This article discussed air quality changes in the Beijing-Tianjin-Tangshan (BTT) region. The index (AQI) values, and concentrations of PM2.5, PM10, SO2, CO, NO2, O3 BTT region during COVID-19 outbreak 2020 were, respectively, 79.4, 47.2 ?g m-3, 73.4 10.3 0.87 mg 33.6 90.7 m-3. However, they 102.7, 61.4 121.0 9.0 0.88 40.1 84.0 m-3 same period 2021, which is an increase 29.2%, 30.1%, 64.8%, -12....

This paper formalizes the model of choosing a strategy for reducing air pollution in an urban environment. The involves determining optimal location biotechnological systems – filter or smart purification devices based on solving problem discrete optimization, taking into consideration forecast quality index. Two subtasks have been formalized, which make it possible to form pollution. To solve ...

The current pandemic highlights the significance and impact of air pollution on individuals. When it comes to climate sustainability, is a major challenge. Because distinctive nature, unpredictability, great changeability in reality toxins particulates, detecting quality puzzling task. Simultaneously, ability predict or classify monitor becoming increasingly important, particularly urban areas,...

Abstract: The rapid urbanization, different construction works and deforestation recently increased in some famous historical, cultural religious cities Uttar Pradesh due to higher population pressure. Thousands of pilgrims visit these every year by motor other vehicles. vehicle exhaust also plays a vital role enhance the toxic gases aerosol environment. Many particles, molecules, gasses, chemi...

Introduction: The rapid urbanization coupled with industrial development in Indian cities has led to air pollution that causes adverse effects on the health of human beings. So, it is crucial to track the quality of air in industrial areas of a city to insulate the public from harmful air pollutants.  The present study examined and predicted air quality index levels in industrial areas located ...

The lockdowns from the coronavirus disease of 2019 (COVID-19) have led to a reduction in anthropogenic activities and hence reduced primary air pollutant emissions, which were reported helped quality improvements. However, expressed by index (AQI) did not improve Shanghai, China, during COVID-19 outbreak spring 2022. To better understand reason, we investigated variations nitrogen dioxide (NO2)...

Taking Jiaozuo agglomeration area as the research area, environmental quality evaluation was carried out. The monthly and annual variation characteristics of 6 basic pollutants 3 supplementary monitoring were analyzed by single factor index ambient air ( AQI ). results showed that value average concentration in 2019-2021 reached secondary standard. Compared with 2019 2020, pollution decreased y...

BACKGROUND The elevation and dissipation of pollutants after the ignition of fireworks in different functional areas of a valley city were investigated. METHODS The Air Quality Index (AQI) as well as inter-day and intra-day concentrations of various air pollutants (PM10, PM2.5, SO2, NO2, CO, O3) were measured during two episodes that took place during Chinese New Year festivities. RESULTS F...

BACKGROUND Although particulate matter, with diameters < 2.5 µm (PM2.5) and < 10 µm (PM10), and other pollutants have been associated with cardiovascular morbidity and mortality, the effect of pollutants on acute myocardial infarctions (AMIs) has rarely been investigated in Asia, especially in Shanghai, China. METHODS Between 1 November 2013 and 27 April 2014, 972 patients from the Pudong Dis...