high concentrations were prevailing and potential sources of pollutant are in south east direction. Overall, the results of this study highlighted that situation is alarming after COVID 19, and need immediate intervention for the abatement of air pollution in studied region.

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对印度新德里工业集聚区大气污染物浓度的时间分析,特别关注 NAAQS 达标情况
本研究的重点是确定 COVID 19 后新德里奥克拉工业区的空气污染状况和污染物的时变性。从研究区域的连续环境空气质量监测站收集了 2021 年 11 月至 2022 年 11 月期间 PM10、PM2.5、二氧化氮和二氧化硫的 24 小时浓度数据集。在研究期间,PM10 和 PM2.5 的浓度分别为 9.73 至 640.14 微克/立方米和 6.18 至 448.06 微克/立方米。PM10 和 PM2.5 的平均值分别为 236.57 微克/立方米和 107.33 微克/立方米,远高于中央污染控制委员会的标准值。在气态污染物方面,二氧化硫的平均值为 9.31 微克/立方米,远低于既定标准。相反,二氧化氮的平均值为 14.75 至 219.36 微克/立方米,与标准值相比偏高。我们还绘制了双变量图,以研究风速和风向在研究区域中的作用。结果显示,在低风速时,污染物浓度较高,潜在的污染源在东南方向。总之,研究结果表明,COVID 19 后的情况令人担忧,需要立即采取干预措施,以减少研究区域的空气污染。
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来源期刊
MAPAN
MAPAN 工程技术-物理:应用
CiteScore
2.30
自引率
20.00%
发文量
91
审稿时长
3 months
期刊介绍: MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology. The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.
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