scholarly journals Assessing gaseous pollutants and air quality in some areas of Kano metropolis, Kano, Nigeria

2016 ◽  
Author(s):  
M. D. Garba ◽  
M. S. Yunusa
Keyword(s):  
Air Quality ◽  
Gaseous Pollutants

scholarly journals Regional Scale Impact of the COVID-19 Lockdown on Air Quality: Gaseous Pollutants in the Po Valley, Northern Italy

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 264 ◽  
Author(s):  
Giovanni Lonati ◽  
Federico Riva
Keyword(s):  
Air Quality ◽  
Urban Areas ◽  
Regional Scale ◽  
High Volume ◽  
Ambient Air ◽  
Northern Italy ◽  
Traffic Emissions ◽  
Gaseous Pollutants ◽  
Po Valley ◽  
Concentration Levels

The impact of the reduced atmospheric emissions due to the COVID-19 lockdown on ambient air quality in the Po Valley of Northern Italy was assessed for gaseous pollutants (NO2, benzene, ammonia) based on data collected at the monitoring stations distributed all over the area. Concentration data for each month of the first semester of 2020 were compared with those of the previous six years, on monthly, daily, and hourly bases, so that pre, during, and post-lockdown conditions of air quality could be separately analyzed. The results show that, as in many other areas worldwide, the Po Valley experienced better air quality during 2020 spring months for NO2 and benzene. In agreement with the reductions of nitrogen oxides and benzene emissions from road traffic, estimated to be −35% compared to the regional average, the monthly mean concentration levels for 2020 showed reductions in the −40% to −35% range compared with the previous years, but with higher reductions, close to −50%, at high-volume-traffic sites in urban areas. Conversely, NH3 ambient concentration levels, almost entirely due the emissions of the agricultural sector, did not show any relevant change, even at high-volume-traffic sites in urban areas. These results point out the important role of traffic emissions in NO2 and benzene ambient levels in the Po Valley, and confirm that this region is a rather homogeneous air basin with urban area hot-spots, the contributions of which add up to a relatively high regional background concentration level. Additionally, the relatively slow response of the air quality levels to the sudden decrease of the emissions due to the lockdown shows that this region is characterized by a weak exchange of the air masses that favors both the build-up of atmospheric pollutants and the development of secondary formation processes. Thus, air quality control strategies should aim for structural interventions intended to reduce traffic emissions at the regional scale and not only in the largest urban areas.

Ambient Air Quality Monitoring Studies in Four Specific Location of Tamilnadu, India

2019 ◽  
pp. 677-683
Author(s):  
Mageshkumar P ◽  
Ramesh S ◽  
Angu Senthil K
Keyword(s):  
Air Quality ◽  
Quality Index ◽  
High Volume ◽  
Ambient Air ◽  
Quality Parameters ◽  
Air Quality Index ◽  
Gaseous Pollutants ◽  
Ambient Air Quality ◽  
Air Sampler

A comprehensive study on the air quality was carried out in four locations namely, Tiruchengode Bus Stand, K.S.R College Campus, Pallipalayam Bus Stop and Erode Government Hospital to assess the prevailing quality of air. Ambient air sampling was carried out in four locations using a high volume air sampler and the mass concentrations of PM10, PM2.5, SO2, NOX and CO were measured. The analyzed quality parameters were compared with the values suggested by National Ambient Air Quality Standards (NAAQS). Air quality index was also calculated for the gaseous pollutants and for Particulate Matters. It was found that PM10 concentration exceeds the threshold limits in all the measured locations. The higher vehicular density is one of the main reasons for the higher concentrations of these gaseous pollutants. The air quality index results show that the selected locations come under moderate air pollution.

Metal–organic frameworks (MOFs): potential and challenges for capture and abatement of ammonia

2017 ◽  
Vol 5 (44) ◽  
pp. 22877-22896 ◽  
Author(s):  
Kumar Vikrant ◽  
Vanish Kumar ◽  
Ki-Hyun Kim ◽  
Deepak Kukkar
Keyword(s):  
Air Quality ◽  
Metal Organic Frameworks ◽  
Catalytic Degradation ◽  
Gaseous Pollutants ◽  
Metal Organic

Metal–organic frameworks (MOFs) have potential as air quality treatment media for various gaseous pollutants (e.g., ammonia) through diverse mechanisms (capture and catalytic degradation).

Relating Vehicle Emission Regulations to Air Quality

1988 ◽  
Vol 202 (4) ◽  
pp. 235-242
Author(s):  
M L Williams
Keyword(s):  
Carbon Monoxide ◽  
Air Quality ◽  
Motor Vehicles ◽  
Vehicle Emission ◽  
Gaseous Pollutants ◽  
Oxides Of Nitrogen ◽  
Emission Regulations ◽  
European Regulations ◽  
Emission Limits ◽  
The Relationship

The European regulations governing the emissions of gaseous pollutants from gasoline-engined motor vehicles is reviewed and discussed, including the so-called ‘Luxembourg Agreement’. The relationship between the regulation emission limits and those measured in practice from ‘as-received’ vehicles in use is also discussed. Having discussed the relationship between regulations and emissions, the further relationships between vehicle emissions and air quality are also discussed, giving particular attention to carbon monoxide, oxides of nitrogen and lead.

scholarly journals CHARACTERIZATION OF VOLATILE ORGANIC COMPOUNDS AND ODOUR POLLUTION IN ATMOSPHERE AT OIL AND GASOLINE HANDLING AND PROCESSING IMPACT ZONE

2019 ◽  
Vol 1 ◽  
pp. 171
Author(s):  
Evita Muizniece-Treija ◽  
Iveta Šteinberga
Keyword(s):  
Air Quality ◽  
Human Health ◽  
Well Being ◽  
Pollution Level ◽  
Gaseous Pollutants ◽  
Monitoring Site ◽  
Short Term ◽  
Limit Values ◽  
Private Monitoring ◽  
Pollution Levels

Air quality pollution problem is still one of the crucial points for citizens in Europe for already receiving increasing attention, particularly because of the major European cities 10 and more years. Although the EU's long-term goal is to achieve levels of air quality that do not impact and risks to human health and the environment, many of member states still didn`t reach stated goals. Additionally, to gaseous pollutants, recently specific type of pollution, - odour, seems to become more important. Usually in order to determine pollution levels, national, municipal and private monitoring equipment is used. For this research municipal monitoring site in Riga (Latvia), at Milgravja Street 10, controlling gaseous pollutants (SO2, O3, BTX, PM10) and airborne particulate matter, and private monitoring results from Riga, Milgravja Street 16, where odour pollution was obtained, are analysed. Distance between both stations are just 500 m. Measurements at municipal monitoring site is obtained by DOAS and gravimetric sampling, while at Milgravja 16 by photoionization method or so-called “electronic nose”. Monitoring results in municipal station show that in 2017 the average benzene concentration was 4,87 ug/m3, toluene – 8,89 ug /m3 and xylene – 5,07 ug/m3, while the odour pollution level does not exceed 5 odour units. In general estimation of pollution averaged annually do not show and explain variability of pollution levels. It`s well known that high BTX and odour pollution episodes occur in shorter periods, thus short term limit values would be useful in order to characterize short term effects on human health and well-being.

Monitoring of the Inorganic Pollutants in Built Indoor Environment

2017 ◽  
Vol 68 (1) ◽  
pp. 85-89
Author(s):  
Vasilica Vasile ◽  
Alina Dima ◽  
Mihaela Ion
Keyword(s):  
Nitric Oxide ◽  
Air Quality ◽  
Sulfur Dioxide ◽  
Real Time ◽  
Urban Area ◽  
Indoor Air ◽  
Indoor Environment ◽  
Gaseous Pollutants ◽  
Inorganic Pollutants

The paper presents the results of the monitoring of the inorganic gaseous pollutants such as nitric oxide (NO), sulfur dioxide (SO2), ozone (O3), carbon oxides (CO, CO2), from indoor air of four office spaces, located in urban area of Bucharest � Romania, by using the equipment that detected and recorded, in real time, the concentrations of the compounds. The study aimed to obtain useful information on air quality from office spaces, and for the awareness of acute necessity for action to improve the quality of the indoor environment in which we live and work.

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