A novel coronavirus has affected almost all countries and impacted the economy, environment, and social life. The short-term impact on the environment and human health needs attention to correlate the Volatile organic compounds (VOCs) and health assessment for pre-, during, and post lockdowns. Therefore, the current study demonstrates VOC changes and their effect on air quality during the lockdown. The findings of result, the levels of the mean for total VOC concentrations were found to be 15.45 ± 21.07, 2.48 ± 1.61, 19.25 ± 28.91 µg/m³ for all monitoring stations for pre-, during, and post lockdown periods. The highest value of TVOCs was observed at Thane, considered an industrial region (petroleum refinery), and the lowest at Bandra, which was considered a residential region, respectively. The VOC levels drastically decreased by 52%, 89%, 80%, and 97% for benzene, toluene, ethylbenzene, and m-xylene, respectively, during the lockdown period compared to the previous year. In the present study, the T/B ratio was found lower in the lockdown period as compared to the pre-lockdown period. This can be attributed to the complete closure of non-traffic sources such as industries and factories during the lockdown. The Lifetime Cancer Risk values for all monitoring stations for benzene for pre-and-post lockdown periods were higher than the prescribed value, except during the lockdown period.

一种新型冠状病毒已经影响到几乎所有国家，对经济、环境和社会生活造成冲击。需要注意对环境和人类健康的短期影响，以便将挥发性有机化合物 (VOC) 与封锁前、封锁期间和封锁后的健康评估相关联。因此，当前的研究证明了 VOC 的变化及其在封锁期间对空气质量的影响。结果发现，总 VOC 浓度的平均值水平为 15.45 ± 21.07、2.48 ± 1.61、19.25 ± 28.91 µg/m ³适用于封锁前、封锁期间和封锁后的所有监测站。在被认为是工业区（炼油厂）的 Thane 观察到 TVOC 的最高值，在被认为是住宅区的 Bandra 观察到最低值。与上一年相比，在封锁期间，苯、甲苯、乙苯和间二甲苯的 VOC 水平分别大幅下降了 52%、89%、80% 和 97%。在本研究中，与锁定前相比，锁定期间的 T/B 比率较低。这可以归因于封锁期间工业和工厂等非交通来源的完全关闭。封锁前后所有苯监测站的终生癌症风险值均高于规定值，