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Air pollutant concentrations

About: Air pollutant concentrations is a research topic. Over the lifetime, 1652 publications have been published within this topic receiving 36138 citations.


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04 May 2016

13 citations

Journal ArticleDOI
TL;DR: In this paper, the authors assessed the air quality in the Irish town of Monasterevin before and after the location was bypassed with a new national motorway (M7).
Abstract: Air quality (CO, NO, NO 2 , NO X , PM10 and C 2 –C 6 hydrocarbons) was assessed in the Irish town of Monasterevin, before and after the location was by-passed with a new national motorway (M7). Prior to the opening of the motorway, transport between the cities of Dublin and Cork was facilitated by the N7 which ran through Monasterevin, leading to frequent congestion. Weekday air quality improved in the town following the opening of the M7 by-pass, with a reduction in ambient concentrations observed for all compounds except ethane and propane. Slight decreases in average weekend concentrations were observed for CO, NO X , NO, and NO 2 .

12 citations

Journal ArticleDOI
TL;DR: In this article, the authors used the Industrial Source Complex Short Term (ISCST3) emission dispersion model to measure the ground level concentration of criteria air pollutants within 50 km radius of location.
Abstract: The dispersion models were used to estimate or predict the concentration of air pollutants or toxins emitted from sources such as industrial plants, vehicular traffic or accidental chemical releases. In this study, the Industrial Source Complex Short Term (ISCST3) emission dispersion model was used to measure the ground level concentration of criteria air pollutants within 50 km radius of location. This model considered emissions from major point sources of pollutants in four existing and twenty-three proposed Nigeria petroleum refineries. The obtained ground level concentration for 24-hr averaging periods of the criteria air pollutants at sensitive receptor around each of the refineries was compared with the National Ambient Air Quality Standards (NAAQS) of Nigeria, World Bank and World Health Organization (WHO) to determine their level of compliance. The highest ground level concentration predicted to be 450 - 1875 μg/m3 for 24-h averaging period was obtained at Tonwei Oil Refinery, Ekeremor Local Government, Bayelsa State, while the lowest ground level concentration predicted to be 0.0099 - 0.1 μg/m3 for 24-h averaging period was obtained at Amakpe International Refinery, Eket Local Government, Akwa Ibom State. Percentage set limits of criteria air pollutants ranging from 0.02% to 94.5% are within the set standard limits and no health risk is associated with areas around the plant’s locations while percentage set limits of criteria pollutants ranging from 1.1 to 55.6 folds of the standards exceed the maximum permitted limits, hence affecting areas around the plants. The air quality standards guiding petroleum refinery emissions must be strictly considered, in order to ensure that the ground level concentrations do not exceed the required standard limits and prevent the adverse effects of air pollution in the Nigeria airshed.

12 citations

Journal ArticleDOI
TL;DR: The potential adverse effects of concentrated animal feeding operations (CAFO) on the environment are a growing concern as discussed by the authors, and the air quality issues of most concern to CAFO vary but generally include ammonia, hydrogen sulfide, particulate matter, volatile organic compounds, greenhouse gases and odors.

12 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202316
20229
2021100
202084
201972
201852