CSIR-NEERI Delhi Zonal Centre, A-93/94, Naraina Industrial Area Phase-I, New Delhi, 110028, India.
CSIR-NEERI, Nehru Marg, Nagpur, 440020, India.
Environ Sci Pollut Res Int. 2019 Oct;26(30):30967-30979. doi: 10.1007/s11356-019-06236-1. Epub 2019 Aug 26.
Government has implemented various scattered and un-quantified control actions in Delhi city to reduce the air pollution levels; however, it still exceeds the National Ambient Air Quality Standards (NAAQS). The present study has been designed to assess the air quality status, identify Air Quality Control Region (AQCR), and evaluate control strategies in the city. Out of eight selected locations, ambient PM, PM, and NO concentrations were found exceeding the daily as well as annual standards at selected AQCR with peak levels during post-monsoon than winter and summer. Anand Vihar was found to be most polluted and thus, selected as an AQCR. AERMOD performed satisfactorily in predicting pollutant concentration during winter and summer having an index of agreement in the range 0.54-0.80. PM and PM can be reduced substantially by increasing frequency of efficient mechanized cleaning of roads and sprinkling of water on the roads. Progressive decrease in NO concentrations can be achieved by restricting entry of truck in the study area through alternate path. The cumulative impact of all selected control strategies indicates a substantial decrease in air pollution within AQCR. The study also suggests a policy framework to manage the urban air quality through local scale air quality guidelines.
政府在德里市实施了各种分散且未量化的控制措施，以降低空气污染水平；然而，其空气质量仍超过国家环境空气质量标准（NAAQS）。本研究旨在评估城市的空气质量状况、确定空气质量控制区（AQCR）并评估控制策略。在八个选定的地点中，选定的 AQCR 中的环境 PM、PM 和 NO 浓度在冬季和夏季的峰值期间均超过了每日和年度标准。安纳德维哈尔被认为是污染最严重的地区，因此被选为 AQCR。AERMOD 在预测冬季和夏季的污染物浓度时表现良好，其一致性指数在 0.54-0.80 之间。通过增加道路高效机械化清洁的频率和在道路上洒水，可以大幅减少 PM 和 PM。通过限制卡车通过替代路径进入研究区域，可以逐步降低 NO 浓度。所有选定控制策略的累积影响表明，AQCR 内的空气污染有显著降低。该研究还提出了一个政策框架，通过地方空气质量标准来管理城市空气质量。
