Air pollution has a significant impact on tourism; however, research in this area is still limited. In study, we applied grey relational analysis to panel data from 31 provinces China and evaluated the relationship between air quality inbound tourist arrivals. The study focused provincial-level disparities for different key evaluation standards during 2009–2012 2013–2019. For instance, consider...

The rise in gaseous pollutants and particulate concentrations is a serious problem for the environment. This study examined air quality within four urban areas (Awka, Ekwulobia, Nnewi, Onitsha) Anambra State, Nigeria. of known including suspended matter (PM2.5 PM10), nitrogen dioxide (NO2), sulfur (SO2), methane (CH4), volatile organic compounds (VOCs), hydrogen sulfide (H2S), ammonia (NH3), oz...

The aim of this study was to determine the air quality index (AQI) and investigate its relationship with meteorological parameters in Mashhad for 2014. In study, moment concentrations pollutants 2014 were prepared amount AQI calculated determined. Then, data analysis performed using Kruskal-Wallis Mann-Whitney tests at a significant level 5% SPSSV.23 software. Finally, related during ARIMA time...

Air pollution in cities is a severe and worrying problem because it causes threats to economic development health. Furthermore, with the of industry technology, rapid population growth, massive expansion cities, total amount emissions continue increase. Hence, observing predicting air quality index (AQI), which measures fatal pollutants humans, has become more critical recent years. However, th...

In the whole world, most of air polluted cities were normalized during COVID-19 lockdown but after lockdown, pollution is continuously increasing day by day. present study, we assessed quality at selected sites Jaipur city from October 2020 to February 2021 quantify enhancement in pollution. The obtained data was processed using index (AQI), principal component analysis (PCA) and pearson correl...

This research aims to study the air pollution due fine Particulate Matter of radius less than 2.5µm (PM2.5) and Black Carbon concentration (BC) in samples. Aerosol PM2.5 samples were collected from rooftop National Oncology Center site Al-Zubairy area Sana’a Yemen. A Microprocessor Controlled Sampling device ISAP1050e (Gerhard Schulze Automation Engineering, Germany company) was used collect Th...

The low-cost sensors and IoT have come to the rescue due high cost operational complexity of equipment methodologies in environmental monitoring. They are relatively inexpensive reliable. It is on this assumption that we decided use World Air Quality satellite data supplied by air matters.com. This study a 40-day preliminary work which quality [Air Index (AQI), PM2.5, PM10, NO2, CO, SO2, O3] me...

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....